1 to 25 of 216 Permanent Front-End Developer (Client-Side Developer) Jobs in London

We are a global digitalconsultancy specialising in AI, cloud, data, and digital product engineering ,delivering transformation at scale for clients in the UK, EU, and NorthAmerica. Our front-end developers are integral to our mission of deliveringseamless user experiences while maintaining technical excellence andoperational efficiency. Requirements Key Responsibilities Lead the development of complex user interfaces using … management strategies in alignment with our design systems andcoding standards. Collaborate closely with UX/UI designers totransform Figma prototypes into pixel-perfect, responsive web interfaces. Integrate front-end applications with RESTful APIsand GraphQL endpoints, ensuring robust data handling and error management. Participate in code reviews , provideconstructive feedback, and uphold high standards of code quality and … in applications, ensuring optimal load times and responsiveness acrossdevices. Mentor and support junior developers within theteam, fostering a culture of knowledge sharing and continuous improvement. Contribute to front-end build tooling and CI/CDpipelines , ensuring efficient developer workflows. Ensure compliance with accessibility (WCAG)standards across all interfaces. Proactively participate in sprint More ❯

We’re looking for a Senior Frontend Developer who’s passionate about building beautifully crafted, high-performance user interfaces. You’ll play a key role in shaping the user experience of innovative software solutions, working closely with backend developers and data scientists to bring complex ideas to life. We’re looking for someone who thrives on … user-friendly interactions and interfaces using tools such as Figma Facilitate UX/UI requirements elicitation sessions with clients Interact with RESTful APIs for seamless communication between front-end and back-end systems Deliver high-quality code and successful project outcomes Provide mentorship to other software engineers Stay updated with the latest advancements in More ❯

Join to apply for the Front-End Developer role at SoftBlues Join to apply for the Front-End Developer role at SoftBlues The eCommerce Front-end Developer (AB Testing, EV Squad) is responsible for delivering front-end solutions in alignment with technical and branding guidelines, especially (but not exclusively) in the domain of front-end personalization and AB Testing, consistently enforcing those guidelines and supporting other developers in doing so, and, occasionally, leading the implementation of commercially driven and innovative digital experiences, in line with strategy and brand … Support the definition of our technical guidelines and the assessment of new technologies, techniques, ways of working, best practices, etc... Support the development and evolution of our front-end personalization rules engine (Casper) and report back to the team, other HQ eCommerce stakeholders and local (market-level) stakeholders on new features, best practices/usage, risks More ❯

Founding AI Frontend Developer | naptha.ai About the role: We are seeking a talented frontend developer to join our team as a founding member, focusing on rapidly developing and deploying dynamic user interfaces for products built on our custom multi-agent system stack. This role involves creating intuitive, responsive, and powerful interfaces that … Job function Job function Engineering and Information Technology Industries Software Development Referrals increase your chances of interviewing at Naptha AI by 2x Get notified about new Frontend Developer jobs in London, England, United Kingdom . London, England, United Kingdom 4 months ago London, England, United Kingdom £90,000 - £130,000 1 month ago Software Engineer - Python … Container Images London, England, United Kingdom 1 month ago London, England, United Kingdom 3 weeks ago Remote Senior Frontend Developer (m/w/d) - Vaadin/GWT (Google Web Toolkit)/Apache Wicket London, England, United Kingdom 4 days ago Software Engineer - Blockchain Data (fully remote) London, England, United Kingdom 3 days ago London, England More ❯

revolutionising the financial industry with cutting-edge technology solutions. Their innovative platform is designed to empower individuals and businesses by providing seamless financial services. As a Senior Front-End Developer, you will play a pivotal role in shaping the company's products and driving the development of our user interfaces. You will … work closely with cross-functional teams to deliver high-quality front-end solutions that enhance the user experience and drive business growth. This role also presents an excellent opportunity for someone who aspires to move into a leadership position within the organisation. Responsibilities: Collaborate with product managers, designers, and back-end engineers to develop … user-friendly, responsive front-end applications. Build robust and scalable web applications using React, ensuring the highest standards of performance, security, and usability. Participate in the full software development life cycle, from requirements gathering to deployment and maintenance. Identify and resolve technical challenges, optimising front-end performance and improving user interfaces. Mentor More ❯

revolutionising the financial industry with cutting-edge technology solutions. Their innovative platform is designed to empower individuals and businesses by providing seamless financial services. As a Senior Front-End Developer, you will play a pivotal role in shaping the company's products and driving the development of our user interfaces. You will … work closely with cross-functional teams to deliver high-quality front-end solutions that enhance the user experience and drive business growth. This role also presents an excellent opportunity for someone who aspires to move into a leadership position within the organisation. Responsibilities: Collaborate with product managers, designers, and back-end engineers to develop … user-friendly, responsive front-end applications. Build robust and scalable web applications using React, ensuring the highest standards of performance, security, and usability. Participate in the full software development life cycle, from requirements gathering to deployment and maintenance. Identify and resolve technical challenges, optimising front-end performance and improving user interfaces. Mentor More ❯

Join to apply for the Senior Frontend Developer role at Applied Data Science Partners Join to apply for the Senior Frontend Developer role at Applied Data Science Partners We’re looking for a Senior Frontend Developer who’s passionate about building beautifully crafted, high-performance user interfaces. You … user-friendly interactions and interfaces using tools such as Figma Facilitate UX/UI requirements elicitation sessions with clients Interact with RESTful APIs for seamless communication between front-end and back-end systems Deliver high-quality code and successful project outcomes Provide mentorship to other software engineers Stay updated with the latest advancements in … Partners by 2x Sign in to set job alerts for “Frontend Developer” roles. Romford, England, United Kingdom 2 weeks ago Front End Developer (Remote Fixed Term Contract) London, England, United Kingdom 1 month ago London, England, United Kingdom 2 weeks ago London, England, United Kingdom 4 months ago More ❯

Senior Lead Software Engineer - Front-End Developer Join to apply for the Senior Lead Software Engineer - Front-End Developer role at JPMorganChase Job Description Be an integral part of a team that's constantly pushing the envelope to enhance, build, and deliver top-notch More ❯

and delivering autonomous AI teams that work alongside humans to solve real-world problems. As we continue to expand our product offerings, we are seeking a talented Front-End Developer to help shape the future of human-AI collaboration. In this role, you'll build intuitive dashboards that allow users to configure … interfaces to solve one of the AI era’s biggest challenges: making complex systems usable through powerful, non-chat user experiences. Key Responsibilities Develop, maintain, and optimize front-end components for modern web applications Implement responsive, mobile-friendly designs that ensure cross-platform compatibility Translate wireframes and prototypes into polished, production-ready applications in collaboration with … UX/UI designers Integrate front-end interfaces with REST and GraphQL APIs, as well as back-end systems Ensure high-quality, maintainable code through testing, debugging, and adherence to best practices Stay current with emerging UI/UX technologies to continuously improve the user experience Participate in agile development processes, including Test Driven More ❯

and delivering autonomous AI teams that work alongside humans to solve real-world problems. As we continue to expand our product offerings, we are seeking a talented Front-End Developer to help shape the future of human-AI collaboration. In this role, you'll build intuitive dashboards that allow users to configure … interfaces to solve one of the AI era’s biggest challenges: making complex systems usable through powerful, non-chat user experiences. Key Responsibilities Develop, maintain, and optimize front-end components for modern web applications Implement responsive, mobile-friendly designs that ensure cross-platform compatibility Translate wireframes and prototypes into polished, production-ready applications in collaboration with … UX/UI designers Integrate front-end interfaces with REST and GraphQL APIs, as well as back-end systems Ensure high-quality, maintainable code through testing, debugging, and adherence to best practices Stay current with emerging UI/UX technologies to continuously improve the user experience Participate in agile development processes, including Test Driven More ❯

Front End Developer/Engineer (TypeScript React Native AI) London/WFH to £65k Want to work on intellectually and technically challenging AI systems at the cutting edge of what is possible, whilst learning and collaborating with an amazing team and enjoying flexible working and a range of other perks? You could … be progressing your career as a Front End Developer at a well-established AI company acting as tech incubator within the World Economic Forum to tackle issues like climate change, AI, battery technology and other real world problems. As a Front End Developer you … AWS preferred) You are a bright, proactive individual and a strong problem solver with commercial acumen What's in it for you: As a Front End Developer/Engineer, you will earn a competitive package including: Salary to £65k Bonus Pension Healthcare Work with the latest cutting-edge AI technologies Excellent training More ❯

Front End Developer/Engineer (TypeScript React AI) London/WFH to £65k Want to work on intellectually and technically challenging AI systems at the cutting edge of what is possible, whilst learning and collaborating with an amazing team and enjoying flexible working and a range of other perks? You could be … progressing your career as a Front End Developer at a well-established AI company acting as a tech incubator within the World Economic Forum, tackling issues like climate change, AI, battery technology, and other real-world problems. As a Front End Engineer, you'll design and develop new … preferred). You are a proactive problem solver with commercial acumen and a bright, enthusiastic personality. What's in it for you: As a Front End Developer/Engineer, you will earn a competitive package including: Salary up to £65k Bonus Pension Healthcare Opportunity to work with the latest cutting-edge AI More ❯

Fat Media, a traditional full-service agency based in the North West focused on aspiring SMEs. The Opportunity We’re seeking an experienced Senior Front End Developer who will complement and bolster our current team of talented developers.You will get to explore new technology and influence ways of working within our collaborative … develop ours; we are receptive to new solutions and love finding innovative ways of delivering modern software solutions. We’re looking for someone who’s serious about front-end technologies and also has a keen eye for nice design and really cares about how the things they make end up looking on screen. You More ❯

Social network you want to login/join with: Front End Developer TypeScript React Native, London col-narrow-left Client: Client Server Location: London, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Reference: 86c77cf7c4e6 Job Views: 3 Posted: 29.06.2025 Expiry Date: 13.08.2025 … col-wide Job Description: Front End Developer/Engineer (TypeScript React Native AI) London/WFH to £65k Want to work on intellectually and technically challenging AI systems at the cutting edge of what is possible, whilst learning and collaborating with an amazing team and enjoying flexible working and a range of … other perks? You could be progressing your career as a Front End Developer at a well-established AI company acting as tech incubator within the World Economic Forum to tackle issues like climate change, AI, battery technology and other real world problems. As a Front End Developer More ❯

free of barriers. We encourage you to apply if your qualifications and experience are a good fit for any of our openings. Your role: The Senior Frontend Developer is a member of a small, highly focused team, responsible for building modern, sophisticated applications, using leading edge technologies. This is an opportunity to work alongside some of … Web Service API integration Selenium/Cypress Unit testing with Mocha, Jasmine/Jest, React Test Related web technologies like Sass/Less, AJAX and JSON Micro Front-End What you can expect: At Global Relay, there’s no ceiling to what you can achieve. It’s the land of opportunity for the energetic, the intelligent More ❯

Join to apply for the Senior Front-End Developer role at Cynomi We are seeking a Senior Front-End Developer to join our growing in-house engineering team and work on our user-facing React-based vCISO platform. As a senior team member, you … will contribute to shaping the future technical direction of our front-end codebase, deliver new features and improvements, and mentor junior colleagues. The ideal candidate will be passionate, self-motivated, with significant web development experience, capable of working in a fast-paced environment to support business success. About us: Cynomi is a fast-growing, Silicon Valley … platform, enabling high-quality cybersecurity services for MSPs and MSSPs. Key Responsibilities: Develop, test, debug, and maintain features, ensuring high-quality, efficient code. Research and promote new front-end technologies and methodologies to improve processes and influence architecture decisions. Transform requirements and mockups into robust, high-quality code, providing technical insights and addressing constraints. Collaborate with More ❯

partners who wish to operate their own pools for their own end players. About This Role We are looking for a passionate Front End developer with a good eye for UX design, eager to continuously dig through all that is the software development iceberg. Your role will be primarily focused More ❯

rich and complex, and our purpose is unique. We'd love you to join us. What skills, knowledge and experience will you need? Significant demonstrable expertise in Front-end development of large-scale systems dealing with high numbers of users, transactions and business processes. Detailed working knowledge and extensive experience of open-source technologies including HTML … CSS, client and server-side JavaScript, TypeScriptNode.js and other modern front-end frameworks and templating languages. Experience in building accessible compliant user interfaces. Proven ability in delivering thorough unit level test coverage using common testing frameworks such as Jest or Mocha. Experience integrating with a wide range of technical systems including database … technologies (SQL or NoSQL), caching tools such as Redis and API Microservices, all deploying into cloud-based infrastructure. (AWS or Azure). Influential and able to lead front-end activities, set and develop best practice for an agile team and contribute across multiple teams. You will ensure consistency whilst promoting standards as well as creating a More ❯

Senior Front End Developer/Engineer (JavaScript Vue.js) London to £100k Do you enjoy working with a range of programming languages? You could be progressing your career in a senior, hands-on Front End Developer role at a scale-up tech company, that enables … of £125 million. You'll be working on complex and interesting systems and can enjoy a range of benefits and perks. As a Senior Front End Developer you'll collaborate as part of an Agile technology team to design and develop, troubleshoot and solve complex software issues to help scale and future … developers You're likely to be degree educated in Computer Science or similar tech discipline What's in it for you: As a Senior Front End Developer you will receive a competitive package: Salary to £100k 25 days holiday (increasing to 30), plus Christmas Eve Vitality healthcare plus a host of wellbeing More ❯

Senior Front End Developer/Engineer (JavaScript Vue.js) London to £100k Do you enjoy working with a range of programming languages? You could be progressing your career in a senior, hands-on Front End Developer role at a scale-up tech company, that enables … of £125 million. You'll be working on complex and interesting systems and can enjoy a range of benefits and perks. As a Senior Front End Developer you'll collaborate as part of an Agile technology team to design and develop, troubleshoot and solve complex software issues to help scale and future … developers You're likely to be degree educated in Computer Science or similar tech discipline What's in it for you: As a Senior Front End Developer you will receive a competitive package: Salary to £100k 25 days holiday (increasing to 30), plus Christmas Eve Vitality healthcare plus a host of wellbeing More ❯

Senior Front End Developer/Engineer (JavaScript Vue.js) London to £100k Do you enjoy working with a range of programming languages? You could be progressing your career in a senior, hands-on Front End Developer role at a scale-up tech company, that enables … of £125 million. You'll be working on complex and interesting systems and can enjoy a range of benefits and perks. As a Senior Front End Developer you'll collaborate as part of an Agile technology team to design and develop, troubleshoot and solve complex software issues to help scale and future … developers You're likely to be degree educated in Computer Science or similar tech discipline What's in it for you: As a Senior Front End Developer you will receive a competitive package: Salary to £100k 25 days holiday (increasing to 30), plus Christmas Eve Vitality healthcare plus a host of wellbeing More ❯

Social network you want to login/join with: Our Team At Trilitech, our mission is to power the Web3 revolution by building cutting-edge solutions on the Tezos blockchain. We specialise in core development, application development, and business development More ❯

Join to apply for the Front-End Developer (12-Month Contract) role at ECA International Join to apply for the Front-End Developer (12-Month Contract) role at ECA International About Us As a leading group of companies, the ECA International Group stands as … to experience a rewarding career where your potential is celebrated, and your journey to excellence begins. About The Role We are seeking a highly skilled and experienced Front-End Developer (12-Month Contract) to join our Technology & Engineering team at ECA International. This is a hands-on role ideal for a self … passionate about building responsive, user-centric web applications using React, Remix, TypeScript/JavaScript, CSS, and Tailwind. The successful candidate will be responsible for designing and implementing front-end solutions that integrate seamlessly with back-end services, ensuring a scalable and maintainable architecture. You will work collaboratively within an Agile team, translating business requirements More ❯

expert Front End Developers, 1 Senior Front End Dev and 1 Mid level FE Dev. Role - Front End Developer (looking for both Mid and Senior) Core FE Tech stack - HTML, CSS, JavaScript, TypeScript, React/Redux, Tanstack, UI/UX Salary - 60k to 80k More ❯

with a culture focused on diversity and inclusion amongst our entire team. About the Role We have an exciting opportunity for a talented Senior Front End Developer to join our London based scrum team. The Technology team is primarily offshore but are looking to build out a London scrum team to be … tools such as vue.js, graphql, docker and Kubernetes as well as migrating to Google Cloud Platform. We are on a journey so are looking for a great developer but also someone that can bring their own expertise to push forward our overall technical excellence. Skills & Experience Significant experience with a JavaScript framework for front More ❯