45 jobs found

Location Bristol, London, Manchester About the job Job summary The Government Digital Service (GDS) is the digital centre of government. We are responsible for setting, leading and delivering the vision for a modern digital government. Our priorities are to drive a modern digital government, by: joining up public sector services harnessing the power of AI for the public good strengthening and extending our digital and data public infrastructure elevating leadership and investing in talent funding for outcomes and procuring for growth and innovation committing to transparency and driving accountability We are home to the Incubator for Artificial Intelligence (I.AI), the world-leading GOV.UK and at the forefront of coordinating the UK's geospatial strategy and activity. We lead the Government Digital and Data function and champion the work of digital teams across government. We're part of the Department for Science, Innovation and Technology (DSIT) and employ more than 1,000 people all over the UK, with hubs in Manchester, London and Bristol. The Government Digital Service is where talent translates into impact. From your first day, you'll be working with some of the world's most highly-skilled digital professionals, all contributing their knowledge to make change on a national scale. Join us for rewarding work that makes a difference across the UK. You'll solve some of the nation's highest-priority digital challenges, helping millions of people access services they need The GOV.UK One Login Programme represents a once in a generation opportunity to simplify and widen access to all digital government services. Sitting at the heart of the government, we are building one simple, safe and secure way for users to log in and prove who they are that will work across all government services. Effective identity assurance is central to digital transformation and GOV.UK One Login enables people to prove who they are online, with the necessary level of confidence to access and use particular services. Our technology stack runs on AWS, using serverless compute and storage products. Backend services are written in TypeScript/Node.js and JVM technologies. Web applications also use TypeScript. Job description As a GDS Lead Technical architect, you'll share the responsibility for the digital transformation of government. You will help design and drive the technical strategy for the area you work in while ensuring alignment with broader GDS standards and goals. You'll hold the vision for technical architecture best practice in your area, enabling us to build resilient and reliable government services, communicating this to technical and non-technical audiences alike. Lead Technical Architects often work across different teams and services. You'll ensure that technical designs meet user needs and acceptance criteria, whilst conforming to time and budget constraints. You'll thrive using agile methods and enjoy working collaboratively with departments and multidisciplinary teams. Above all, you'll want to make government better, which may sometimes involve challenging the status quo. As a Lead Technical Architect, you'll: lead by example, be a visible leader who takes responsibility and acts as a role model contribute to the development and iteration of GDS architectural and engineering practices, principles and standards design technical services or plan system integration, selecting necessary platforms and technologies to meet project requirements and user needs provide technical leadership and consultancy to both internal and external development teams, ensuring designs & solutions are fit for purpose, whilst meeting time and budget restraints build and maintain technical roadmaps, looking ahead for future opportunities or blockers, and ensuring decisions by development teams align with the strategy encourage communication across multiple teams and wider organisational areas to identify strategic requirements and dependencies help develop services by contributing code, testing technologies and producing rapid prototypes advise teams on the right mix of capabilities to achieve their roadmapped goals and desired service levels act as a digital ambassador across government, supporting recruitment, identifying good practices for GDS to adopt and sharing experiences, e.g. through blog posts, tech talks at conferences etc be involved in helping recruiting technical architects and other senior technologists, where appropriate, helping sift and interview manage, coach and mentor more junior Technical Architects as well as others in the wider software engineering community Person specification We're interested in people who have: an understanding of how to influence, manage and challenge complex stakeholder relationships and communicate with both technical and non-technical audiences a passion for technology and its delivery in building a user-centric service in an ever changing space, ensuring the right technology solutions meet outcomes for our users strong software development and application architecture experience, with good knowledge of cloud technologies, open source technologies, testing, and at least one programming language such as Ruby, Java, Python or Javascript experience of developing and managing high performing, agile, technical teams and creating an inclusive, collaborative culture across boundaries and locations practical knowledge at all levels of the web stack, from front-end code down to infrastructure and networking a deep understanding of modern technology practices such as test-driven development (TDD), continuous integration, continuous delivery and DevOps a good knowledge of cloud security architecture, including threat modelling, analysis and operations experience developing and implementing technical strategy and standards experience defining and refining technical governance in multidisciplinary agile environments If you meet a few of those criteria but think that you might not meet every last one then don't let that stop you from submitting an application.

Senior Backend Engineer (Telco Integration Lead) We are seeking a deeply technical and security-minded Senior Backend Engineer to join a newly-founded, high-impact AI joint venture. Backed by five of the world's leading telecommunications giants, our mission is to restore trust in global voice communication. This is not a standard Back End role. We are seeking a foundational engineer to own our single greatest strategic asset: our unique, privileged access to network-level intelligence via the GSMA CAMARA API standard. This is our right to win, and you will be the engineer responsible for building the bridge to it. You will be the Critical Path Owner for Track Zero, the 30-day foundational sprint to validate and integrate the first-ever CAMARA-based signals (like sim-swap and device-roaming-status) from our telco founders. Your success is the Go/No-Go gate for our MWC 2026 launch. You will be directly responsible for building the out-of-band data path that enables our flagship Telco-Verified Security Shield and its sub-500ms Time-to-Trust metric, our core differentiator that no over-the-top competitor can replicate. This position offers a unique opportunity to define a new category of network-aware security, working directly with the world's leading carriers to turn their network data into a Real Time defense against global fraud. Key Responsibilities Telco Integration & Architecture Own and build the Security Signal Ingestion path, the secure, low-latency, and out-of-band data channel connecting to our founding members' network API gateways. Architect and implement a carrier-agnostic, vendor-agnostic connector layer to consume RESTful APIs from a heterogeneous global landscape of telco partners and IMS vendors (eg, Nokia, Ericsson, Mavenir). Serve as the primary technical liaison to the engineering teams at our telco founders (Deutsche Telekom, Singtel, SKT, etc.), working hand-in-glove to navigate, validate, and productionize their new CAMARA network APIs. Design and build the high-throughput microservices that will query, ingest, normalize, and cache network signals (eg, sim-swap, device-roaming-status) to be used in our Real Time Scam_Score model. Implement a mandatory Zero Trust security model for this critical integration, our most sensitive asset. This includes mTLS, least-privilege IAM, and network micro-segmentation. System Ownership & Performance Serve as the Critical Path Owner for Track Zero, our 30-day sprint to validate and integrate Real Time signals from at least two telco partners, culminating in a Go/No-Go demo. Ensure all network API integrations meet the stringent P99 latency budgets (eg, < 150ms) required to support our sub-500ms Time-to-Trust product goal. Collaborate with the platform team to build a parallel development path using mocked data to mitigate risks of network API delays. Define and own the data contracts and pipelines that feed this "ground-truth" network data from the integration layer to our core AI Service Bus (Apache Kafka). Cross-functional Collaboration Work closely with the Scam Detection Service and AI/ML teams to define the feature vectors and data payloads needed from the network to power our proprietary machine learning models. Partner with product and leadership to define the Phase 2 (post-MWC) roadmap for co-developing new, proprietary network APIs (like Caller_Velocity from CDRs) that will become our long-term, indefensible moat. Document integration architectures, data schemas, and security controls to create setup guides for our Founding Member partners. Collaborate with our external InfoSec vendor to ensure the integration layer is continuously validated and hardened against threats. Required QualificationsEducation & Experience Bachelor's degree in Computer Science, Engineering, or a related field. 7+ years of hands-on experience in Back End engineering, with a proven track record of building and maintaining high-performance, distributed systems in production. Required Technical Skills A minimum of 5 years of production experience with Go (Golang). Experience in other languages (eg, Python, Node.js) is valued, but will not replace this core Go requirement. Strong, demonstrable experiefnce with Real Time, low-latency data processing. You obsess over milliseconds and understand the trade-offs. Proficiency with cloud platforms (AWS, GCP, or Azure) and containerization technologies (Kubernetes, Docker). Deep understanding of API design (REST, gRPC, Webhooks) and API security (OAuth 2.0, mTLS, JWTs). Knowledge of (or deep, demonstrable curiosity about) telecommunications protocols and architectures. You must be comfortable talking to network engineers. Experience with high-throughput messaging or streaming platforms (eg, Kafka, Pulsar). This is a permanent position with hybrid working of two days a week in the central London office and the rest WFH. The salary is very much Dependent on experience with a guide between £110k-£140K basic + package.

This role offers the opportunity to both shape the future of the cloud platform and backend components and take on a leadership position within the Platform team. You will be responsible for guiding technical direction, managing stakeholder expectations, and driving the development of platform features and operability at scale. The role is 70% individual contributor and 30% leadership. Responsibilities Technical Contribution: Design, build, test, and evolve the platform with a focus on scalability and production reliability. Scaling the Platform: Build and optimise systems that enable the Platform to serve hundreds of thousands of users. Team Leadership: Lead the Platform team while ensuring the platform meets the needs of the product, other teams and end users. Required Skills 5+ years of hands-on experience with at least one major cloud infrastructure provider (AWS or GCP) Proven ability to design, build, and operate scalable and secure production systems Practical experience using Kubernetes in at least one production system at scale Strong experience with Infrastructure as Code (e.g. Pulumi, Terraform) Knowledge of CI/CD best practices, with the ability to identify and implement improvements to team efficiency Strong expertise in one of Python, Go, or Rust Able to (at least) read Rust code Combined background in DevOps and software engineering Demonstrated leadership experience, having managed small teams of at least 2-3 engineers

This role offers the opportunity to both shape the future of the cloud platform and backend components and take on a leadership position within the Platform team. You will be responsible for guiding technical direction, managing stakeholder expectations, and driving the development of platform features and operability at scale. The role is 70% individual contributor and 30% leadership. Responsibilities Technical Contribution: Design, build, test, and evolve the platform with a focus on scalability and production reliability. Scaling the Platform: Build and optimise systems that enable the Platform to serve hundreds of thousands of users. Team Leadership: Lead the Platform team while ensuring the platform meets the needs of the product, other teams and end users. Required Skills 5+ years of hands-on experience with at least one major cloud infrastructure provider (AWS or GCP) Proven ability to design, build, and operate scalable and secure production systems Practical experience using Kubernetes in at least one production system at scale Strong experience with Infrastructure as Code (e.g. Pulumi, Terraform) Knowledge of CI/CD best practices, with the ability to identify and implement improvements to team efficiency Strong expertise in one of Python, Go, or Rust Able to (at least) read Rust code Combined background in DevOps and software engineering Demonstrated leadership experience, having managed small teams of at least 2-3 engineers

Job Description Behind every investment is a person with ambitions, motivations and values. While we know that every client is unique, they come to Nutmeg for the same reason: our straightforward and transparent approach to investing. Nutmeg is a J.P. Morgan company offering award-winning investments, products and digital wealth management services to over 250,000 investors in the UK. We built the business from scratch, with constant innovation a core part of our ethos since the beginning. We aim to provide clients with the best digital investing experience, ensuring digital security and customer satisfaction - meaning you'll have the opportunity to make a real difference. As a Senior Lead Software Engineer at JPMorgan Chase within the International Consumer Bank division and Invest team, you will be one of the trusted technical authorities within the organisation. You will be a member of our architecture team, working embedded with our backend teams. You will be taking shared ownership of the long-term architectural vision of the platform, collaborating with team member contributors to evolve and simplify solutions. Job Responsibilities Architect, evolve and promote solutions. Advocate good practices and principles through documentation and training. Create alignment with stakeholders, both technical and non-technical. Be a trusted technical authority within your Product area and chapter. Required Qualifications, Capabilities and Skills Excellent architecture knowledge. Capable of design solutions meeting scalability, reliability and security requirements leveraging Microservice and Event-Driven architectures. Excellent knowledge of cloud environments (ideally AWS) and infrastructure-as-code (ideally Terraform) Excellent knowledge of testing and observability. Good knowledge of Java and its ecosystem. Good knowledge of Kafka and ecosystem, including Streams and Connect. Good knowledge of CI/CD pipelines and tools. Experience driving cross-function technical initiatives. Preferred Qualifications, Capabilities and Skills Experience with domain-driven design. Good writing skills, capable of producing supporting documentation. Project leading skills, capable of helping driving initiatives and strategies. Experience with Coaching and mentoring. Experience with other languages as Go, Kotlin and Python. About Us J.P. Morgan is a global leader in financial services, providing strategic advice and products to the world's most prominent corporations, governments, wealthy individuals and institutional investors. Our first-class business in a first-class way approach to serving clients drives everything we do. We strive to build trusted, long-term partnerships to help our clients achieve their business objectives. We recognize that our people are our strength and the diverse talents they bring to our global workforce are directly linked to our success. We are an equal opportunity employer and place a high value on diversity and inclusion at our company. We do not discriminate on the basis of any protected attribute, including race, religion, color, national origin, gender, sexual orientation, gender identity, gender expression, age, marital or veteran status, pregnancy or disability, or any other basis protected under applicable law. We also make reasonable accommodations for applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs. Visit our FAQs for more information about requesting an accommodation. About The Team Our professionals in our Corporate Functions cover a diverse range of areas from finance and risk to human resources and marketing. Our corporate teams are an essential part of our company, ensuring that we're setting our businesses, clients, customers and employees up for success.

Job Description Join JPMorganChase, a global leader in financial services, as we revolutionize our operations with artificial intelligence and machine learning. As a Software Engineer II at JPMorgan Chase within the AIML and Data Platforms (AMDP) team, you will be addressing significant challenges in the financial services sector and creating substantial impact. You will have the opportunity to work alongside industry leaders and contribute to pioneering AI/ML capabilities that solidify JPMC's industry leadership. Your crucial role in the LLM Suite within the AMDP team will involve transforming early-stage code into production-ready solutions and developing innovative AI/ML solutions using public cloud architecture. You will also collaborate with cross-functional teams to integrate generative AI into various applications and products. Job Responsibilities: Develop innovative AI/ML solutions and agentic systems for the LLM Suite platform using Azure, AWS, and AI Agentic frameworks. Integrate with AWS Cloud Services for compute, storage, databases, and security, as well as the Azure ecosystem. Create solutions or tools to provision and monitor infrastructure for LLM and agentic systems. Utilize operational skills to provide impactful recommendations for product, process, or policy improvements. Collaborate with the Product team to design, build, and deliver capabilities in agile sprints. Work with cross-functional teams, including data scientists, software engineers, and designers. Develop and implement state-of-the-art GenAI services leveraging Azure OpenAI models and AWS Bedrock service. Required Qualifications, Capabilities, and Skills: Formal training or certification on software engineering concepts and proficient applied experience Strong hands-on experience with at least one programming language (Python/Java/Rust) Experience in developing microservices using Python with FastAPI. Commercial experience in both backend and frontend engineering Hands-on experience with AWS Cloud-based applications development, including EC2, ECS, EKS, Lambda, SQS, SNS, RDS Aurora MySQL & Postgres, DynamoDB, EMR, and Kinesis. Strong engineering background in machine learning, deep learning, and neural networks. Experience with containerized stack using Kubernetes or ECS for development, deployment, and configuration. Experience with Single Sign-On/OIDC integration and a deep understanding of OAuth, JWT/JWE/JWS. Solid understanding of backend performance optimization and debugging. Knowledge of AWS SageMaker and data analytics tools. Proficiency in frameworks TensorFlow, PyTorch, or similar. Preferred Qualifications, Capabilities, and Skills: Familiarity with LangChain, Langgraph, or any Agentic Frameworks is a strong plus. Python engineering experience React About Us J.P. Morgan is a global leader in financial services, providing strategic advice and products to the world's most prominent corporations, governments, wealthy individuals and institutional investors. Our first-class business in a first-class way approach to serving clients drives everything we do. We strive to build trusted, long-term partnerships to help our clients achieve their business objectives. We recognize that our people are our strength and the diverse talents they bring to our global workforce are directly linked to our success. We are an equal opportunity employer and place a high value on diversity and inclusion at our company. We do not discriminate on the basis of any protected attribute, including race, religion, color, national origin, gender, sexual orientation, gender identity, gender expression, age, marital or veteran status, pregnancy or disability, or any other basis protected under applicable law. We also make reasonable accommodations for applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs. Visit our FAQs for more information about requesting an accommodation. About The Team Our professionals in our Corporate Functions cover a diverse range of areas from finance and risk to human resources and marketing. Our corporate teams are an essential part of our company, ensuring that we're setting our businesses, clients, customers and employees up for success.

£550-£600pd Outside IR35Remote - UK based applicants only6 months A leading eCommerce brand is looking for a Data Platform Engineer to play a key role in evolving their data ecosystem. This is an exciting opportunity to shape how data is built, governed, and leveraged across the business, supporting a platform that impacts millions of users daily. THE COMPANY This brand is recognised for its innovation and community-driven approach. With data at the heart of its decision-making, they're investing heavily in scalable, modern data platforms to enable better insights, experimentation, and product development. You'll join a collaborative engineering culture that values autonomy, technical excellence, and continuous improvement. THE ROLE As a Data Platform Engineer, you'll be responsible for developing and scaling the company's core data platform, ensuring teams across the business can access, trust, and use data effectively. You'll drive initiatives that improve data quality, observability, and governance, while helping shape a platform-as-a-product mindset. Key responsibilities include: Building and maintaining data infrastructure: Develop microservices, pipelines, and backend systems that power analytics and machine learning initiatives. Driving platform evolution: Design and implement scalable, secure, and efficient data services using tools such as Terraform, Docker, and AWS. Data governance and observability: Introduce and enhance tooling for data lineage, contracts, monitoring, and cataloguing. Operational excellence: Lead automation, monitoring, and incident response to maintain high platform reliability. Cross-functional collaboration: Work with data scientists, ML engineers, analysts, and product teams to understand and meet their data needs. Mentorship and culture: Support the growth of peers through knowledge sharing and by championing engineering best practices. YOUR SKILLS AND EXPERIENCE The successful candidate will have: Strong experience in Python and a solid foundation in software engineering best practices (testing, CI/CD, automation). Proven track record of designing, building, and scaling data platforms in production environments. Hands-on experience with big data technologies such as Airflow, DBT, Databricks, and data catalogue/observability tools (e.g. Monte Carlo, Atlan, Datahub). Knowledge of cloud infrastructure (AWS or GCP) - including services such as S3, RDS, EMR, ECS, IAM. Experience with DevOps tooling, particularly Terraform and CI/CD pipelines (e.g. Jenkins). A proactive, growth-oriented mindset with a passion for modern data and platform technologies. Nice to Have: Experience implementing data governance and observability stacks (lineage, data contracts, quality monitoring). Knowledge of data lake formats (Delta Lake, Parquet, Iceberg, Hudi). Familiarity with containerisation and streaming technologies (Docker, Kubernetes, Kafka, Flink). Exposure to lakehouse or medallion architectures within Databricks.

Backend Engineer 6 Month Contract Remote (UK) We're looking for a Backend Engineer (Junior-Mid Level) to join a small, agile team building a data and intelligence platform used by enterprise clients. You'll work on high-performance backend services, APIs, and data pipelines, collaborating closely with frontend developers and data specialists. This is a hands-on role that offers strong learning potential within a modern tech environment. Location: Remote (UK) Contract: 6 Month (OIR35, likely extension) Rate: £300-350 p/day Start: ASAP Key Skills: Experience with Python and modern frameworks such as FastAPI or Flask . Understanding of SQLModel / SQLAlchemy and relational database design. Knowledge of PostgreSQL and query optimisation. Extensive exposure to Celery Familiarity with AWS and CI/CD pipelines. (Bonus) Interest in data platforms, analytics, or cloud-native architecture (Bonus) Experience in data-heavy systems or B2B SaaS Key Responsibilities: Design, develop, and maintain backend services using Python and FastAPI to power a data and intelligence platform Build and optimise database models with SQLModel and SQLAlchemy. Integrate with PostgreSQL databases and external APIs. Contribute to feature development, testing, and deployment. Collaborate with the frontend and data teams to deliver scalable solutions Own features end-to-end - from understanding the business context to shipping and maintaining production code If you're interested, apply now for immediate consideration. Oscar Associates (UK) Limited is acting as an Employment Business in relation to this vacancy. To understand more about what we do with your data please review our privacy policy in the privacy section of the Oscar website.

Senior Frontend Developer 6 Month Contract (OIR35) Remote, UK based I'm working with a growing technology-led business that's scaling its engineering team and looking for an experienced Senior Frontend Developer to help deliver a next-generation data and intelligence platform. You'll play a key role in building performant, modern web applications that visualise complex data and integrate seamlessly with a Python/FastAPI backend. The team values clean, reliable, and maintainable code - so this is a great opportunity to make an impact in both product and technical decision Location: Remote (UK) Contract: 6 Months (likely extension) Rate: £350-450 p/day Start: ASAP Key Skills: Strong commercial experience with React and TypeScript . Experience deploying and managing applications in AWS . Strong understanding of API integration and data flow between backend and frontend. Solid grasp of SQL and data handling within the UI. Experience with testing frameworks (Jest, Cypress, React Testing Library). (Bonus) Familiarity with data visualisation libraries. (Bonus) Previous experience in data-heavy systems or B2B SaaS Key Responsibilities: Develop and maintain responsive frontend applications using React and TypeScript . Collaborate with backend engineers to integrate APIs (FastAPI, SQLModel, PostgreSQL). Optimise performance and scalability of frontend components for complex data workloads. Implement clean, reusable UI components and modern design patterns. Work closely with product and data teams to deliver user-friendly data visualisations. If you're interested, apply now for immediate consideration. Oscar Associates (UK) Limited is acting as an Employment Business in relation to this vacancy. To understand more about what we do with your data please review our privacy policy in the privacy section of the Oscar website.

Full Stack AI Software Engineer - Full Remote UK - £90,000 + Equity This role requires a software engineer with experience in implementing RAG pipelines and Vector Search (and hybrid AI searches, preferably). The client I am working with is an AI focused start-up backed by a £1.7M pre-seed investment. They are on a mission to streamline the deal making process, with the founders having had firsthand experience of the lengthiness and challenges of deal processes in the past. Their stack spans across back end, front end, data and crucially AI.This is a great opportunity for an entrepreneurial software engineer who wants to play a part in shaping the technical vision of this business and work on their product from an early stage. What you'll work on: Backend APIs (Python/FastAPI): Build and maintain secure, high-performance services that drive AI features and data access at scale. RAG & vector search: Design and improve retrieval pipelines (embeddings, chunking, hybrid search, ranking, feedback loops), owning schema design, latency, and relevance across vector databases. LLM integration: Connect and orchestrate large language models (OpenAI, Bedrock, etc.), manage prompts, tools, safeguards, and evaluation. Data pipelines: Ingest, clean, and transform structured and unstructured data; design efficient schemas (Postgres/NoSQL) for search and analytics. Frontend (React/Next.js): Deliver user-friendly, performant UIs that make AI-powered features (search, filters, explanations, citations) clear and accessible. Architecture: Shape a modular, scalable platform on AWS (ECS), separating ingestion, retrieval, reasoning, and delivery. Quality & reliability: Ensure reliability through testing, CI/CD, observability (metrics/tracing for LLM and retrieval paths), and performance optimisation. Collaboration: Partner with product and leadership teams, mentor peers, and play a role in shaping technical direction. Innovation: Explore and recommend new technologies, frameworks, and methods for both full-stack and AI development. Requirements: A motivated, hands-on engineer with an ownership mindset, strong communication skills, and a collaborative approach. 5+ years' experience in full-stack development. Strong background in RAG systems , vector databases (pgvector, FAISS, Weaviate, Elasticsearch k-NN), embeddings, and hybrid search methods. Practical knowledge of chunking strategies, indexing, precision/recall trade-offs, reranking, and evaluation techniques. Proficient in Python (FastAPI) and React/Next.js . Solid experience with both SQL and NoSQL databases (Postgres, DynamoDB, etc.). Exposure to LLMs, embeddings, and vector search APIs . Strong understanding of data engineering , schema design, ETL, and optimisation. Proficiency with cloud (AWS preferred) and containerised deployments (Docker, ECS). Knowledge of secure coding practices and managing sensitive data. Excellent communication, problem-solving, and leadership skills. Nice to have Experience with rerankers (e.g., cross-encoders), hybrid retrieval (SQL + vectors), query expansion, or lightweight knowledge graphs. Familiarity with LLM evaluation tooling (LangChain, LlamaIndex, OpenAI Evals) and observability for cost, relevance, and latency. Background in B2B data products or fintech. Applicants must be based in the UK with full right to work.

We are looking for a highly motivated Junior Backend Software Engineer (hybrid in London) to join an early stage technology company. This is a rare chance to join a startup at the very beginning - where your curiosity, ideas, and input will directly influence the product roadmap. You'll be working closely with a small, experienced engineering team, building real features in a modern codebase from day one. As a Junior Backend Software Engineer, you will be designing and implementing scalable, high-performance infrastructure services, APIs and integrations. You'll join a small and growing R&D team focused on building ambitious new products from the ground up. You'll work on real product features, contribute to design and development decisions, and grow your technical skillset by collaborating with a supportive team of experienced engineers. We're looking for someone who is excited to learn, ready to get stuck in, and is comfortable asking questions. You'll have space to grow, and we'll back you with the mentorship and feedback to make it happen. Some of the technologies we use, and day-to-day tasks include developing with: Relational databases (PostgreSQL, MySQL, etc.) OpenSearch DynamoDB S3 Event-driven architectures Third-party API integration Access control and user permissions Implementing APIs used by single-page applications WebSockets Infrastructure as code (AWS CDK, Terraform, etc.) Docker AWS IoT What we're looking for Circa 2 years of commercial or equivalent experience in a software development role building cloud-driven SAAS products, with a focus on building and maintaining infrastructure and backend services. Full stack experience with other languages and frameworks (e.g. React, Vue, iOS, Android) is a plus, but not required. Familiarity with modern backend frameworks and languages such as Golang, Java, C++, Rust, Python A solid academic background, ideally from a leading University with top marks in either Computer Science or STEM subjects demonstrating a passion for software development, coding and technology. Strong problem-solving skills and ability to work in a fast-paced startup environment. Excellent communication and collaboration abilities. Responsibilities Collaborate with cross-functional teams to define and deliver new features against tight milestones. Optimize code for performance, scale, reliability, and maintainability. Contribute to a culture of continuous improvement. Mayflower is acting as an Employment Agency in relation to this vacancy.

Role: Senior Software Engineer Locations: Gloucestershire Manchester London (Hybrid / Remote Options Available) Salary: 40,000 - 75,000 + Comprehensive Benefits Type: Full-time, Permanent PLEASE NOTE: This role requires UK citizenship and the ability to obtain high-level UK Security Clearance (typically requiring 10+ years of UK residency). Are you a skilled Software Engineer looking to apply your talents to mission-critical problems? Do you want to build secure, high-assurance systems that have a genuine impact on national security? On behalf of our client, a specialist UK technology company at the forefront of defence and cyber security innovation, we are seeking a talented Software Engineer to join their core team. This is an opportunity to work on innovative projects within a culture that blends enterprise-grade engineering with the agility of a start-up. The Role: As a Software Engineer, you will be integral to the design, development, and maintenance of secure, scalable software platforms for government and defence clients. You'll work within multi-disciplinary teams, contributing to the entire software lifecycle while upholding the highest standards of engineering and security. Key Responsibilities: Design, build, and maintain robust and secure software solutions. Collaborate with teams across cloud, data, and infrastructure domains. Contribute to all phases of the software development lifecycle. Uphold and advocate for strong engineering, testing, and security principles. Technology Exposure: You will have the opportunity to work with a modern and varied tech stack, including: Backend: Java, Python Frontend: TypeScript, React, Angular, Vue Cloud & Infrastructure: AWS, Azure, Docker, Kubernetes Data: Elasticsearch, Neo4J About You (The Ideal Candidate): A technically curious and adaptable software engineer with experience across modern technology stacks. Proven experience in software engineering; background in secure or regulated environments is highly desirable. A strong communicator who thrives in collaborative, high-autonomy teams. Must be a UK Citizen and eligible to obtain UK Security Clearance (which typically requires 10+ years of continuous residency in the UK). Desirable Experience: Previous work on Defence, Cyber Security, or Government projects. Understanding of secure software design principles. Experience in full-stack or cloud-native development. What's on Offer: In return for your expertise, you will receive a highly competitive package and unparalleled opportunities for growth in a critical sector. Generous pension with an 8% employer contribution. BUPA private health cover. Life insurance cover of 4x your salary. 25 days holiday + bank holidays, with the option to buy/sell up to 5 days. Electric Vehicle car scheme via salary sacrifice. EMI Share Scheme , giving you a stake in the company's success. 10 days of dedicated training allowance per year and a tailored career development plan. Flexible working hours and remote working options. Why Apply? This is more than just another software role. You will be working on projects with real national impact, using Innovative -edge technology to solve complex challenges. You'll join a fast-growing, people-first company that invests in its team, offering clear progression, fantastic benefits, and a supportive, flexible environment where your input truly matters.

Senior Software Engineer to help lead the technical evolution of this critical platform. The Opportunity You'll join a growing team building scalable, secure systems using React , Python , and AWS , helping to drive our mission to cut the impact of flooding in half.This is more than just building products - it's about delivering real-world impact through technology. What You'll Do Design, build, and deploy full-stack features across a modern cloud-native architecture Architect performant, secure systems that scale to meet growing demand Lead technical projects with high business impact, from concept to delivery Collaborate cross-functionally with Product, Data Science, and Operations teams Mentor developers, promote best practices, and improve engineering workflows Shape technical strategy and contribute to long-term system improvements Drive code quality, observability, and resiliency across services Tech Stack Frontend : React, JavaScript/TypeScript Backend : Python (FastAPI, Flask, or Django), ideally with geospatial data processing Cloud : AWS (Lambda, ECS, RDS, S3, API Gateway, etc.) DevOps : Docker, CI/CD pipelines, Git Orchestration : Airflow or similar tools Eligo Recruitment is acting as an Employment Business in relation to this vacancy. Eligo is proud to be an equal opportunity employer dedicated to fostering diversity and creating an inclusive and equitable environment for employees and applicants. We actively celebrate and embrace differences, including but not limited to race, colour, religion, sex, sexual orientation, gender identity, national origin, veteran status, and disability. We encourage applications from individuals of all backgrounds and experiences and all will be considered for employment without discrimination. At Eligo Recruitment diversity, equity and inclusion is integral to achieving our mission to ensure every workplace reflects the richness of human diversity.

Overview Join a collaborative, forward-thinking team that values creativity, experimentation, and impact-and help redefine the future of recruitment through intelligent,human-centered technology. We're looking for a talented and experienced Senior Fullstack Developer to play a pivotal role in the development and growth of a brand-new AI recruitment platformas it prepares to enter the market this summer. This is a rare opportunity to take a product from Beta launch to full market release and beyond, shaping its trajectory atevery stage. You'll be central to transitioning product development from an external agency to an in-house team, while driving technical excellence, user adoption, and long-terminnovation. This is a chance to build something meaningful from the ground up-within a startup-style venture backed by the strength and stability of an established business. Key Responsibilities End-to-end development of high-quality, scalable SaaS platforms from design through deployment and maintenance. Architect and implement robust backend services primarily using Python and PostgreSQL. Develop and maintain responsive, performant front-end applications with TypeScript and modern frameworks (e.g., NextJS, NodeJS). Collaborate with product owners, UX/UI designers, and other stakeholders to translate requirements into technical solutions. Champion agile ways of working, driving continuous improvement and deliver excellence. Integrate and optimize AI tools and APIs to enhance development productivity and platform capabilities. Provide technical mentorship and leadership to development teams, fostering best practices in coding, testing, and deployment. Participate in code reviews, architecture discussions, and system design decisions. Troubleshoot and resolve complex technical issues across the full stack. Ensure software security, scalability, and performance are maintained at all times. Keep abreast of emerging technologies and industry trends to inform strategic decisions. Skills and Experience Minimum 8 years of commercial software development experience, with at least 3 years in a senior or technical lead role. Proven expertise in full-stack development using: ? TypeScript (and JavaScript frameworks such as NextJS, Node, or Tailwind) ? Python (including frameworks like Django, Flask, or FastAPI) ? PostgreSQL and relational database design, optimisation, and maintenance. ? AI Development Tools such as Windsurf, Aider or Augment. Demonstrable experience building and scaling SaaS platforms in a production environment. Strong understanding and practical application of Agile software development methodologies. Hands-on experience integrating AI tools, APIs, or platforms into software solutions. Domain experience in Recruitment Technology, HRTech, or closely related fields is a must. Proficient in software architecture, microservices, RESTful API design, and cloud-native development (AWS, Azure, or GCP preferred). Experience with CI/CD pipelines, automated testing, and DevOps practices. Solid grasp of security best practices, data privacy, and GDPR compliance. Excellent communication skills, with the ability to work effectively across multidisciplinary teams and stakeholders. Strong problem-solving skills and a pragmatic approach to delivering solutions. Desirable Experience with containerisation and orchestration tools such as Docker and Kubernetes. Familiarity with event-driven architecture and message brokers (e.g., Kafka, RabbitMQ). Knowledge of front-end performance optimisation and accessibility standards. Exposure to machine learning pipelines or data engineering workflows. Prior experience working in startup environments or high-growth technology companies. Benefits Hybrid working as standard 25 days annual leave plus bank holidays Flexible holiday scheme Paid time off to move home Contributory pension scheme Enhanced family leave benefits Insurance benefits including life assurance Love Mondays events Discount scheme including gyms and popular retailers Range of wellbeing and mental health support avenues Office in a fantastic location, with countless bars, restaurants and theatres right on the doorstep.

Full Stack Engineer / Developer (TypeScript Elixir AWS) London / WFH to £100k Do you enjoy problem solving and working with a range of technologies including functional programming languages such as Elixir, using the right tool for the job? You could be progressing your career in a senior, hands-on Full Stack Engineer role at a successful and profitable energy trading market data scale-up. What's in it for you: Competitive salary, to £100k + Significant Equity Hybrid working (3 days London office per week) Vitality Healthcare Continuous career development and learning opportunities Influential role as part of a small, close knit team Complex and interesting work Your role: As a Full Stack Engineer you will take ownership, working on technically challenging Greenfield development projects. You'll be working on complex problems with scalability and reliability in mind, across the full development lifecycle from architecture and design through to implementation. There's a range of technology in the stack, you'll have a 50/50 split between backend and frontend development using TypeScript, Elixir, Elm and AWS amongst others, learning and picking new things up on the job in a collaborative, tech driven environment where you can get stuff done and see the results of your work. Location / WFH: You'll join the team in London three days a week in a hybrid work from home model. About you: You are degree educated in Computer Science or similar STEM discipline, having achieved a 2.1 or above from a Russel Group / Oxbridge or top 100 global university You are an experienced software engineer with a strong knowledge of best practices and Computer Science fundamentals and experience of delivering complex, data centric software You have advanced analytical and problem solving skills You're comfortable taking ownership of projects and mentoring more junior team members You have strong TypeScript skills, combined with any backend programming language (e.g. Python, Java, C++, C#) You're happy to work with the following tech stack (you don't need experience with all): Elixir, Ember, Elm, Phoenix, LiveView, Python, PostgreSQL, AWS, Docker You have an analytical mindset and enjoy problem solving You have experience of working in start-ups / SMEs and have good business acumen Ideally you will have a good understanding of financial markets Apply now to find out more about this Full Stack Engineer / Developer (TypeScript Full Stack Elixir) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.

Senior Software Engineer / Developer (Python FastAPI Data) London to £90k Are you a data centric Software Engineer with strong Python and SQL skills? You could be progressing your career in a senior, hands-on role at a fast growing, global Insurance Underwriting technology provider that focusses on developing a complex SaaS calculation platform for rapidly growing Cybersecurity insurance markets. As a Senior Software Engineer you will design and develop data centric backend services for the core platform with a focus on Python coding and building FastAPIs within an Azure environment with Databricks. You'll participate in the design and implementation of advanced mechanisms for data ingestion, transformation, mass parallel orchestration of network IO and will model data for a variety of purposes. You'll also collaborate with the Infrastructure Team to maintain Infrastructure as Code and develop new features on the engineering platform. Location / WFH: There's a hybrid work from home model with three days a week in the high spec London, City office with rooftop bar. About you: You have strong Python backend software engineering skills You have experience of building FastAPIs You have a good knowledge of public cloud services, they're using Azure but experience with AWS or GCP is fine You have experience of working with data at scale You have strong SQL skills (PostgreSQL, SQL Server and ideally Databricks, or happy to learn it) You have a thorough knowledge of Computer Science fundamentals including Data Structures, Design Patterns, OOP You're collaborative and pragmatic with great communication skills What's in it for you: As a Senior Software Engineer you will receive a competitive package: Salary to £90k + bonus 25 days holiday Private Medical Insurance (including dental and optical cashback) Life Insurance, Income Protection Pension Subsidised gym membership X4 paid volunteering days per year Season ticket loan Employee Assistance Programme Impactful role with great career progression Apply now to find out more about this Senior Software Engineer / Developer (Python FastAPI Data) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.

Full Stack Software Engineer (Python, React, AI, 3D) Hybrid London (1-2 days per week) Up to £120,000 + Equity + Benefits Are you excited by the idea of building the future of 3D and spatial intelligence? We're working with an innovative AI company developing a frontier 3D foundation model that's redefining how industries - from robotics and AR/VR to gaming and film - generate and interact with 3D content. They're now looking for a Full Stack Software Engineer to help build their first public-facing product, creating interactive applications powered by cutting-edge AI models. This is a rare opportunity to work at the intersection of AI, computer vision, and 3D computing , in a world-class technical team. Why this role? Shape the next generation of AI-driven 3D applications and spatial experiences. Work closely with researchers and engineers pushing the limits of spatial AI. Build the company's first large-scale public product - with full ownership across the stack. Hybrid flexibility: 1-2 days per week in the London office , balance the rest remotely. Salary up to £120,000 , depending on experience. ? What you'll be doing: Designing, building, and deploying interactive 3D web applications powered by Spatial AI models. Managing and optimising the inference stack for running complex AI models (in-house or via cloud providers). Developing internal tools to monitor, evaluate, and improve ML model performance. Working across the full stack - from front-end experiences to backend APIs and cloud deployment. Implementing best practices for performance, scalability, and security. ? What we're looking for: 2+ years' experience in full-stack application development and deployment. Strong skills in both frontend frameworks (React, Next.js, or Vue) and backend technologies (Node.js, Python, Django, or FastAPI). Experience deploying applications in cloud environments using containers and orchestration tools. Proficiency in the Python ecosystem for backend development and AI integration. Strong database knowledge (SQL and NoSQL) and API design/integration. Familiarity with CI/CD pipelines and modern DevOps workflows. Understanding of authentication, authorization, and web security best practices. ? Nice-to-haves: Experience deploying ML models using AWS Sagemaker, Hugging Face, or Replicate . Familiarity with WebGL, THREE.js , or other 3D graphics frameworks. Interest in AI, generative models, and spatial computing .

6-month contract Inside IR35 Up to £800 per day 2-3 days per week in London We're working with a global pharmaceutical company expanding its Responsible AI division. The team are building a next-generation Generative AI platform to accelerate drug discovery and safety evaluation. They're looking for a Backend Software Engineer to help design and develop backend systems supporting large-scale LLM and GenAI workloads. The role will focus on backend architecture, API integration, and automation across data and compute pipelines. What you'll be doing: Build and maintain Python backend systems for GenAI evaluation Integrate LLM components with data and compute infrastructure Deliver clean, well-tested, production-grade code (FastAPI preferred) Collaborate with ML engineers, data scientists, and DevOps teams Participate in agile delivery and CI/CD improvement initiatives Key Skills: Python, FastAPI, Cloud (GCP/AWS), CI/CD, Git/GitHub, automated testing, DevOps fundamentals Ideal for: Engineers with a strong backend foundation and hands-on GenAI or LLM integration experience looking to contribute to applied AI in healthcare.

Full Stack Engineer (Contract) - AI-Powered Prototypes Location: Remote - full right to work in the UK required Commitment: Full-time, 3-6 month contract Start Date: ASAP A key client of Sphere's ar an early-stage startup building an AI-native learning experience to help young adults develop essential life and career skills. Their first prototype focuses on communication - using AI to simulate real-world scenarios and deliver personalised feedback. Sphere are looking for a Full Stack Engineer to lead the build and delivery of monthly MVPs at this key client. If you're passionate about shipping fast, working at the intersection of learning and AI, and love iterating with users, this could be a great fit. What You'll Do Own end-to-end prototype delivery: Build, launch, and iterate on MVPs across front-end and back-end. Front end: Create clean, responsive web/mobile interfaces for interactive learning flows. Back end: Develop and manage APIs, data storage, and backend logic to support AI features and assessments. AI integration: Work closely with the technical lead to integrate third-party AI tools (LLMs, voice/video APIs, multimodal services). Ship fast, learn fast: Launch a new prototype every month, incorporating user and team feedback quickly. Infrastructure: Set up hosting, deployment pipelines, and lightweight QA/testing for small pilot releases. Collaborate cross-functionally: Work with learning strategists and designers to translate educational flows into working product experiences. Design with scalability in mind: While focused on prototypes, keep an eye on future productisation and technical debt. What They're Looking For Full stack capability: Strong experience with front-end frameworks (e.g. React, Next.js, React Native) and back-end systems (e.g. Node.js, Python). AI integrations: Hands-on experience integrating AI tools and services (e.g. OpenAI, Anthropic, LangChain, Pinecone, speech/video APIs). Prototype mindset: You've built MVPs in fast-moving environments and are comfortable with ambiguity. Cloud/data experience: Familiar with AWS, GCP, or Firebase; experience working with APIs and databases. Delivery focus: You can ship functional, reliable software quickly - with just enough polish for live testing. Strong communicator: You collaborate well with non-technical teammates, including educators and designers. Bonus Experience Working on edtech, coaching, or learning products. Media integration (video/audio). Building dashboards or data visualisations. Experience designing for or working with young adult users 16 years + Sphere Digital Recruitment is acting as an Employment Business in relation to this vacancy.