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Key Responsibilities Frontend Development Develop and maintain user-friendly interfaces using React.js and Next.js. Implement server-side rendering (SSR) and static site generation (SSG) with Next.js for optimized performance. Build efficient Technical Skills React.js & Next.js - Strong experience in building and optimizing React applications with Next.js. JavaScript & TypeScript - Proficiency in JavaScript (ES6+) and experience with TypeScript for type safety. State Management - Experience with Redux, practices, and performance standards.

Frontend Developer London, United Kingdom Posted 10 months ago This is a job posted by our partner Jooble. Tech stack GraphQL UI React TypeScript Frontend Qualifications Customer launches, and build a complex and constantly evolving UI and deliver performance improvement. You have worked heavily with TypeScript, React and GraphQL but have an attitude that using the right tool for the job is the best way to develop. Compensation £80K - 95K Role type Full time Visa sponsorship Not provided

This is a job posted by our partner Jooble Below is a snippet of the job description. To read the full text, please click on the "Apply Now" link. Requirements 2+ years of industry experience within a digital agency Experience with modern front-end frameworks such as Vue.js, TypeScript, or React Software Engineer, Nifty Gateway (Fullstack) 108 E 16th Street, New York, NY 10003 Subscribe to our newsletter Join over 111,000 others and get access to exclusive content, job opportunities and more!

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.

Location UK Employment Type Full time Location Type Remote Department Engineering EMEA Engineering Compensation L4-L5 (Staff - Sr Staff) - UK - London £138K - £224K • Offers Equity L4-L5 (Staff - Sr Staff) - UK - London £138K - £224K • Offers Equity Please read our Engineering Levels and Engineering Compensation resources to learn how we define levels and approach compensation across different locations. The posted range represents the typical compensation range for this role. To determine actual compensation we review the market rate of each candidate which can include a variety of factors including qualifications, experience, and location. Additional benefits are shared as part of the job posting. We're looking for a curious, rigorous, problem-hungry platform engineer (who codes!) to carry the ball as we bring Ashby to the big leagues. Ashby builds software that lets talent teams build an efficient, delightful, respectful hiring process. Similarly, you're an engineer who wants to build a "paved road" that excellent engineering teams can safely take to the moon and back. We have notable customers like Notion, Linear, Shopify, and Snowflake. Our growth and retention metrics are best-in-class among our peers: we have tens of millions in ARR, growing >100% year over year, over 2500 customers, very low churn, and many years of runway. We'll share more details once we meet, but you now probably have a good idea as to why we're hiring for this role . We've listed this role twice: as a Platform Engineer and Site Reliability Engineer - our team does both, and we are open to candidates who lean towards one or the other. About the role and how we work Hi I'm Colin, Head of EMEA Engineering. I've spent a number of years leading engineering teams in startups, and that has always included being close to infrastructure teams - no matter what name they've worn (SRE, infrastructure, platform, etc). I've got my hands dirty building the initial infrastructure for startups and know the value a talented infrastructure engineer brings. The rigour, the discipline, the peace and quiet when everything just hums along. Our infrastructure is in a good place for now. Nothing is static. Ashby continues to grow rapidly, putting strain on our existing infrastructure. We're always looking to give our customers more powerful hiring software, and building new product features often requires new pieces of infrastructure. Having herded plenty of snowflakeservers in the past, I've learned there's a better way. I (and Ashby) place a lot of value on infrastructure-as-code. As a Platform Engineer at Ashby, you'll get to dive into scaling problems, add new capabilities to our platform, and think about how our entire team interacts with infrastructure. All our own engineers own their projects end-to-end and ship with minimal oversight. We don't put roadblocks to ensure security when common sense will do and we don't build processes like change management boards around the lowest common denominator. But with great power comes great responsibility: we handle personal and confidential data about some of the biggest decisions we ever make at work. As we grow, more and bigger customers rely on us to be reliable and secure and how we operate internally will need to evolve. We're at an inflection point where our ability to scale and deliver a seamless experience has a make-or-break impact - we have some of the fastest growing companies using our platform every day to hire hundreds of people per month. We need someone like you to make good decisions, debug thorny issues, and build us a future-proof platform that can withstand this scale. Our small but mighty infrastructure team has set up a secure and simple environment (we don't believe in spinning up a new service unless necessary!) for our growing product team to build in. That's where you come in: you, too, will own projects end-to-end and have an impact on core parts of the Ashby developer and user experience. For instance, you could work on: Optimize our homegrown ultra-dynamic recruiting DSL-to-SQL compiler, and create tools to help developers do so Create automated guardrails for the security and privacy of our customer data Help our developers ship features fast through canary deploys, gradual rollouts and feature flags, while keeping complexity manageable and reducing downtime Work with the business and the engineering team to define SLOs and implement the corresponding SLIs. Ensure all communication with external services supports retries and circuit-breakers. Implement the infrastructure to support an event-driven architecture and data warehouse. We're looking for someone who can build systems that an engineer would like to work with: mature and boring but open-minded and approachable. We have to balance reliability with flexibility. Software and its availability are now mission critical to almost every working professional. To be in an SRE in today's world, you have to be extremely comfortable evaluating risk, those you take and those others take. Why you should or shouldn't apply You should apply if: You never stop. You get weirdly obsessed about a problem that doesn't yet make sense, turn it every which way in your head until the explanation dawns. You'll search every rock, inventory every clue, hunt every mismatch. We do that too - together we'll be armed with state-of-the-art monitoring tools and an impressive amount of data, and join you in the adventure. You don't take shortcuts. You're speaking up for the future user, the edge case, the doomsday design. You know product engineers want to build it with you, and see them as allies, where you give them the power and knowledge to access greater things. You're someone who cares about what you do and the team you do it with, and want to work with others who do as well. You'll be on interview panels choosing your next colleagues, and you'll take that seriously. You only want to work with people who make you better, and want to make you better. You've built infrastructure at a slightly later stage than Ashby is at - you know how to deal with millions of data points, have seen great (or not great) infrastructure make or break customer experience, and have automated everything from provisioning to monitoring and release process. You're a Swiss army knife (all nationalities welcome). You'll get every hard problem the company faces. You'll get to do infrastructure updates, security enforcements, database optimization, Kubernetes debugging, and digging through Typescript traces figuring out what doesn't work. You probably don't feel like an expert at at least some of that and that appeals to you. All that makes for a pretty specific kind of role, and the job isn't to everyone's tastes! You should not apply if: You don't want to make your own decisions on what is the best paved road to build for Ashby, and expect a lead or manager to make the final call on that. Our leads (and managers) give ample commentary and feedback on technical decisions and how they're made, but you ship what you want to build and are accountable for it. You hate SQL. We have a lot of features built around making the best out of data, and our platform engineers also sometimes dive into a gnarly report or advise engineers on a more performant data model to use. You don't want to code. Our SREs are some of our best software engineers and they are just as responsible for the application as the other engineering teams - albeit at a platform level. Reviewing code and submitting code changes will be part of your day to day. Your primary mode of communicating best practices to engineers is live meetings. We're a very async culture and written communication (and code) is how changes get made. As an Ashby SRE, you will need to share new tooling and best practices with engineers faster than your next meeting opportunity will take you. You've never delivered a project, on your own, without someone prodding you for updates. We have no project or delivery managers to fill your calendar with busy work, but the flip side is you have to do your project management, seek the help you need to get unstuck and cut scope when it's worthwhile. Technology Stack We share our tech stack with the caveat that we don't require previous experience in it: TypeScript (frontend & backend), Node.js, React, Apollo GraphQL, Postgres, Redis. We use Datadog and Sentry on 100% cloud-based (AWS) infra. We take developer experience and reliability seriously: all engineers are on call in a follow-the-sun model, and everyone contributes to developer tooling. What We're Building As engineers, we are used to tooling that makes us better at what we do. When we started Ashby, we saw the opposite with Talent Acquisition software. Recruiting teams were leveling up how they did their work, but instead of software meeting this new standard, it held them back. Scheduling a final round is an excellent example. Recruiting teams wanted to schedule candidates faster, track interviewer preparation and quality, and do it with half the headcount. A recruiter needed to manually collect availability from the candidate, identify qualified interviewers, perform "Calendar Tetris" to find who is available to interview the candidate, schedule on the earliest date possible, and make any last-minute adjustments as availability changed. They must do this while considering the interview load on each individual and whether interviewers need to be trained and shadowing others. TA software didn't help. As hiring managers . click apply for full job details

About StackOne: StackOne is the AI Integration Gateway for SaaS products and AI Agents. Backed by GV and Workday Ventures ($24M raised), we help builders of SaaS platforms and AI Agents orchestrate hundreds of scalable, accurate, and enterprise-grade integrations. Our platform combines 25,000 pre-mapped actions on 200 connectors, an AI-powered integration development toolkit, plus security by design: a real-time architecture, managed authentication and permissions, and end-to-end observability. Join us on our fast trajectory to build the future of agentic integrations. Why this role exists StackOne's product experience is our brand. As our first dedicated UX Engineer you will be the in-house authority on taste, polish, and performance. You will own the component library, shape our micro-frontend architecture, and ensure that every pixel, motion, and millisecond of latency makes customers feel like they're using the best-engineered platform on the market. What you'll do 80 % Front-end craft & design systems 20 % API-aware performance engineering Collaborate with our Designer to define & steward our design system - set the visual language, build reusable primitives, and maintain libraries that power every StackOne user interfaces. Ship pixel-perfect UIs - React (primarily) plus; own theming, performance, and thoughtful motion. Make performance a feature - instrument Core Web Vitals, budget bundle sizes, optimise hydration patterns, and chase performance where it matters. Provide and maintain internal tooling as well as AI rules to allow every technical team to contribute to the front-end while aligning with the best practices you will help set. Prototype & validate - turn product ideas into interactive proofs-of-concept that help PMs and designers converge on the right solution fast. Champion taste & detail - host design-quality critiques, stamp out visual debt, and be the go-to voice when "good enough" isn't. What you'll bring Must-haves 4+ yrs professional front-end engineering with a portfolio that focus on the details. React & TypeScript at production scale; comfortable with hooks, suspense, and server components. Deep CSS fluency (Tailwind or equivalent) and experience of modern browser APIs. Proven track record building or migrating component libraries/design systems. Strong performance tuning instincts: Lighthouse, Core Web Vitals, bundle analysis, code-splitting. Familiarity with monorepo tooling (NX or Turborepo) and micro-frontend patterns. Ability to dive into back-end code (Node, React-router, sveltekit) to remove perf bottlenecks, instrument metrics, or adjust API shape. Nice-to-haves Svelte, Web Components, or other framework experimentation. Experience with auth flows (OAuth2, OpenID Connect) and secure front-end patterns. Web Motion & animation chops Prior work on B2B developer tools or dashboards at seed-to-Series-B stage. Why Join Us? Meaningful share options (EMI) - share in the company's success as we grow 25 days holiday + 1 additional day per year of tenure Private health insurance - including dental & optical £15/day lunch budget when working from our London office, up to £120/month £1,000 for your home office set up + £500/year top-up Annual team offsite to sunny spots (last ones were in Spain and Portugal) Join one of Europe's fastest-growing startups Work with a veteran team of ex-employees of Google, Microsoft, Oracle, Coinbase, JP Morgan and more Health, fitness and gift card discounts Cycle2Work and Electric Cars scheme Hybrid work set up - typically 2 days in the office We believe diversity drives innovation. We encourage individuals from all backgrounds to apply. As an equal-opportunity employer, we celebrate diversity and are committed to creating an inclusive environment for all employees.

Company Overview Eeze is a leading innovator in the iGaming industry, specialising in the design, development, and delivery of live casino games. As we expand our operations in the European market, we are committed to pushing the boundaries of gaming experiences, offering cutting edge, immersive live casino games that are tailored to the unique needs of our clients and their audiences. Our work culture promotes collaboration, creativity, and innovation, all while encouraging a startup mindset. Role Overview We are looking for a passionate and skilled Senior Frontend Developer to join our talented development team. Key Responsibilities Design, develop, and maintain complex web applications using modern JavaScript framework such as TypeScript, REACT and Redux. Build responsive, scalable, and high-performance user interfaces that handle real-time data and low latency interactions. Collaborate with backend developers to integrate APIs and WebSocket-based communication for real time data updates. Work with cross functional teams, including product owners, product analysts, UI/UX designers, and QAs, to deliver features that enhance user experience and meet business requirements. Optimise applications for maximum speed, scalability, and performance, ensuring the best possible user experience. Stay updated with the latest frontend technologies, tools, and industry trends, and apply them where appropriate. To mentor team members in junior level with delegated tasks. To review their codes and provide guidance when necessary. Qualifications & Skills 5+ years of experience in web application development. Proficient in TypeScript, React and Redux for building dynamic and complex user interfaces. Strong experience with real time applications or low latency systems, ideally within the iGaming or gaming industry. In depth experience working with WebSockets and protobuf. Understanding of frontend performance optimisation, especially in real time data environments. Strong knowledge of HTML5, CSS3, Node.js, and JavaScript frameworks. Strong problem solving and analytical skills. Good communication skills with various stakeholders. Knowledge of using Gitlab / Github for version control would be an added advantage. Knowledge of EGRET would be an added advantage. Able to read and write Chinese language.

The energy transition is the biggest infrastructure buildout in human history. Modo Energy is the data platform at the centre of it. We build the benchmarking, forecasting, and valuation tools that the world's most serious energy investors, developers, and operators depend on to make decisions. If a battery gets financed, built, or traded anywhere in the world, there's a good chance Modo data was in the room. Founded in 2019, we're 75+ people across London, New York, Sydney, and Madrid; $30M Series B, AI-native, and moving fast. This is a rare chance to join a category-defining company at the moment it's scaling globally. The Role We seek a Frontend Engineer to help lead the architectural evolution of our UI. As part of a team, your main goal is to build a frontend architecture that supports rapid, AI-assisted development. We are AI-native and our tech stack is TypeScript, React, and Next.js in a modern monorepo architecture, designed to support rapid feature development and AI-assisted engineering workflows. We are looking for individuals who love product-building and want to work with pace at a mission-oriented start-up. Responsibilities Architectural Strategy: help with the technical direction for our frontend monorepo to ensure long-term scalability. Component System Architecture: help design and develop our internal UI library (based on MUI). Performance Engineering: help build and improve high-performance, low-latency user interfaces. 5+ years of professional experience in Frontend Development. Experience with Material UI (MUI) or similar component libraries. Testing principles and experience with frameworks like Jest and Cypress or Playwright. An eye for design (UI/UX): Ability to build polished, aesthetically pleasing interfaces and bridge the gap between design and engineering. Proficient with Git, Docker, and CI/CD workflows. Familiarity with Monorepo structures and tools (e.g., Turborepo, Yarn Workspaces). Bachelor's/Master's degree in Information Technology, Computer Science, or equivalent experience. Any start-up / scale-up experience is beneficial. Familiarity with Python is advantageous. Any experience of the energy sector is highly desirable. Salary & Benefits Equity Share Scheme Private top-tier Healthcare and Dental coverage with Bupa, Salary sacrifice pension with 3% employer contribution; 25 days annual leave (excluding bank holidays), plus 5 flexible days to be taken on a Monday or a Friday. A great social scene, company nights out, outdoor events, networking events, and lots of snacks and drinks - obviously! The salary range listed reflects industry benchmarks for this role. Modo Energy's policy is to pay top of personal market - if you're exceptional, we'll make it work. We want the best engineers! NOTE: Hybrid Work Environment. We are all in-office days Tuesday, Wednesday & Thursday, and we are based by Euston Square. Modo Energy is an equal opportunity employer. Employment decisions are made on the basis of qualifications, merit, and business need. We do not discriminate on the basis of age, national origin, physical or mental disability, race, religion, pregnancy, sexual orientation, gender identity, veteran status, or any other characteristic protected under applicable UK law, including the Equality Act 2010. What You Can Expect From Us At Modo Energy, we believe that exceptional work deserves exceptional reward. We're a high-performance team; ambitious, collaborative, and genuinely motivated by the scale of what we're trying to build. You'll have real ownership from day one, work alongside some of the brightest people in the industry, and be part of a company that's defining a new category in the global energy market. We're hybrid: everyone works Tuesday to Thursday in office, with Monday and Friday flexible. We offer top-of-market compensation, equity for every employee, and the space to take your career wherever you want it to go. We're looking for people who want to do the best work of their careers. If that's you, we want to talk. If you require assistance or a reasonable accommodation during the application or interview process, please contact us at

Senior Frontend Engineer (Full-time) Department: Digital, Data and Cloud Version 1 has celebrated over 26 years in Technology Services and continues to be trusted by global brands to deliver solutions that drive customer success. Our expertise enables our customers to navigate the rapidly changing Digital-First world we live in. We foster strong partnerships with leading technology giants including Microsoft, AWS, Oracle, Red Hat, OutSystems, and Snowflake, ensuring that our customers are provided with the highest quality solutions and services. We're an award-winning employer reflecting how our employees are at the very heart of Version 1 and what we do: UK & Ireland's premier AWS, Microsoft & Oracle partner. 3400+ strong, 350/£300m revenue business. 10+ years as a Great Place to Work in Ireland & UK. Best Workplace for Women in the UK & Ireland by GPTW. Best Workplace for Wellbeing in the UK by GPTW. We're a core values driven company, we hire people who share our values, and we reward those who display and foster them, it's deeply embedded within our DNA. Invest in us and we'll invest in you! Job Description As a Front End Developer, you'll collaborate closely with Product Owners, Business Analysts, Technical Architects, UX/UI Designers and other team members to understand business requirements and drive the solution design and development of our digital products. Your role involves ensuring that the code aligns with these requirements and adheres to our architectural and front end coding standards. Performance optimisation is key, and you'll employ best practices to enhance our applications. Additionally, you'll stay proactive by suggesting upgrades and updates to maintain modern security standards and adhere to evolving best practices in development. Your contributions extend beyond individual projects; you'll help enrich our shared component libraries by crafting modular and reusable components. Furthermore, as a valued member of our team, you'll provide mentorship to junior members and actively share your expertise across the wider team. Responsibilities Experience working closely with key stakeholders across the engineering team, including Architects, Product Owners and UX designers understanding and demonstrating how written requirements translate into a technical solution. Develop interfaces for web and mobile applications and develop high-quality, efficient, reusable code and libraries for future use. Collaborate with other team members to formulate and articulate end-to-end architecture and (non ) functional design. Responsible to take ownership of the Frontend digital and software platform. Ensure the use of Version 1's Agile process and framework. Instill champion best practices within the team, including TDD, code reviews and pair programming. Mentor and bring on junior members of the team. Design flexible and configurable software components. Produce well designed, testable, maintainable, secure and efficient code. Qualifications Extensive background in front end development with significant experience working with TypeScript and React. Any further experience with Next.js/Angular/Vue.js is beneficial. Experience with mobile development frameworks like React Native is beneficial. Experience with GraphQL, preferably using Apollo Client with React for efficient data fetching and state management. Experience in Unit Testing with Jest. Continuous Integration experience (Docker). A passion for coding and keeping up to date with new technologies, frameworks and techniques. Extensive experience in an Agile environment. Exceptional communication skills to interact with clients and onsite and near shore development teams. Ability to prioritise and handle several tasks at once with multiple deadlines will be important. Experience in back end integration and any experience with backend technologies like Java/Python is an advantage. Additional Information Share in our success with our Quarterly Performance-Related Profit Share Scheme, where employees collectively benefit from a share of our company's profits. Strong Career Progression & mentorship coaching through our Strength in Balance & Leadership schemes with a dedicated quarterly Pathways Career Development programme. Flexible/remote working, Version 1 is tremendously understanding of life events and people's individual circumstances and offer flexibility to help achieve a healthy work life balance. Financial Wellbeing initiatives including Pension, Private Healthcare Cover, Life Assurance, Financial advice and an Employee Discount scheme. Employee Wellbeing schemes including Gym Discounts, Bike to Work, Fitness classes, Mindfulness Workshops, Employee Assistance Programme and much more. Generous holiday allowance, enhanced maternity/paternity leave.

Do you want to do work that matters, alongside supportive leaders who will help you grow faster than you ever thought possible? Are you a creative problem solver who is energized by challenges? You've come to the right place. YOUR IMPACT As a Software Engineer, you will collaborate with a global network of technologists, designers, and strategists to help clients transform their businesses through innovative digital solutions. In this hands on role, you'll develop cutting edge products, mentor client teams, and shape engineering cultures while growing your expertise across diverse industries and technologies. In this role, you will work hands on with clients across industries to bring their digital ambitions to life. You will develop software products and services from the ground up while coaching and mentoring client teams on engineering best practices, user centric design, and Agile values. By co creating with clients and their leadership, you'll help build not only cutting edge products but also the technical capabilities and cultures needed to sustain them. Your work will drive meaningful change for clients and their industries. You will participate in cross functional problem solving sessions with client leaders, shape their digital strategies, and deliver solutions that go beyond the product itself. Your efforts will help clients build scalable teams and engineering cultures that enable long term success. You will collaborate with clients across industries to turn their digital ambitions into reality through hands on technical expertise. Based in one of our global locations, you will be part of QuantumBlack AI by McKinsey, a multidisciplinary group of software engineers, AI engineers, data scientists, and technology consultants passionate about creating industry shaping products and tools. At McKinsey, you'll grow as a technologist and leader, work across diverse industries and technologies, and enjoy opportunities to contribute to digital strategies, build impactful products, and mentor others. YOUR GROWTH Continuous learning: Our learning and apprenticeship culture, backed by structured programs, is all about helping you grow while creating an environment where feedback is clear, actionable, and focused on your development. The real magic happens when you take the input from others to heart and embrace the fast paced learning experience, owning your journey. A voice that matters: From day one, we value your ideas and contributions. You'll make a tangible impact by offering innovative ideas and practical solutions, all while upholding our unwavering commitment to ethics and integrity. We not only encourage diverse perspectives, but they are critical in driving us toward the best possible outcomes. Global community: With colleagues across 65+ countries and over 100 different nationalities, our firm's diversity fuels creativity and helps us come up with the best solutions for our clients. Plus, you'll have the opportunity to learn from exceptional colleagues with diverse backgrounds and experiences. World class benefits: On top of a competitive salary (based on your location, experience, and skills), we provide a comprehensive benefits package to enable holistic well being for you and your family. YOUR QUALIFICATIONS AND SKILLS Undergraduate or master's degree; or equivalent experience. 2 5+ years of experience developing full stack applications by writing code that is readable, testable, maintainable, and scalable. Demonstrated experience working collaboratively with other developers, as well as technical and non technical people within software teams. Hands on experience and willingness to learn across frontend (TypeScript, React, Angular, Vue, Next.js, Tailwind), backend (Python, Node.js, Java/Spring, C#/.NET), and databases (SQL, NoSQL, vector databases, ETL). Experience with LLM frameworks, prompt orchestration, agent frameworks, MCPs, evaluation frameworks, and cloud platforms (Azure, AWS, GCP), including Docker and CI/CD. Strong focus on automated testing, logging, monitoring, and overall system reliability. Experience working in Agile teams, including active participation in sprint ceremonies. Experience pair programming collaboratively with other developers. Exceptional time management to meet your responsibilities in a complex and largely autonomous work environment. Strong communication skills, both verbal and written in English, with the ability to adjust your style to suit different perspectives and seniority levels. FOR U.S. APPLICANTS: McKinsey & Company is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by applicable law. FOR NON U.S. APPLICANTS: McKinsey & Company is an Equal Opportunity employer. For additional details regarding our global EEO policy and diversity initiatives, please visit our McKinsey Careers and Diversity & Inclusion sites.

Eeze Entertainment Malta Limited is seeking a Senior Frontend Developer in Greater London. The role involves designing and developing complex web applications using TypeScript, React, and Redux. Candidates should have over 5 years of experience, strong skills in real-time applications, and knowledge of WebSockets. The position offers a collaborative environment that promotes creativity and innovation. Good communication skills and ability to read/write Chinese are advantageous.

About StackOne: StackOne is the AI Integration Gateway for SaaS products and AI Agents. Backed by GV and Workday Ventures ($24M raised), we help builders of SaaS platforms and AI Agents orchestrate hundreds of scalable, accurate, and enterprise-grade integrations. Our platform combines 25,000 pre-mapped actions on 200 connectors, an AI-powered integration development toolkit, plus security by design: a real-time architecture, managed authentication and permissions, and end-to-end observability. Join us on our fast trajectory to build the future of agentic integrations. Why this role exists StackOne's product experience is our brand. As our first dedicated UX Engineer you will be the in-house authority on taste, polish, and performance. You will own the component library, shape our micro-frontend architecture, and ensure that every pixel, motion, and millisecond of latency makes customers feel like they're using the best-engineered platform on the market. What you'll do 80 % Front-end craft & design systems 20 % API-aware performance engineering Collaborate with our Designer to define & steward our design system - set the visual language, build reusable primitives, and maintain libraries that power every StackOne user interfaces. Ship pixel-perfect UIs - React (primarily) plus; own theming, performance, and thoughtful motion. Make performance a feature - instrument Core Web Vitals, budget bundle sizes, optimise hydration patterns, and chase performance where it matters. Provide and maintain internal tooling as well as AI rules to allow every technical team to contribute to the front-end while aligning with the best practices you will help set. Prototype & validate - turn product ideas into interactive proofs-of-concept that help PMs and designers converge on the right solution fast. Champion taste & detail - host design-quality critiques, stamp out visual debt, and be the go-to voice when "good enough" isn't. What you'll bring Must-haves 4+ yrs professional front-end engineering with a portfolio that focus on the details. React & TypeScript at production scale; comfortable with hooks, suspense, and server components. Deep CSS fluency (Tailwind or equivalent) and experience of modern browser APIs. Proven track record building or migrating component libraries/design systems. Strong performance tuning instincts: Lighthouse, Core Web Vitals, bundle analysis, code-splitting. Familiarity with monorepo tooling (NX or Turborepo) and micro-frontend patterns. Ability to dive into back-end code (Node, React-router, sveltekit) to remove perf bottlenecks, instrument metrics, or adjust API shape. Nice-to-haves Svelte, Web Components, or other framework experimentation. Experience with auth flows (OAuth2, OpenID Connect) and secure front-end patterns. Web Motion & animation chops Prior work on B2B developer tools or dashboards at seed-to-Series-B stage. Why Join Us? Meaningful share options (EMI) - share in the company's success as we grow 25 days holiday + 1 additional day per year of tenure Private health insurance - including dental & optical £15/day lunch budget when working from our London office, up to £120/month £1,000 for your home office set up + £500/year top-up Annual team offsite to sunny spots (last ones were in Spain and Portugal) Join one of Europe's fastest-growing startups Work with a veteran team of ex-employees of Google, Microsoft, Oracle, Coinbase, JP Morgan and more Health, fitness and gift card discounts Cycle2Work and Electric Cars scheme Hybrid work set up - typically 2 days in the office We believe diversity drives innovation. We encourage individuals from all backgrounds to apply. As an equal-opportunity employer, we celebrate diversity and are committed to creating an inclusive environment for all employees.

Full Stack .NET Developer (x3) Location: Leeds (1 day per month onsite) Rate: £500 per day Engagement: Contract IR35 Status: Inside IR35 Start Date: ASAP Duration: Initial 3 months Overview We're supporting a major NHS digital transformation programme and are looking for three experienced Full Stack .NET Developers. You will be working on the development and enhancement of critical healthcare applications, helping deliver scalable, secure, cloud native solutions that directly support NHS services and patient outcomes. This is an excellent opportunity for developers who enjoy working across the full stack, with a strong Microsoft technology background and modern front end expertise. Key Responsibilities Design, develop and maintain enterprise grade applications using .NET technologies Build and enhance responsive front end applications using React and TypeScript Develop secure RESTful APIs and backend services Work within Azure native environments, leveraging cloud first architecture principles Collaborate with Product Owners, Architects, DevOps and QA teams in Agile delivery squads Contribute to technical design, code reviews and continuous improvement initiatives Ensure solutions meet NHS security, governance and compliance standards Support CI/CD pipelines and modern DevOps practices Essential Skills & Experience Backend Strong commercial experience with: C# .NET / .NET Core ASP.NET Core REST API development SQL Server Frontend Strong experience with: React TypeScript JavaScript HTML5 CSS3 Cloud & DevOps Strong Azure experience CI/CD pipelines Infrastructure and deployment best practices Apply now or email for more information.

Requirements: We are looking for a Frontend Developer with strong proficiency in React and TypeScript. Solid experience with modern JavaScript and familiarity with frontend tooling such as Vite, Webpack, ESLint, and Prettier. An understanding of REST APIs, client-side development, and cross-browser compatibility. Previous experience working in Agile teams is a plus. Bonus points if you have experience with Next.js or component libraries like Material UI or Tailwind. Responsibilities: In this role, you will develop and maintain web applications

A tech firm in Manchester is seeking a Frontend Developer proficient in React and TypeScript. This role involves developing and maintaining web applications, requiring solid experience with modern JavaScript and frontend tools. Experience in Agile environments is a plus, along with familiarity with Next.js or component libraries like Material UI or Tailwind. This opportunity offers competitive compensation and growth potential.