185 jobs found

About the role As a backend development Engineer, you'll be working in an agile team of industry leading engineers to define and develop Tesco's xAPI (Experience API) that powers Tesco's various shopping experiences i.e., the mobile shop application, store and other internal facing applications. You'll be a passionate, pragmatic Engineer with an inquisitive mind who is motivated to make change for the better and most importantly put our customer first. You'll enjoy working as part of a team, liaise with product and program managers to understand requirements and build new software or extend existing software. You are a keen problem solver with the expertise and experience building extensible, maintainable, highly available, scalable, performant and observable quality software, comfortable with modern engineering practices and backend development technologies. You'll use innovation to improve the customer experience and efficiency of engineering teams. The solutions that you will be responsible for will have a global reach, impacting millions of customers. Some of the tech we are using at scale: Javascript, Typescript, Node.JS, GraphQL, REST, Kafka, Azure Cloud, Redis, Varnish Cache, Apollo Federation, Docker, Kubernetes etc. About the team Tesco's xAPI (Experience API) powers Tesco's online shopping, enabling customers to discover and shop online from diverse client applications & devices i.e. web, mobile-apps, tills in-store, scan as you shop, tablets, voice assistants etc. We, the xAPI team, build products that provide the experience APIs (GraphQL) for building client applications and handle all the device traffic to support the user experience for the end user's shopping lifecycle from product discovery to purchase to returns and refunds, shopping history. We build, develop and maintain massive scale, highly performant REST/GraphQL API services, backend for frontend services that enable ease of client application development and our success is the difference between millions of happy customers or millions of missed opportunities. We are building systems to solve real world problems at scale, impacting tens of millions of customers. Teams of great Engineers (and Managers and Product Managers) to learn from. We are agile and enlightened in our approach to building software and teams. There's a great atmosphere and we work sustainably as a team. Tesco has a "do the right thing" mentality. We promote flexible working. Job Responsibilities Use your in depth knowledge of JavaScript, TypeScript, Node.JS, cloud and the backend services ecosystem to develop and deploy scalable backend systems. Work with product managers to understand business/product requirements. Translate requirements into tasks & code. Commit code early and often, demonstrating understanding of version control & branching strategies. Automate everything by default. Write secure code by default. Write maintainable code and observe basic hygiene practices. Implement relevant project instrumentation. Profile and optimise code. Apply understanding of cohesion and the SOLID principles to create well structured, maintainable software. Identify patterns in code and refactor the code towards them where it increases understanding and/or maintainability with minimal guidance. Produce test driven features in a specific programming language and demonstrate familiarity with TDD. Follow the best practices of continuous BDD/TDD/Performance/Security/Smoke testing. Work effectively with product stakeholders to communicate and translate needs into product improvements. Lead group discussions on system design and understand domain well enough to work with Product Managers to drive value. Support production systems, resolve incidents and perform root cause analysis. Debug/find complex problems and support/maintain the software solution. Share knowledge with the wider engineering community. Mentor and develop others around you. Produce proof of concepts to evaluate new tools. You will need We are looking for people who have a passion for Technology. You will demonstrate experience of different platforms and technologies. We expect to see some or all of the following: 7+ Years professional experience as a Backend Software Developer. At least 4 years of experience in backend development using JavaScript, TypeScript, Node.JS and related backend technologies, frameworks. Exposure to a variety of JavaScript frameworks and libraries such as Next.JS, React.JS and testing using Jest, Mocha.JS, Cucumber etc. Experience of using Node.js to create high traffic applications using Express.js, Sails, Koa or similar. Knowledge of microservices development and deployment in the cloud i.e. Azure/AWS/GCP cloud. Knowledge of virtualization, containerization and container orchestration technologies like Docker, Kubernetes etc. Experience with usage of GraphQL, building GraphQL servers and GraphQL Federation technologies like Apollo Federation. Experience with using and building REST API services. Knowledge of distributed messaging systems like Kafka, RabbitMQ etc. Knowledge of distributed caching technologies like Redis. A desire to write readable, maintainable, modular and extendable code. Exposure to the DevOps model. Experience in Lean and Agile environments and understanding of principles behind methodologies such as BDD, ATDD and TDD.

About the role As a backend development Engineer, you'll be working in an agile team of industry leading engineers to define and develop Tesco's xAPI (Experience API) that powers Tesco's various shopping experiences i.e., the mobile shop application, store and other internal facing applications. You'll be a passionate, pragmatic Engineer with an inquisitive mind who is motivated to make change for the better and most importantly put our customer first. You'll enjoy working as part of a team, liaise with product and program managers to understand requirements and build new software or extend existing software. You are a keen problem solver with the expertise and experience building extensible, maintainable, highly available, scalable, performant and observable quality software, comfortable with modern engineering practices and backend development technologies. You'll use innovation to improve the customer experience and efficiency of engineering teams. The solutions that you will be responsible for will have a global reach, impacting millions of customers. Some of the tech we are using at scale: Javascript, Typescript, Node.JS, GraphQL, REST, Kafka, Azure Cloud, Redis, Varnish Cache, Apollo Federation, Docker, Kubernetes etc. About the team Tesco's xAPI (Experience API) powers Tesco's online shopping, enabling customers to discover and shop online from diverse client applications & devices i.e. web, mobile-apps, tills in-store, scan as you shop, tablets, voice assistants etc. We, the xAPI team, build products that provide the experience APIs (GraphQL) for building client applications and handle all the device traffic to support the user experience for the end user's shopping lifecycle from product discovery to purchase to returns and refunds, shopping history. We build, develop and maintain massive scale, highly performant REST/GraphQL API services, backend for frontend services that enable ease of client application development and our success is the difference between millions of happy customers or millions of missed opportunities. We are building systems to solve real world problems at scale, impacting tens of millions of customers. Teams of great Engineers (and Managers and Product Managers) to learn from. We are agile and enlightened in our approach to building software and teams. There's a great atmosphere and we work sustainably as a team. Tesco has a "do the right thing" mentality. We promote flexible working. Job Responsibilities Use your in depth knowledge of JavaScript, TypeScript, Node.JS, cloud and the backend services ecosystem to develop and deploy scalable backend systems. Work with product managers to understand business/product requirements. Translate requirements into tasks & code. Commit code early and often, demonstrating understanding of version control & branching strategies. Automate everything by default. Write secure code by default. Write maintainable code and observe basic hygiene practices. Implement relevant project instrumentation. Profile and optimise code. Apply understanding of cohesion and the SOLID principles to create well structured, maintainable software. Identify patterns in code and refactor the code towards them where it increases understanding and/or maintainability with minimal guidance. Produce test driven features in a specific programming language and demonstrate familiarity with TDD. Follow the best practices of continuous BDD/TDD/Performance/Security/Smoke testing. Work effectively with product stakeholders to communicate and translate needs into product improvements. Lead group discussions on system design and understand domain well enough to work with Product Managers to drive value. Support production systems, resolve incidents and perform root cause analysis. Debug/find complex problems and support/maintain the software solution. Share knowledge with the wider engineering community. Mentor and develop others around you. Produce proof of concepts to evaluate new tools. You will need We are looking for people who have a passion for Technology. You will demonstrate experience of different platforms and technologies. We expect to see some or all of the following: 7+ Years professional experience as a Backend Software Developer. At least 4 years of experience in backend development using JavaScript, TypeScript, Node.JS and related backend technologies, frameworks. Exposure to a variety of JavaScript frameworks and libraries such as Next.JS, React.JS and testing using Jest, Mocha.JS, Cucumber etc. Experience of using Node.js to create high traffic applications using Express.js, Sails, Koa or similar. Knowledge of microservices development and deployment in the cloud i.e. Azure/AWS/GCP cloud. Knowledge of virtualization, containerization and container orchestration technologies like Docker, Kubernetes etc. Experience with usage of GraphQL, building GraphQL servers and GraphQL Federation technologies like Apollo Federation. Experience with using and building REST API services. Knowledge of distributed messaging systems like Kafka, RabbitMQ etc. Knowledge of distributed caching technologies like Redis. A desire to write readable, maintainable, modular and extendable code. Exposure to the DevOps model. Experience in Lean and Agile environments and understanding of principles behind methodologies such as BDD, ATDD and TDD.

Senior Full Stack Developer Application Deadline: 31 May 2026 Department: Data & Technology Employment Type: Permanent Location: Cheadle Reporting To: Chandradeep Tiwari Compensation: £70,000 - £75,000 / year Description Help build the world's first automated "airlock" for health research environments. At UK Biobank, we're developing new technologies that will help researchers securely work with some of the world's richest biomedical datasets. This role sits within a team building what is believed to be the world's first automated output checking system for trusted research environments using AI and cloud-native technologies to help ensure researchers can only export files regarded as safe. It's a genuinely greenfield engineering challenge, combining AI-driven approaches, secure cloud-native architecture, and modern full-stack development to support global health research. Can you do it? You'll play a leading role in the development, integration, and delivery of UK Biobank's Automated Output Checking System, helping shape a platform that supports secure research at a global scale. Working closely with architects, researchers, vendors, and internal engineering teams, you'll help design and build scalable integrations across research platforms and cloud-native services. This role combines hands on engineering, technical leadership, and modern platform design, requiring someone who can work confidently across backend services, frontend applications, infrastructure, APIs, and cloud environments. The solution applies AI techniques, follows cloud-native principles, and is being built from the ground up giving you the opportunity to influence both architecture and technical direction. Responsibilities You will be responsible for: Ensuring integration patterns align with enterprise architecture principles, including event driven, API first, and microservices based approaches. Designing and developing scalable, secure, cost efficient and maintainable full stack applications using Python (backend) and TypeScript (frontend), including relational and non relational database management systems on AWS. Developing responsive and accessible user interfaces using modern frontend frameworks (e.g., React with TypeScript). Developing and managing infrastructure using Infrastructure as Code (Terraform), ensuring reproducible and auditable environments; develop CI/CD pipelines to enable continuous integration, testing, and deployment. Ensuring systems are designed with observability, logging, and monitoring to support operational excellence. Qualifications To be successful, you will have experience in: Full stack software development within enterprise environments. Backend development using Python frameworks such as FastAPI, Flask, or similar. Frontend development experience using TypeScript and modern frameworks such as React or Vue. AWS services (e.g., IAM, S3, Lambda, ECS/EKS, API Gateway, Step Functions). Microservices architecture and distributed systems. Designing and consuming secure APIs with CI/CD pipelines and DevOps tooling. Working hours are 35 hours per week, Monday to Friday, with some flexibility, 2 days onsite with hybrid working available. Located in Greater Manchester (initially based in Stockport with a move to Manchester Science Park mid to late 2026). Our passion for diversity and equality means creating a work environment for all employees that is welcoming, respectful, engaging, and enriched with opportunities for personal and professional development. We actively welcome applications from people with disabilities, long term health conditions, neurodivergent candidates, and those with diverse thinking styles. We are committed to making reasonable adjustments throughout our recruitment process and in the workplace so that everyone can perform at their best. If you require any adjustments during the recruitment process, please contact Tommy Wilson so we can support you. Your Wellbeing Matters to Us Our wellbeing score on Indeed is rated as 77% (High), reflecting how people experience working here day to day. Colleagues often highlight a strong sense of purpose, supportive team culture, and the opportunity to grow. There's a real focus on learning, flexibility, and feeling valued, whether that's developing new skills, contributing ideas, or building a career within Data & Technology. Benefits 26 Days' Annual Leave - Plus Bank Holidays Holiday Buy Scheme Birthday Leave USS Pension Scheme Healthcare Cash Plan Enhanced Family Leave Cycle to Work Scheme Season Ticket Loan Professional Subscriptions £500 annual training budget Free On Site Gym Subsidised Canteen Lunches Free Car Parking Employee Discounts Portal Employee Assistance Programme Annual Flu Vaccination Life Assurance Cover

About the Role We are seeking a Principal Software Engineer based in London to provide technical leadership across backend services supporting our global payment gateway system. You will design and evolve core platform capabilities, guide architectural decisions across microservices, and mentor engineers while remaining hands on with critical systems built using Java and Spring Boot. This role sits at the heart of Verifone's global payment gateway platform. You will help shape the technical direction of systems responsible for processing high volume, mission critical financial transactions worldwide. At this level, the role goes beyond feature delivery. You will drive architectural decisions, set engineering standards, and influence how teams design, build, and operate secure, scalable backend systems. Success in this role is defined by technical leadership, sound judgment in complex trade offs, and ownership of systems that must perform reliably under real world load and regulatory constraints. You will work closely with senior engineering, platform, product, and infrastructure partners to ensure our systems scale globally, remain secure, and meet the highest standards for availability and performance. Required Skills and Experience Needed Programming Languages Java 17 or higher Frameworks and Libraries Spring Boot Spring Web (REST APIs) Spring Data Spring Security with JWT / OAuth2 Architecture & System Design Deep experience designing and operating microservice based architectures Strong application of clean code practices and SOLID principles Ownership of system level architecture and cross service design decisions Strong understanding of security, authentication flows, and data protection in distributed systems API & Data Design and governance of RESTful APIs, JSON, and HTTP standards API versioning and backward compatibility strategies MongoDB / NoSQL expertise, including: Data modeling Indexing strategies Performance optimization Advanced experience with Java concurrency, streams, and performance tuning Cloud & Infrastructure AWS services including EC2, ECS/EKS, S3, RDS and/or DynamoDB, and CloudWatch Docker and containerized deployments CI/CD pipelines and Git based workflows Experience designing systems for scalability, resilience, and operability Testing & Engineering Practices Strong unit and integration testing practices using JUnit and Mockito Ownership of quality standards, testability, and CI discipline Experience working in Agile / Scrum environments and influencing engineering best practices Experience Level Principal level backend engineering experience building and operating large scale, high performance systems Approximately 8+ years of backend development experience, with several years working on production Java and Spring Boot services Proven experience owning architecture and technical direction for critical backend platforms Extensive production experience with MongoDB, including modeling, indexing, and performance optimization Bonus Skills and Experience Payments & Domain Expertise Background in fintech or payments Experience with payment processing, transactions, and financial data Strong understanding of high availability, security, and data consistency trade offs Eventing & Distributed Systems Experience with event driven architectures Messaging or streaming technologies such as: Kafka AWS SQS Similar eventing systems Platform & Technical Leadership Deep experience with AWS, Docker, and CI/CD practices Proven ability to mentor engineers and raise the technical bar across teams Strong sense of ownership for systems running in production Our Commitment Verifone is committed to creating a diverse environment and is proud to be an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. Verifone is also committed to compliance with all fair employment practices regarding citizenship and immigration status.

Your Mission As a Senior Software Engineer at the company, you will play a crucial role in shaping the future of the company's technology, driving innovation, and ensuring we deliver a seamless, high-performance experience for our merchants across Europe. You will work with diverse, cross functional teams to design, develop, and maintain core components of our systems that power various aspects of our business, from payments processing and core banking to merchant lifecycle management and internal operations. Your contributions will directly impact our merchants' success, enabling them to thrive in an increasingly competitive landscape. As a Senior Software Engineer at the company, you will be expected to: Design, develop, and maintain clean, efficient, secure, and well tested code to support critical business needs, ensuring scalability, performance, and reliability across the company's systems. Take ownership of features and projects throughout the full software development lifecycle, including scoping, design, development, testing, deployment, and maintenance. Collaborate closely with cross functional teams (including product, design, data science, security, and operations) to understand requirements, provide technical insights, and contribute to architecture discussions. Build tools and integrate systems to enhance operational efficiency, reliability, and scalability of products across the business. Contribute to process improvements, focusing on continuous integration, delivery, and deployment to ensure a smooth and stable development pipeline. Participate in code reviews, share feedback constructively, and help elevate the overall quality and performance of the team's output. Mentor and support fellow developers, fostering a collaborative and innovative environment. Stay updated with the latest trends and technologies in software engineering, payments, and fintech, proactively identifying opportunities for improvement and innovation. Assist in troubleshooting complex issues related to our systems, providing timely resolutions to ensure uninterrupted service for our customers. Help define and promote best practices in software development, including code quality, testing, automation, and security. Serve as a subject matter expert in key areas, providing guidance and support to other teams. Requirements 5+ years of professional software development experience, with a solid understanding of backend systems, scalable architectures, and software design principles. Expertise in Java (17+), Spring Boot, and modern backend engineering practices. Experience with system design and architecture, including object oriented design patterns, microservices architecture, and API development. Experience building systems for high throughput, low latency, and reliability. Experience in data structures and performance trade offs. Excellent communication skills with the ability to influence and align stakeholders. Strong problem solving skills and the ability to debug complex issues across multiple systems or services. Experience working in an Agile/Scrum development process. Ability to work well as part of a team and independently in a fast paced environment. Nice to have Degree in computer science, engineering, or a related field. Previous experience in the Payments Industry, fintech, or Location and Business Recommendation Services platforms. Experience with cloud infrastructure (AWS, Kubernetes, Helm). Experience with current or specific frameworks, SDKs, APIs, and libraries relevant to the company's technology stack (e.g. Laravel, Spring, Reactor). Familiarity with authorization systems (e.g., RBAC, ABAC, SpiceDB). Experience with Behavior Driven Development (BDD) or Test Driven Development (TDD). Experience with CI/CD pipelines. The Perks Flexible working hours that suit both you and your team. Health Insurance. Physical and mental health support through our partnership with MyFitness. 25 days of Annual leave (+ Bank Holidays). Possibility to visit other company offices to meet colleagues when travel is safe and appropriate. Friday lunch in the office. Friendly, comfortable, and high end work equipment and informal office environment. Hybrid work mode policy. Equal Opportunity Employer We are committed to creating an inclusive environment where everyone, regardless of race, ethnicity, gender identity or expression, sexual orientation, age, disability, religion, or background, can thrive and do their best work. We believe that a diverse team leads to better ideas, stronger outcomes, and a more supportive workplace for all. If you require any reasonable adjustments at any stage of the recruitment process-whether for interviews, assessments, or other parts of the application-we encourage you to let us know. We are committed to ensuring that every candidate has a fair and accessible experience with us.

Principal Full Stack Engineer & Architecture Lead Canary Wharf, London - Hybrid 2-3 days per week - £80,000 - £90,000 + benefits The company Recruitment is proud to be partnering with an ambitious and rapidly growing healthcare company that is transforming access to specialist healthcare services across the UK. This is a fantastic opportunity for an experienced Principal Engineer or Technical Architecture Lead to play a key role in shaping a modern, cloud native healthcare platform that is making a genuine impact on people's lives. Our client is building one of the UK's most innovative healthcare service platforms and is seeking a hands on technical leader who can combine strategic architecture with strong full stack engineering expertise. The Opportunity As Principal Full Stack Engineer & Architecture Lead, you will take ownership of platform architecture, engineering standards, cloud infrastructure, and technical delivery across the business. You'll work closely with senior leadership, including the CTO, Director of Engineering, Product teams, and Data teams, to drive scalability, resilience, performance, and engineering excellence while remaining hands on with development. This role would suit someone who enjoys solving complex technical challenges, mentoring engineers, and building modern distributed systems within a fast moving product led environment. Key Responsibilities Architecture & Technical Leadership Lead platform architecture and technical design decisions Define scalable, secure, and maintainable engineering standards Provide technical leadership across frontend, backend, APIs, infrastructure, and integrations Drive platform scalability, resilience, observability, and performance Partner with leadership teams to align technical strategy with business goals Act as the senior technical authority for complex engineering decisions Hands On Engineering Contribute directly to backend and frontend production code Build scalable applications using Node.js, TypeScript, React, and Next.js Design and develop AWS serverless and event driven systems Develop and optimise PostgreSQL databases and queries Support engineering teams with delivery of complex technical initiatives Cloud, DevOps & Infrastructure Design and maintain CI/CD pipelines and deployment automation Build Infrastructure as Code using Terraform or AWS CDK Improve engineering workflows, release processes, and platform reliability Implement best practices across monitoring, logging, security, testing, and resilience Ensure systems remain secure, scalable, and compliant with GDPR and healthcare regulations Engineering Leadership Mentor and support engineers across the organisation Conduct code reviews and promote engineering best practices Help establish coding standards, testing frameworks, and operational excellence Foster a collaborative, high performing engineering culture Technology Stack Cloud & Infrastructure AWS (Lambda, API Gateway, EventBridge, SQS, Step Functions, S3, CloudWatch, RDS) Backend Node.js, TypeScript Frontend React, Next.js, Tailwind CSS Data & Architecture PostgreSQL, Serverless, Event Driven Microservices DevOps & Observability Terraform / AWS CDK, CI/CD, Monitoring & Logging About You We are looking for a technically strong and commercially minded engineering leader with: 10+ years of software engineering experience Proven experience operating at Principal Engineer, Staff Engineer, or Architecture Lead level Strong AWS cloud and serverless architecture expertise Excellent full stack development experience across Node.js, TypeScript, React/Next.js, and PostgreSQL Experience leading technical direction across engineering teams Strong understanding of distributed systems and event driven architecture Experience designing scalable, secure, production grade systems A hands on mindset with a passion for building high quality technology Desirable Experience Healthcare or regulated industry experience GDPR and data security knowledge AI/ML integrations or personalisation systems SaaS or startup experience What's On Offer £80,000 - £90,000 salary Hybrid working (Canary Wharf office 2-3 days per week) 30 days holiday including bank holidays Pension contribution Birthday day off Modern equipment provided Team events and collaborative culture Opportunity to shape a fast scaling healthcare platform with genuine social impact

Job details Posted 14 May 2026 Salary Competitive Location London Job type Permanent Full-Time Discipline Tapi Central Roles Reference 003142 Senior Full Stack Engineer (Developer) London Bridge /Hybrid (1-2 days per week in the office) We're looking for a Senior Full Stack Engineer to help build and evolve the digital platforms that power customer journeys, e-commerce and operational systems across Tapi. This is a hands on engineering role within a growing product and technology team, focused on delivering scalable, high performing applications that make a measurable impact on both customer experience and commercial performance. You'll work across end to end delivery, from understanding user and business problems through to designing, building and improving scalable solutions using React, C# .NET and Microsoft Azure. We're looking for someone who takes real pride in the products they build, understands the impact of engineering decisions and enjoys solving problems within a product led environment. What You'll Be Doing Designing, building and supporting scalable applications using React, C# .NET and Microsoft Azure Delivering end to end features across front end applications, APIs and backend services Building digital products and e-commerce experiences used by customers and colleagues across the business Working closely with Product Managers, Designers and stakeholders to understand business needs and translate them into effective technical solutions Writing clean, maintainable and well tested code Improving application performance, scalability, resilience and user experience Contributing to CI/CD pipelines, DevOps practices and engineering standards Supporting platform modernisation and continuous improvement across the technology estate Collaborating with engineers across the team to solve problems, share knowledge and improve ways of working Skills & Experience Essential Strong commercial experience in full stack software engineering Strong experience with: React (TypeScript preferred) C# / .NET Core / .NET 6+ Microsoft Azure Experience building and supporting e-commerce, digital or product platforms Good understanding of APIs, microservices and distributed systems Experience with CI/CD pipelines, DevOps practices and cloud infrastructure Experience improving application performance and user experience Strong understanding of software engineering principles and design patterns Experience working within agile, product led environments Desirable Experience with headless or composable e-commerce architectures Familiarity with event driven architecture Experience integrating with payments, search or marketing platforms Exposure to analytics, experimentation or A/B testing Interest in AI assisted engineering, automation or modern developer tooling What We're Looking For We're looking for someone who: Understands how engineering decisions impact customers, colleagues and commercial outcomes Enjoys building products, not just writing code Takes ownership and pride in delivering high quality solutions Thinks end to end about user experience and product outcomes Communicates well and collaborates effectively with technical and non technical teams Brings curiosity, pragmatism and a continuous improvement mindset Why Join Tapi? Technology is a key part of Tapi's growth journey, and you'll be joining during an exciting phase of transformation and investment. You'll have the opportunity to work on modern platforms, contribute to meaningful digital change and help shape products that make a real difference across the business and customer experience. If you're looking for a role where you can build impactful products, work across modern technologies and be part of a collaborative engineering environment, we'd love to hear from you.

Sponsorship Unfortunately we are unable to offer sponsorship for this role. This role in 3 words Build, Collaborate, Deliver Top 3 qualities for this role Communication, Delivery Expertise, Amplification Where you'll work Depending on the needs of your business area, we expect hub based people to be in the office at least once a week, and to go to OVO Connection events in-person. You'll be assigned to the closest one of our three hub offices, Bristol, Glasgow, or London; unless your role requires field based work. Each hub has accessible spaces to park your laptop, is designed to inspire people, help them connect and bring big ideas to life. Everyone belongs at OVO At OVO, we are on a mission to solve one of humanity's biggest challenges, the climate crisis. And we know it takes all of us to change the world. That's why we need diverse people from all abilities, gender identities, ethnicities, ages, sexual orientations, life experiences and backgrounds to join us. Teamworking for the planet Everything we do here spins around Plan Zero. So, naturally, the team you'll be joining plays a gigantic role in making that happen. Here's how: As a Senior Software Engineer, you'll own the end to end development of complex systems and features that are core to our business. This role in a nutshell You will lead technical initiatives, make critical design decisions, and mentor engineers to elevate the team's capabilities. Your expertise will be the driving force that ensures we build scalable, high quality software that pushes our company forward. This role involves collaborating with multidisciplinary teams to develop AI driven products delivered through mobile applications. Ideal candidates will have experience bringing AI solutions to market and working within the constraints of mobile platforms. Your key outcomes will be Technical Leadership & Architecture: Drive the architectural vision for key features, designing robust, scalable systems and contributing to the technical roadmap to influence the future direction of the product. Engineering Excellence & Quality: Champion best practices by writing clean, efficient code, leading rigorous code reviews, and implementing comprehensive automated testing to ensure high quality, performant solutions. Mentorship & Team Growth: Lead and mentor other engineers, fostering a culture of continuous learning and collaboration through knowledge sharing, technical discussions, and constructive feedback. Project Execution & Delivery: Translate complex projects into clear, executable tasks within an Agile framework, proactively resolving blockers to ensure the timely and efficient delivery of team commitments. Community & Knowledge Sharing: Actively contribute to the wider engineering community by leading discussions, sharing expertise through documentation and workshops, and driving the exchange of best practices. You'll be successful here at OVO if you Professional Experience: Significant hands on experience developing software in an agile environment, with a proven track record of delivering high quality, clean code. Backend & Architecture: Expertise in designing and building scalable microservices based architectures using languages like Node.js, Python, and TypeScript. Cloud & DevOps: Hands on experience with cloud platforms (GCP, AWS), containerization (Docker, Kubernetes), and modern CI/CD practices. Frontend Development: Proficiency in modern frontend frameworks such as React.js and/or React Native. Leadership & Mentorship: Proven ability to lead technical initiatives and mentor other engineers, fostering a culture of technical excellence. Collaboration & Problem Solving: Excellent communication and analytical skills, with the ability to thrive in a high ownership, collaborative team environment. Let's talk about what's in it for you We'll pay you between £55,000 and £85,000, depending on your specific skills and experience. We keep our pay ranges broad on purpose to give us, and you, flexibility to match your experience to our zero carbon mission. You'll be eligible for an on target bonus of 15%. We have one OVO bonus plan that focuses on the collective performance of our people to deliver our Plan Zero goal. We also offer plenty of green benefits and progressive policies to help you feel like you belong at OVO and there's flex pay. We'll give you 9% Flex Pay on top of your salary - 4% of this is auto enrolled into your pension, and the remaining 5% is yours to use for flexible benefits, adding to your pension or taking as cash. Benefits taster 34 days of holiday (including bank holidays) Health plans - healthcare cash plan or private medical insurance depending on your career level, critical illness cover, life assurance, health assessments, and more. Wellbeing - gym membership, travel insurance, workplace ISA, will writing services, dental insurance, and more. Lifestyle - extra holiday buying, discount dining, home & tech loans, and support for your favourite charities through give as you earn donations. Home - up to £400 towards an OVO Energy plan, plus discounts on solar, smart thermostats and EV chargers. Commute - great deals on ultra low emission car leasing, cycle to work scheme, and public transport season ticket loans. For your Belonging To find better ways to support our people, we need to listen to each other's experiences and find ways to build a truly inclusive and diverse workplace. As part of this, we have 8 Belonging Networks at OVO. Led by our people, for our people - so when you join OVO, you can play a part - big or small - with any of the Networks. Contact & Application We'd be thrilled if you tick off all our boxes, yet we also believe it's just as important we tick off all of yours. If you feel you have most of what we're looking for but not every single thing, we encourage you to apply. We also allow you to let us know any additional requirements on the application form to make the process easy and comfortable.

Job Title Senior Software Engineer Company Description - High-growth vehicle management platform Job Description As a Senior Software Engineer at Caura, you will own the evolution of an all-in-one car management platform used by millions. You'll architect distributed systems and build scalable services for major partners like Lloyds Banking Group and MoneySuperMarket. Join a high-agency team of experienced founders to simplify vehicle ownership through technical excellence. Location London, UK Why this role is remarkable Lead high-impact engineering for a platform partnering with industry giants like Lloyds Banking Group, esure, and Motorway to redefine UK driving admin. Join an elite team of serial entrepreneurs and operators who have successfully built and exited startups, offering a masterclass in scaling to profitability. Take full ownership of a modern stack including Svelte, Node.js, and AWS event-driven architecture with the autonomy to shape the product roadmap. What you will do Architect and operate scalable distributed macroservices using TypeScript and Node.js within an event-driven AWS environment (ECS, Lambda, EventBridge). Collaborate directly with design and product teams to translate future visions into stable, secure internal tools and consumer-facing features. Drive engineering excellence by defining platform architecture, spotting production issues early, and experimenting with AI tools to accelerate development workflows. The ideal candidate Extensive production experience building robust APIs and microservices using TypeScript and Node.js as a primary backend focus. Deep technical knowledge of AWS cloud infrastructure, specifically ECS, EventBridge, and Lambda, alongside NoSQL databases like MongoDB. A "scrappy builder" mindset with previous experience in fast-paced startups, comfortable navigating ambiguity and taking end-to-end ownership of complex features.

Job Title Software Engineer (Full stack indicatively 50:50 - Mid-Senior Level) Position Full Time Reporting to Lead Software Engineer (eCommerce) Location UK Hybrid (typically up to 1 day week in the Central London office) Remuneration £55k to £65k (based on level of experience) Company Profile the company was formed in 2004 and is the UK's largest Wholesale Distributor of Solar PV, Energy Storage Systems and EV-charging. With a growing European and international focus the company is now part of the Labora Group since 2021. the company Group turnover is more than £300m and growing at over 50% per year so there has never been a better time to join the team. Our customer base consists of commercial and residential installation companies. Access to our unique on-line portal and design tool, plus our emphasis on product quality, consistency and availability sets us apart in the market. the company is a fast-moving business that responds quickly to any market changes supported by its bespoke ERP system and database and team. Our Mission We seek to be at the forefront of making a positive impact on the world. Our focus is providing Clean Technology to make the world a more sustainable place and every single transaction we make creates a brighter future. Join the company for an opportunity to help change the world with every action you make. It's fast paced, challenging, dynamic and incredibly rewarding, because changing the world isn't easy! the company Group has a vibrant and well established in house Software Engineering capability, supported by specialist partners. Within eCommerce, we lead the definition, design, and engineering of new B2B experiences in how we sell and service our products. The services you build will be both customer facing and colleague facing, integrating deeply with Commercial, Finance, Warehouse, and Fulfilment systems across our wider estate. The Role You are an accomplished mid to senior-level Software Engineer (full stack) and strong communicator, with deep expertise in building and scaling complex, composable solutions - ideally with experience developing eCommerce SaaS platforms (e.g., Shopify, BigCommerce, or commercetools) and leveraging AI and CICD within a collaborative development process. You will develop software within an Agile squad to deliver a high performance, scalable solution that integrates front end systems with back end services to create seamless, powerful digital experiences for our customers and colleagues. You will work closely with senior Product and Engineering leaders and cross functional teams to ensure our platform meets both technical and business needs. This is a high impact position where you will meaningfully contribute to the platform's success in a dynamic, fast paced environment. Main Duties This is a hands on contributor role, designing, delivering, and supporting software for a complex, scalable, composable eCommerce platform leveraging SaaS/PaaS to serve business customers and colleagues across multiple geographic locations (based from the UK). Developing and integrating APIs, microservices, and third party solutions (e.g., ERP, PIM, CRM) to create a seamless customer experience. Ensuring high quality, maintainable code aligned with engineering best practices. Participating in collaborative code reviews, architecture discussions, and technical workshops. Working closely with Product Management, UX/UI Designers, eCommerce SaaS providers, and DevOps to ensure the platform meets business requirements and delivers a high quality user experience. Collaborating with stakeholders to understand customer specific workflows, journeys, and technical requirements. Implementing personalisation, catalogue management, pricing engines, and B2B specific capabilities such as complex order workflows, bulk ordering, and account based pricing. Ensuring platform scalability and reliability to support large volumes of data and transactions, with a strong focus on uptime and responsiveness. Implementing and maintaining high standards for security, data privacy, and compliance across all systems. Leading initiatives for process improvement, performance optimisation, and technical debt reduction. Note: This job description is not exhaustive. The jobholder should be flexible in undertaking other reasonable duties to meet business needs. What We're Looking For You don't need to tick every box, but strong candidates will demonstrate many of the following: Must haves Extensive capability as a mid to senior level software engineer (full-stack development and testing) delivering complex digital products within a software development team (or equivalent) including CICD pipelines. Strong capability with Infrastructure As Code such as Terraform (Bicep is preferred) Strong understanding of API driven development, including RESTful APIs, GraphQL, and event driven architectures. Experience integrating with enterprise systems Excellent communication skills, with the ability to influence and adapt communication styles. A deeply customer focused and curious mindset, comfortable engaging directly with users. Capability to lead the technical delivery of complex initiatives, collaborating with cross functional partners to define the right outcomes. Ability to influence team direction, roadmap discussions, and decision making. Nice to haves Expertise working with our technology stack: TypeScript, Node, Shopify Liquid, Bicep, Azure DevOps and Pipelines Experience with other modern front end frameworks (e.g., React, Vue.js) and backend technologies (e.g. Python, Ruby). Hands on experience with microservices architecture, serverless functions, and cloud infrastructure (Azure preferred, but AWS or GCP transferable). Interest in emerging technologies and AI assisted design/development workflows (e.g. Cursor). Complimentary skills in technical operations, security, user experience, software architecture, or Agile delivery. Knowledge and or experience within the photovoltaic industry For clarity the role does not involve line managing other colleagues. What We Offer Competitive salary 25 days holiday (plus bank holidays) Pension Life Assurance Discounted company products Cycle to Work Scheme Electric Car scheme Career Development Employee Assistance Scheme Staff events and surprises A supportive and inclusive work environment with opportunities for professional development Inclusivity Our differences make up a significant part of our strengths. At the company, we seek an inclusive and diverse workplace where every individual feels valued, respected, and empowered to bring their authentic selves to work. We believe that diversity drives innovation and creativity, and we actively seek to build on our already inclusive culture. ( not words ) We encourage applications from candidates of all backgrounds, race, national or ethnic origin, colour, religion, age, sex, sexual orientation, gender identity or expression, marital status, family status, genetic characteristics, disability. If you need any adjustments during the application or interview process, please let us know. We are dedicated to creating equal opportunities for all, and we encourage candidates from underrepresented groups to apply. Work Location: In person

Sponsorship Unfortunately we are unable to offer sponsorship for this role. This role in 3 words Build, Collaborate, Deliver Top 3 qualities for this role Communication, Delivery Expertise, Amplification Where you'll work Depending on the needs of your business area, we expect hub based people to be in the office at least once a week, and to go to OVO Connection events in-person. You'll be assigned to the closest one of our three hub offices, Bristol, Glasgow, or London; unless your role requires field based work. Each hub has accessible spaces to park your laptop, is designed to inspire people, help them connect and bring big ideas to life. Everyone belongs at OVO At OVO, we are on a mission to solve one of humanity's biggest challenges, the climate crisis. And we know it takes all of us to change the world. That's why we need diverse people from all abilities, gender identities, ethnicities, ages, sexual orientations, life experiences and backgrounds to join us. Teamworking for the planet Everything we do here spins around Plan Zero. So, naturally, the team you'll be joining plays a gigantic role in making that happen. Here's how: As a Senior Software Engineer, you'll own the end to end development of complex systems and features that are core to our business. This role in a nutshell You will lead technical initiatives, make critical design decisions, and mentor engineers to elevate the team's capabilities. Your expertise will be the driving force that ensures we build scalable, high quality software that pushes our company forward. This role involves collaborating with multidisciplinary teams to develop AI driven products delivered through mobile applications. Ideal candidates will have experience bringing AI solutions to market and working within the constraints of mobile platforms. Your key outcomes will be Technical Leadership & Architecture: Drive the architectural vision for key features, designing robust, scalable systems and contributing to the technical roadmap to influence the future direction of the product. Engineering Excellence & Quality: Champion best practices by writing clean, efficient code, leading rigorous code reviews, and implementing comprehensive automated testing to ensure high quality, performant solutions. Mentorship & Team Growth: Lead and mentor other engineers, fostering a culture of continuous learning and collaboration through knowledge sharing, technical discussions, and constructive feedback. Project Execution & Delivery: Translate complex projects into clear, executable tasks within an Agile framework, proactively resolving blockers to ensure the timely and efficient delivery of team commitments. Community & Knowledge Sharing: Actively contribute to the wider engineering community by leading discussions, sharing expertise through documentation and workshops, and driving the exchange of best practices. You'll be successful here at OVO if you Professional Experience: Significant hands on experience developing software in an agile environment, with a proven track record of delivering high quality, clean code. Backend & Architecture: Expertise in designing and building scalable microservices based architectures using languages like Node.js, Python, and TypeScript. Cloud & DevOps: Hands on experience with cloud platforms (GCP, AWS), containerization (Docker, Kubernetes), and modern CI/CD practices. Frontend Development: Proficiency in modern frontend frameworks such as React.js and/or React Native. Leadership & Mentorship: Proven ability to lead technical initiatives and mentor other engineers, fostering a culture of technical excellence. Collaboration & Problem Solving: Excellent communication and analytical skills, with the ability to thrive in a high ownership, collaborative team environment. Let's talk about what's in it for you We'll pay you between £55,000 and £85,000, depending on your specific skills and experience. We keep our pay ranges broad on purpose to give us, and you, flexibility to match your experience to our zero carbon mission. You'll be eligible for an on target bonus of 15%. We have one OVO bonus plan that focuses on the collective performance of our people to deliver our Plan Zero goal. We also offer plenty of green benefits and progressive policies to help you feel like you belong at OVO and there's flex pay. We'll give you 9% Flex Pay on top of your salary - 4% of this is auto enrolled into your pension, and the remaining 5% is yours to use for flexible benefits, adding to your pension or taking as cash. Benefits taster 34 days of holiday (including bank holidays) Health plans - healthcare cash plan or private medical insurance depending on your career level, critical illness cover, life assurance, health assessments, and more. Wellbeing - gym membership, travel insurance, workplace ISA, will writing services, dental insurance, and more. Lifestyle - extra holiday buying, discount dining, home & tech loans, and support for your favourite charities through give as you earn donations. Home - up to £400 towards an OVO Energy plan, plus discounts on solar, smart thermostats and EV chargers. Commute - great deals on ultra low emission car leasing, cycle to work scheme, and public transport season ticket loans. For your Belonging To find better ways to support our people, we need to listen to each other's experiences and find ways to build a truly inclusive and diverse workplace. As part of this, we have 8 Belonging Networks at OVO. Led by our people, for our people - so when you join OVO, you can play a part - big or small - with any of the Networks. Contact & Application We'd be thrilled if you tick off all our boxes, yet we also believe it's just as important we tick off all of yours. If you feel you have most of what we're looking for but not every single thing, we encourage you to apply. We also allow you to let us know any additional requirements on the application form to make the process easy and comfortable.

Sponsorship Unfortunately we are unable to offer sponsorship for this role. This role in 3 words Build, Collaborate, Deliver Top 3 qualities for this role Communication, Delivery Expertise, Amplification Where you'll work Depending on the needs of your business area, we expect hub based people to be in the office at least once a week, and to go to OVO Connection events in-person. You'll be assigned to the closest one of our three hub offices, Bristol, Glasgow, or London; unless your role requires field based work. Each hub has accessible spaces to park your laptop, is designed to inspire people, help them connect and bring big ideas to life. Everyone belongs at OVO At OVO, we are on a mission to solve one of humanity's biggest challenges, the climate crisis. And we know it takes all of us to change the world. That's why we need diverse people from all abilities, gender identities, ethnicities, ages, sexual orientations, life experiences and backgrounds to join us. Teamworking for the planet Everything we do here spins around Plan Zero. So, naturally, the team you'll be joining plays a gigantic role in making that happen. Here's how: As a Senior Software Engineer, you'll own the end to end development of complex systems and features that are core to our business. This role in a nutshell You will lead technical initiatives, make critical design decisions, and mentor engineers to elevate the team's capabilities. Your expertise will be the driving force that ensures we build scalable, high quality software that pushes our company forward. This role involves collaborating with multidisciplinary teams to develop AI driven products delivered through mobile applications. Ideal candidates will have experience bringing AI solutions to market and working within the constraints of mobile platforms. Your key outcomes will be Technical Leadership & Architecture: Drive the architectural vision for key features, designing robust, scalable systems and contributing to the technical roadmap to influence the future direction of the product. Engineering Excellence & Quality: Champion best practices by writing clean, efficient code, leading rigorous code reviews, and implementing comprehensive automated testing to ensure high quality, performant solutions. Mentorship & Team Growth: Lead and mentor other engineers, fostering a culture of continuous learning and collaboration through knowledge sharing, technical discussions, and constructive feedback. Project Execution & Delivery: Translate complex projects into clear, executable tasks within an Agile framework, proactively resolving blockers to ensure the timely and efficient delivery of team commitments. Community & Knowledge Sharing: Actively contribute to the wider engineering community by leading discussions, sharing expertise through documentation and workshops, and driving the exchange of best practices. You'll be successful here at OVO if you Professional Experience: Significant hands on experience developing software in an agile environment, with a proven track record of delivering high quality, clean code. Backend & Architecture: Expertise in designing and building scalable microservices based architectures using languages like Node.js, Python, and TypeScript. Cloud & DevOps: Hands on experience with cloud platforms (GCP, AWS), containerization (Docker, Kubernetes), and modern CI/CD practices. Frontend Development: Proficiency in modern frontend frameworks such as React.js and/or React Native. Leadership & Mentorship: Proven ability to lead technical initiatives and mentor other engineers, fostering a culture of technical excellence. Collaboration & Problem Solving: Excellent communication and analytical skills, with the ability to thrive in a high ownership, collaborative team environment. Let's talk about what's in it for you We'll pay you between £55,000 and £85,000, depending on your specific skills and experience. We keep our pay ranges broad on purpose to give us, and you, flexibility to match your experience to our zero carbon mission. You'll be eligible for an on target bonus of 15%. We have one OVO bonus plan that focuses on the collective performance of our people to deliver our Plan Zero goal. We also offer plenty of green benefits and progressive policies to help you feel like you belong at OVO and there's flex pay. We'll give you 9% Flex Pay on top of your salary - 4% of this is auto enrolled into your pension, and the remaining 5% is yours to use for flexible benefits, adding to your pension or taking as cash. Benefits taster 34 days of holiday (including bank holidays) Health plans - healthcare cash plan or private medical insurance depending on your career level, critical illness cover, life assurance, health assessments, and more. Wellbeing - gym membership, travel insurance, workplace ISA, will writing services, dental insurance, and more. Lifestyle - extra holiday buying, discount dining, home & tech loans, and support for your favourite charities through give as you earn donations. Home - up to £400 towards an OVO Energy plan, plus discounts on solar, smart thermostats and EV chargers. Commute - great deals on ultra low emission car leasing, cycle to work scheme, and public transport season ticket loans. For your Belonging To find better ways to support our people, we need to listen to each other's experiences and find ways to build a truly inclusive and diverse workplace. As part of this, we have 8 Belonging Networks at OVO. Led by our people, for our people - so when you join OVO, you can play a part - big or small - with any of the Networks. Contact & Application We'd be thrilled if you tick off all our boxes, yet we also believe it's just as important we tick off all of yours. If you feel you have most of what we're looking for but not every single thing, we encourage you to apply. We also allow you to let us know any additional requirements on the application form to make the process easy and comfortable.

Senior DLT / Smart Contract Engineering Lead (Capital Markets & Banking) Lead the design and delivery of enterprise grade blockchain solutions within regulated financial environments. This role focuses on smart contract engineering, tokenised securities, digital cash integration, and secure, compliant DLT platforms for capital markets, payments, and settlement systems. Hybrid Working The places that you work from day to day will vary according to your role, your needs, and those of the business; it will be a blend of Company offices, client sites, and your home; noting that you will be unable to work at home 100% of the time. Blockchain & Solution Delivery Design and implement distributed ledger solutions for capital markets, payments, custody and settlement systems. Deliver production grade blockchain systems for banks, Financial Market Infrastructures (FMIs), exchanges and regulated fintechs. Integrate on chain logic with off chain enterprise systems, including core banking platforms, Central Securities Depositories (CSDs), payment rails and regulatory reporting systems. Smart Contract Engineering Develop, test, audit, and deploy secure Solidity based smart contracts. Implement advanced contract logic for asset issuance, transfer, redemption, lifecycle event management and settlement workflows (DvP, escrow, atomic swaps). Design and implement token standards (fungible, NFT, hybrid securities), gas optimised architectures and upgradeable contract patterns. Tokenisation & Digital Cash Build and manage tokenisation frameworks for securities and financial instruments, tokenised assets across lifecycle stages, stablecoins, tokenised bank deposits and on chain cash leg representations for DvP. Ensure compliance with regulatory requirements for on chain financial products. Blockchain Platforms & Standards Work across public and permissioned DLT platforms: Ethereum, Hyperledger Besu, Corda. Apply enterprise blockchain standards for privacy, interoperability and tokenised securities markets. Security, Custody & Cryptography Ensure secure smart contract design by addressing reentrancy attacks, access control vulnerabilities and precision/overflow issues. Design custody and wallet solutions using MPC (Multi Party Computation), HSM backed signing and policy based wallet controls. Implement privacy preserving mechanisms: permissioned access models, selective disclosure and zero knowledge proof concepts. Cloud, DevOps & Engineering Excellence Build and deploy cloud native applications on AWS, Azure or GCP. Operate containerised systems using Kubernetes and microservices architectures. Implement DevSecOps practices: CI/CD pipelines for smart contracts and backend services, automated testing and security scanning and Infrastructure as Code. Ensure production reliability through monitoring (Prometheus, Grafana) and observability frameworks; secure secrets and key management. Job Skills & Experience 12+ years of software engineering experience. 4-6+ years of hands on smart contract development. Proven experience in regulated environments (banks, FMIs, exchanges, fintechs). Core Technical Skills Advanced Solidity development. Experience with Ethereum, Hyperledger Besu and Corda. Token standards: ERC 20, ERC 721, ERC 1155 and hybrid models. Financial Domain Knowledge Securities lifecycle management. Clearing and settlement processes. Corporate actions and custody. Delivery vs Payment (DvP) mechanisms. System Integration Core banking integration. Payment systems and rails. Regulatory reporting platforms. Hybrid On chain/Off chain Architectures Experience designing hybrid on chain/off chain architectures that integrate seamlessly with existing financial systems. DEI Statement We are a Disability Confident Employer (Level 2).

About Octopus Energy Octopus Energy started with a bold idea: to build Britain's first truly digital energy supplier. By combining world class tech with people who care deeply about customers, we helped drive the renewable energy transition and became Britain's largest energy supplier in 2025. We scale our services business by making it easy to switch to heat pumps, solar, EVs and by launching smart tariffs for low carbon tech. We expand the product and customer experience worldwide. Role Overview We are looking for a Senior Backend Engineer to join our Low Carbon Tech team. The team installs EV chargers, solar, batteries and heat pumps into homes to accelerate the energy transition while ensuring that scaling up never compromises a world class customer journey. What you'll do Take total technical ownership of key platform components, shaping direction and bringing clarity to ambiguous problems while ensuring solutions are well designed, scalable, and maintainable. Consistently write production ready, self documenting code that requires minimal revision, and actively improve testing strategies, non functional requirements (performance, security, scale) and test infrastructure. Tackle systemic bottlenecks and architectural risks across multi service configurations before they hit production, utilising highly systematic debugging approaches. Mentor other engineers, lead technical discussions, and perform rigorous code reviews to strengthen our systems, practices and people. What you'll need 5+ years of robust backend development experience with deep expertise in systems design, database optimisation (PostgreSQL/MySQL) and cloud execution. Excited by the possibilities of integrating AI tools into your workflow to iterate quickly, combined with discipline to rigorously check and ensure code quality. Clear communication skills, with a proven ability to translate complex technical constraints and architectural risks to non technical stakeholders (compliance, operations, business development). A genuine curiosity about the green technology landscape. Our Tech Stack Python, Django PostgreSQL, Celery and asynchronous background processing API architectures: HTTP, REST APIs, GraphQL Domain modelling, fault tolerant systems, test driven deployment (TDD) AWS, Terraform, Packer, Consul, microservices and distributed architecture scaling Benefits Competitive salary that depends on experience and skillset. Opportunity to work on products that accelerate a clean energy future. Flat hierarchies, open agile culture and autonomy in work. Work across services, marketing, operations and data teams. Location & Working Arrangement Our London office is preferred, but we consider remote candidates who can work in the UK. Equal Opportunity Statement As an equal opportunity employer, we do not discriminate on the basis of any protected attribute. Our commitment is to provide equal opportunities, an inclusive work environment, and fairness for everyone.

Responsibilities Deliver new functionality or features, using the most appropriate tools & techniques Ensure quality is at the heart of everything you and your team do Continuously improve the code base Keep our customer as the number one priority Actively identify blockers, boulders, time sinks and waste, and actively attempt to remove them Make significant contribution to technical decisions Act as a coach and mentor to others in the team Take full ownership of the development lifecycle from code to production, including deployment and monitoring Tech Stack Languages & Frameworks: C# (.NET 6-10) Databases: DynamoDB, PostgreSQL Cloud & Infrastructure: AWS Cloud, Docker, Terraform CI/CD & DevOps: GitHub Actions Monitoring & Logging: New Relic, ELK Stack Qualifications Experience mentoring less experienced engineers and comfortable pair-programming with colleagues Hands on experience with C# .NET and the latest features Experience collaborating with front-end engineers and other disciplines to deliver end-to-end features and cross-functional epics Experience working with identity and authentication systems (e.g. IdentityServer, OpenID Connect, OAuth2) Experience designing and maintaining CI/CD pipelines (e.g. GitHub Actions, TeamCity, Spacelift or similar tools) Experience with cloud platforms (AWS preferred; Azure or GCP also valuable) Hands on experience with Infrastructure as Code, particularly Terraform Strong experience with observability practices (logging, monitoring, alerting) Familiarity with tools such as New Relic and ELK stack (or equivalents) Curiosity about AI and emerging tools Experience supporting production systems and improving reliability Strong experience building and operating microservices architectures Experience with event-driven systems and asynchronous messaging patterns Solid understanding of distributed systems and scalability challenges Have excellent communication skills Benefits Enjoy fantastic perks like private healthcare & dental insurance, a generous work from abroad policy, 2-for-1 share purchase plans, an EV Scheme to further reduce carbon emissions, extra festive time off, and excellent family friendly benefits. We prioritise career growth with clear career paths, transparent pay bands, personal learning budgets, and regular learning days. Jump on board and supercharge your career from day one! We operate a hybrid model to work and ask that Trainliners work from the office a minimum of 60% of their time over a 12 week period. We also have a 28 day Work from Abroad policy. We know that having a diverse team makes us better and helps us succeed. And we mean all forms of diversity - gender, ethnicity, sexuality, disability, nationality and diversity of thought. That's why we're committed to creating inclusive places to work, where everyone belongs and differences are valued and celebrated. Compensation Range: £85K - £95K

Cacheflow is seeking an experienced Expert Backend Engineer to join our expanding R&D team in Greater London. In this role, you will focus on developing and maintaining large-scale backend components for our cloud security platform. The ideal candidate will have over 8 years of experience in backend engineering, expertise in cloud platforms like AWS and GCP, and a strong grip on microservices architecture. This position offers an opportunity to be part of a rapidly growing environment committed to security and innovation.

About the company The company has built the world's largest and most global network for on-demand production of customized items e.g. t-shirts, wall art, mugs, books, hoodies, and cards. We support a new wave of e-commerce entrepreneurs and the global shift towards local and more sustainable production. In many ways, we at the company are rethinking how digital fabrication of customized products can be done on-demand. Just imagine what will happen when we add 3D printing capabilities to this global service. We are already empowering thousands of e-commerce entrepreneurs to grow and scale their businesses. Platform the company is an AI-first, cloud-native platform transforming local, on-demand production and delivery - with zero physical assets. We power: Global production orchestration: connecting e-commerce customers to 130+ partners across 32 countries. From AI-guided plate design to smart routing and logistics, we deliver to over 5 billion people in under 72 hours-faster, greener, smarter. GelatoConnect: our AI-driven print production OS that helps producers master digital printing - from inventory to shipping - by automating every step: procurement, prepress, printing, packaging, and dispatch. It's machine-agnostic, real-time, and built for uptime, precision, and profitability. AI at the Core We are not just early adopters of AI - we're AI-native builders. Across engineering, product, and operations, we embrace AI to accelerate innovation: AI-first development using LLMs for code generation, testing, documentation, and design exploration. Autonomous AI agents driving platform resilience, observability, cost control, and internal workflow automation. AI-native product features built into GelatoConnect and the core platform - improving routing, personalization, and production optimization. A culture of continuous experimentation with RAG, agent orchestration, prompt engineering, and model fine-tuning. What you will be doing Using the latest technologies to solve real problems for our customers at a massive scale Collaborating closely with other engineers as a valuable member of a cross-functional team Sharing your knowledge and building creative solutions while helping the team evolve best practices Designing, developing, and deploying backend services with a focus on high availability, low latency, and scalability Taking end-to-end responsibility for the services that are owned by your team, including taking part in an on-call rotation Who you are A programming language agnostic having 5+ years of experience in a similar role Having a minimum of B.S. degree in Information Technology or Computer Sciences Able to adapt, change and grow quickly as we scale the organization Passionate about engineering practices like agile, continuous delivery, test-driven development, traceability, and observability Growth mentality, are curious and not afraid to be experimental. You share your ideas and continuously improve yourself and the team around you Solid experience as an Engineer designing, developing, and maintaining API driven solutions Strong communication skills, high integrity, and great attention to detail Possess knowledge and experience, or have an interest in working with: Docker and Kubernetes GoLang (Go-kit, DDD) and PHP (Symfony) Microservices architecture PostgreSQL, BigQuery, RabbitMQ Memcache, Redis ELK, DataDog, Prometheus & Grafana What it's like to work at the company We are a customer-obsessed team with the ambition to change the world by connecting technology to the printing industry and making it much more sustainable. Everyone who joins our team must feel genuinely intrigued and motivated by our mission. We expect a lot. We are a driven team with big goals, so we seek individuals who are genuinely passionate about their work and possess an entrepreneurial spirit. Our culture is unique and we live by our values, so it's worth learning more about our culture and how we work before presenting your application. At the company, we pride ourselves on our global presence with 14 offices worldwide, fostering a dynamic and diverse work environment. Rooted in a culture that values collaboration, creativity, and camaraderie, we actively cultivate a company culture that thrives on shared experiences. We encourage team members to embrace this culture by working from our inspiring office spaces at least three days a week, allowing for meaningful connections and collective growth.