1 to 25 of 33 Front-End Developer (Client-Side Developer) Jobs in London

Front-End Developer (Contract - £300-£400/day, Fully Remote) (JavaScript/Vue.js) Initial 1-Month Contract | Potential for Ad-Hoc Ongoing Work We're looking for an experienced Front-End Developer to join a fast-paced digital transformation project for a leading UK … an order processing platform that integrates data from over 40 different software tools. The ideal candidate will have a sharp eye for detail, a strong understanding of front-end best practices, and the ability to hit the ground running in a dynamic environment. Tech Stack: JavaScript (ES6+) Vue.js HTML5/CSS3 REST APIs & JSON What You … Optimise workflows and improve system usability for internal teams Collaborate with backend developers and project leads to finalise and deploy key features Contribute to performance improvements and front-end best practices You'll Succeed If You: Have proven experience in Vue.js and modern JavaScript frameworks Thrive in fast-moving, delivery-focused environments Can jump into an More ❯

Front End Developer Home-Based (within the UK) About Us At Family Action, we transform lives by providing practical, emotional and financial support to those experiencing poverty, disadvantage and social isolation.Since 1869, we’ve been building stronger families, and today, we work with over 60,000 families across more than 190 services. … also support thousands more through national programmes and grants, helping everyone find the tools to overcome challenges and thrive.We are now looking for a Front End Developer to join our team on a permanent, full-time basis, working 37 hours per week. The Benefits - Salary of £43,042 per annum (inclusive of … vouchers- Cycle to work scheme- Investing in your professional development with ongoing quality training and career development opportunitiesThis is the ideal role for a Software Engineer with front-end experience gained with web applications, JavaScript or TypeScript and modern React to advance their career in a meaningful way with our leading, vital charity.As a critical member More ❯

Details Clearance required: SC Cleared IR35 Status: Outside IR35 Start date: 01/12/2025 Pay rate: 400-500/d Front-End Developer We are forming a new Data Team to deliver a unified, user-friendly interface that consolidates dashboards, reports, and analytical outputs from across the organisation. This "single … pane of glass" will serve as the central hub for stakeholders to explore data, monitor performance, and make informed decisions. As the Front-End Developer , you will play a pivotal role in designing and building this interface from the ground up. You'll work closely with Data Analysts, Data Scientists, Engineers, and … them into intuitive, dynamic visual experiences. Your work will directly influence how data is consumed and acted upon across the organisation. Responsibilities Design and develop a unified front-end interface that integrates dashboards, reports, models, and data pipelines into a single, intuitive view Ensure the interface adheres to accessibility standards (e.g. WCAG 2.2), enabling inclusive access More ❯

Provide are seeking a Mid-Senior Front-End Developer to join our clients' dynamic engineering team, building user-centric web applications that scale to thousands of customers. You will work primarily with React , TypeScript, and modern front-end technologies to deliver responsive, performant, and accessible interfaces. Collaborating closely … with designers, backend engineers, and product managers, you’ll turn complex requirements into intuitive, polished user experiences. As a senior contributor, you will influence the front-end architecture, enforce best practices, and ensure high code quality across the team. The ideal candidate has professional experience with React, TypeScript, and modern JavaScript frameworks , along with a strong … understanding of component-based architecture, state management (e.g., Redux, Zustand, or Recoil), and front-end performance optimization. Experience with RESTful APIs, GraphQL, and testing frameworks (Jest, React Testing Library, Cypress) is highly desirable. You should be comfortable mentoring junior engineers, conducting code reviews, and helping the team adopt scalable, maintainable practices. This role offers an exciting More ❯

Provide are seeking a Mid-Senior Front-End Developer to join our clients' dynamic engineering team, building user-centric web applications that scale to thousands of customers. You will work primarily with React , TypeScript, and modern front-end technologies to deliver responsive, performant, and accessible interfaces. Collaborating closely … with designers, backend engineers, and product managers, you’ll turn complex requirements into intuitive, polished user experiences. As a senior contributor, you will influence the front-end architecture, enforce best practices, and ensure high code quality across the team. The ideal candidate has professional experience with React, TypeScript, and modern JavaScript frameworks , along with a strong … understanding of component-based architecture, state management (e.g., Redux, Zustand, or Recoil), and front-end performance optimization. Experience with RESTful APIs, GraphQL, and testing frameworks (Jest, React Testing Library, Cypress) is highly desirable. You should be comfortable mentoring junior engineers, conducting code reviews, and helping the team adopt scalable, maintainable practices. This role offers an exciting More ❯

The Role An opportunity for a Frontend Engineer with strong Next.js experience to join a fast-growing fintech business delivering several greenfield product builds. You'll play a key part in shaping new customer-facing and internal platforms - building intuitive More ❯

The Role An opportunity for a Frontend Engineer with strong experience to join a fast-growing fintech business delivering several greenfield product builds. You'll play a key part in shaping new customer-facing and internal platforms - building intuitive, high 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 ❯

Senior Frontend Developer (React) - Series A GenAI Security Scale-up Salary: £120,000 - £135,000 (DOE) + equity + benefits Hybrid: 2 days/week in Central London office (Kings Cross/Covent Garden area) A Series A, high-growth cybersecurity scale-up (~40 employees) is looking for a Senior React Engineer to join their mission … of helping companies adopt Generative AI safely and securely. They are building a developer-first platform that enables data protection without complexity - redefining security for the GenAI era. This is a rare chance to join at a pivotal time as they scale their infrastructure across regions, including a full US AWS deployment. You'll be joining More ❯

Senior Front End Developer Location: Remote Salary: Paying up to 90,000, depending on experience. Sector: Technology/Data Infrastructure Client: Leading Global Data Centre Provider A prestigious data centre provider is seeking a highly skilled Senior Front End Developer to lead More ❯

Senior Front End Developer Location: Remote Salary: Paying up to 90,000, depending on experience. Sector: Technology/Data Infrastructure Client: Leading Global Data Centre Provider A prestigious data centre provider is seeking a highly skilled Senior Front End Developer to lead More ❯

Front End React Developer, React, Javascript, NW London to £80K A leading financial software company are looking for a Front End JavaScript developer who is proficient with React.js. The role is Offcie based in North West London, Your primary focus will be on developing … infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product is important. Responsibilities Developing new user-facing features using React.js Building reusable components and front-end libraries for future use Translating designs and wireframes into high quality code Optimising components for maximum performance across a vast array of web-capable devices and browsers … principles Experience with Redux and RTK (RTKQuery also a bonus) Familiarity with RESTful APIs Knowledge of modern authorization mechanisms, such as JSON Web Token Familiarity with modern front-end build pipelines and tools (Github actions a bonus) Experience with common front-end development tools such as Babel, Webpack, NPM, etc. Ability to More ❯

Frontend Web Developer This is an initial 12-month Fixed-term Contract (Maternity cover) with the view to make it permanent.Location: Fully Remote (UK)Salary: £35,000 - £42,000 (DOE) The role: We enjoy making the complex simple from our clients. We create websites, campaigns and digital products for professional services clients, arts, fashion, and e More ❯

Senior Frontend Developer Up to £80,000 Central London - Flexible Hybrid Options Health-Tech A start-up within the health space are seeking a Senior Frontend Developer to join a high performing squad of engineers building a unique SAAS platform which is radically streamlining an existing complex process. You'd join as … a Senior Frontend Developer and make a real impact on user facing features from the off while enhancing frontend architecture in order to accelerate the products ground-breaking advancements. As a Senior Frontend Developer, you will have the following: Strong expertise in React & Typescript - ideally also with Next.js Strong UI/UX … social impact and grow with the company This is an exciting opportunity to work on impactful projects in a forward-thinking environment. If you are passionate about front-end development, we’d love to hear from you More ❯

Senior Frontend Developer Up to £80,000 Central London - Flexible Hybrid Options Health-Tech A start-up within the health space are seeking a Senior Frontend Developer to join a high performing squad of engineers building a unique SAAS platform which is radically streamlining an existing complex process. You'd join as … a Senior Frontend Developer and make a real impact on user facing features from the off while enhancing frontend architecture in order to accelerate the products ground-breaking advancements. As a Senior Frontend Developer, you will have the following: Strong expertise in React & Typescript - ideally also with Next.js Strong UI/UX … social impact and grow with the company This is an exciting opportunity to work on impactful projects in a forward-thinking environment. If you are passionate about front-end development, we’d love to hear from you More ❯

Senior Frontend Developer Up to £80,000 Central London - Flexible Hybrid Options Health-Tech A start-up within the health space are seeking a Senior Frontend Developer to join a high performing squad of engineers building a unique SAAS platform which is radically streamlining an existing complex process. You'd join as … a Senior Frontend Developer and make a real impact on user facing features from the off while enhancing frontend architecture in order to accelerate the products ground-breaking advancements. As a Senior Frontend Developer, you will have the following: Strong expertise in React & Typescript - ideally also with Next.js Strong UI/UX … social impact and grow with the company This is an exciting opportunity to work on impactful projects in a forward-thinking environment. If you are passionate about front-end development, we’d love to hear from you More ❯

Senior Frontend Developer Up to £80,000 Central London - Flexible Hybrid Options Health-Tech A start-up within the health space are seeking a Senior Frontend Developer to join a high performing squad of engineers building a unique SAAS platform which is radically streamlining an existing complex process. You'd join as … a Senior Frontend Developer and make a real impact on user facing features from the off while enhancing frontend architecture in order to accelerate the products ground-breaking advancements. As a Senior Frontend Developer, you will have the following: Strong expertise in React & Typescript - ideally also with Next.js Strong UI/UX … social impact and grow with the company This is an exciting opportunity to work on impactful projects in a forward-thinking environment. If you are passionate about front-end development, we’d love to hear from you More ❯

Front-End Engineer Location: London (Onsite, 5 days per week) Salary & Benefits: £80,000– £120,000 + Benefits Investigo are partnered with an innovative AI technology company. They’re on a mission to transform the way businesses leverage systems through AI-powered solutions, and they’re looking for a Front-End Engineer More ❯

Front-End Engineer Location: London (Onsite, 5 days per week) Salary & Benefits: £80,000– £120,000 + Benefits Investigo are partnered with an innovative AI technology company. They’re on a mission to transform the way businesses leverage systems through AI-powered solutions, and they’re looking for a Front-End Engineer More ❯

Front-End Engineer Location: London (Onsite, 5 days per week) Salary & Benefits: £80,000– £120,000 + Benefits Investigo are partnered with an innovative AI technology company. They’re on a mission to transform the way businesses leverage systems through AI-powered solutions, and they’re looking for a Front-End Engineer More ❯

Front-End Engineer Location: London (Onsite, 5 days per week) Salary & Benefits: £80,000– £120,000 + Benefits Investigo are partnered with an innovative AI technology company. They’re on a mission to transform the way businesses leverage systems through AI-powered solutions, and they’re looking for a Front-End Engineer More ❯

Frontend Developer | Up to £85k | Hybrid (1 day onsite p/week) | London Make a meaningful impact by contributing to a health tech company that's improving digital tools used by patients and clinicians alike. You'll help build a medical-backed platform focused on better decision-making and ultimately improved healthcare outcomes. What you need More ❯

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 More ❯

limited hiring capabilities. About the Opportunity We are building Version 2 of SkilledUp Life after operating our Minimum Viable Product for 4 years. Our tech stack includes: Front-end: Vue.js Database: MariaDB Hosting environment: AWS EC2 + S3 We are looking for front-end developers. The product team is led by an More ❯

Frontend Developer London - 3x Days per week on-site 3-6 Month Contract One of our major banking clients is looking for a Front end Developer. Must-Have Skills: Strong proficiency in React and JavaScript . Deep understanding of web accessibility standards and testing methodologies. Experience designing and implementing component libraries . More ❯