1 to 25 of 31 Front-End Developer (Client-Side Developer) Jobs in the South East

FDM is a global business and technology consultancy seeking a Front-end Developer to work for our client within the public sector. This is initially a 6-month contract with the potential to extend and will be a hybrid role based in Leatherhead, Surrey. Our client is looking … for a Front-end Developer who has experience with Angular 14+, JavaScript, CSS and HTML5. Responsibilities Enhance and optimise performance, ensuring efficient running across devices and platforms Identify and resolve issues such as usability issues, across various browsers Collaborate with back-end developers and designers, implementing APIs to ensure smooth … user experience Create clean and reusable code ensuring best practices and standards are met Keep updated with rising front-end technologies and tools Requirements Proven experience as a Front-end Developer Eligible for Security Clearance Expertise in Angular 14+, TypeScript, RxJS, JavaScript and AstroUXDS Skilled in CSS Grid More ❯

Front-end Developer 45,000 to 50,000 per annum Reading (Hybrid - 3 days on site) Benefits include: 4% Pension, 4 x Life Assurance Benefit Cover, Income Protection, Critical Illness cover and more Join a forward-thinking tech company that delivers high-impact research and data solutions to leading private equity firms More ❯

Front-end Developer £45,000 to £50,000 per annum Reading (Hybrid - 3 days on site) Benefits include: 4% Pension, 4 x Life Assurance Benefit Cover, Income Protection, Critical Illness cover and more Join a forward-thinking tech company that delivers high-impact research and data solutions to leading private equity firms More ❯

Front-End Developer Hybrid London (2 days a week) Up to £75,000 + Benefits Are you passionate about building interactive, user-friendly web applications that make a real impact? We're partnering with a cutting-edge tech company combining distributed computing, simulation, and machine learning to revolutionise urban transport systems - and … they're looking for a Front-End Developer to help take their platform to the next level. Why this role? Be part of a mission-driven team improving the way cities move and operate. Work on FlowOS , a flagship product already being adopted by some of Europe's biggest public transport operators. … with balance to work remotely. Join a diverse, ambitious team of engineers, data scientists, and urban modelling experts. What you'll be doing: Designing, implementing, and testing front-end applications for FlowOS. Contributing across the full development lifecycle: from feature conception to release and customer testing. Choosing the right tools and influencing the long-term strategy 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 ❯

Location: London Clearance: Active SC or DV required Rate: Competitive/Negotiable (Outside IR35) Duration: 6 Months (scope to extend) I'm looking for a Senior Frontend Engineer to join a fast-growing UK Defence tech innovator building a generative More ❯

Location: London Clearance: Active SC or DV required Rate: Competitive/Negotiable (Outside IR35) Duration: 6 Months (scope to extend) I'm looking for a Senior Frontend Engineer to join a fast-growing UK Defence tech innovator building a generative More ❯

Senior Frontend Developer | £50,000 - £60,000 | Guildford | Hybrid At Jonothan Bosworth | Recruitment Specialists, we’re looking for a Senior Frontend Developer to lead the development of modern, scalable web applications, to join a fast-growing technology provider This is a chance to play a pivotal role in shaping frontend engineering practices More ❯

We’re looking for a creative Front-End Developer with a strong design focus to join a growing digital team. This role is ideal for someone passionate about web design, user experience, and bringing ideas to life through clean, engaging websites. The Role You’ll design and build responsive web pages using … friendly and accessible Support dashboard and data visualisation design work Maintain and update existing websites What You’ll Bring 1–2 years’ experience in web design or front-end development (freelance or personal projects count) Strong eye for design, layout, and colour Experience with Webflow and Figma (or Adobe XD/Sketch) Understanding of HTML, CSS More ❯

I am currently working with a London-based financial services client who are actively seeking multiple Frontend Developers for a brand-new business-critical project. What you'll need to succeed Extensive React/Typescript development experience, ideally More ❯

Frontend Engineer – Deep Tech AI Startup We're partnering with a venture-backed AI startup pushing the boundaries of video intelligence. Their real-time systems and cutting-edge infrastructure are redefining how data is processed at scale — and they're 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 ❯

Front End Developer - React, TypeScript JavaScript, React, TypeScript, HTML, CSS, UI/UX Basingstoke, Hybrid (3 days per week in office) An exciting new opportunity with a small, fast and sustainably growing SaaS company developing digital communications solutions for a range of global companies. Using cutting edge technology, their SAAS product … helps businesses test and improve the quality of digital communication to their customers and business partners. As part of their continued expansion, they are looking for a Front-End Developer to join their team and help continue to build their evolving platform. This is a rare opportunity to be an early joiner More ❯

Front End Developer - React, TypeScript JavaScript, React, TypeScript, HTML, CSS, UI/UX Basingstoke, Hybrid (3 days per week in office) An exciting new opportunity with a small, fast and sustainably growing SaaS company developing digital communications solutions for a range of global companies. Using cutting edge technology, their SAAS product … helps businesses test and improve the quality of digital communication to their customers and business partners. As part of their continued expansion, they are looking for a Front-End Developer to join their team and help continue to build their evolving platform. This is a rare opportunity to be an early joiner More ❯

Excellent opportunity for Front-End Developer looking to join a forward-thinking company producing award-winning software used by leading businesses across the globe. The successful Senior Frond Developer will need to have extensive commercial experience using ReactJS and should be comfortable working to their own initiative but … a specific build and deployment process. Skills required: Extensive ReactJS experience Be familiar with Agile development practices, including Continuous Integration and 5+ years' experience in enterprise level front-end web development: Solid understanding of semantic mark-up, including HTML5, CSS3 (comfortable with CSS animations and flexbox). Extensive ReactJS experience JavaScript, TypeScript Ability to mentor junior More ❯

Excellent opportunity for Front-End Developer looking to join a forward-thinking company producing award-winning software used by leading businesses across the globe. The successful Senior Frond Developer will need to have extensive commercial experience using ReactJS and should be comfortable working to their own initiative but … a specific build and deployment process. Skills required: Extensive ReactJS experience Be familiar with Agile development practices, including Continuous Integration and 5+ years' experience in enterprise level front-end web development: Solid understanding of semantic mark-up, including HTML5, CSS3 (comfortable with CSS animations and flexbox). Extensive ReactJS experience JavaScript, TypeScript Ability to mentor junior 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 ❯

Our client is a leading entertainment games company who are currently looking for a talented Senior front-end HTML Developer to join their dynamic team. Studio offices are located in the Oxfordshire area, and they are offering a hybrid working model, occasionally in the office.PLEASE NOTE: Candidates must be based … in the UK and possess full rights to work in the UK. About the RoleWe are seeking a highly experienced frontend developer who will be responsible for implementing and tuning high quality, optimised, maintainable code within a framework, ensuring the best user experience imaginable. If you have a background in developing mobile/desktop games and … will collaborate with designers and other developers to ensure that games are performant within their platform and operable on all platforms, mobile and desktop. As an experienced developer you will have worked on a variety of highly available applications and have experience collaborating with engineering teams around the world to design and maintain ground-breaking features. More ❯

TCS, you'll be part of a purpose-led transformation company, working on challenging projects that demand ambitious innovation and thought leadership. Key Responsibilities: Deliver high-quality front-end builds for responsive websites and mobile apps using React Native, HTML, CSS, and JavaScript with modern frameworks like React.js. Collaborate with designers and back-end developers to ensure seamless integration of front-end and back-end functionalities. Optimize mobile applications for performance and responsiveness . Ensure security by design , GDPR compliance, and accessibility standards in front-end code delivery. Deploy apps to iOS and Google Playstore . Apply DevOps concepts and use Azure … ADB2C and cloud services (API management, App Service, Azure configurations). Conduct code reviews and maintain front-end code quality and best practices. Stay updated with emerging front-end technologies, trends, and best practices. Write and maintain technical documentation for front-end code and processes. Participate in UI More ❯

Frontend Developer - SaaS - Basingstoke (Hybrid, 3 days in office) (Tech stack: Frontend Developer, React, TypeScript, Tailwind CSS, HTML, CSS, Playwright, UX, Web Accessibility, Agile, SCRUM, Frontend Developer) Our client is a fast-growing SaaS company that helps businesses test and improve the quality of their digital … real impact for their customers. This is a fantastic opportunity to join a profitable and scaling technology business at an exciting stage of growth. As a Frontend Developer, you will play a central role in shaping and enhancing the product used by thousands of professionals worldwide. Responsibilities: Develop and enhance product features using React, TypeScript, and … updates to the company's website. Operate within an Agile SCRUM environment, contributing to rapid release cycles. Knowledge, Skills & Experience: Strong commercial experience with React and modern front-end practices using TypeScript. A keen eye for design and usability, with awareness of accessibility standards. Excellent communication and collaboration skills. Organised, proactive, and able to manage competing 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 ❯

It also means committing to excellence, learning, and delivering great products to our customers in a high-velocity startup. The role We’re looking for a talented Front-End Engineer to drive the development of our high-performance AI video security platform. In this role, you will own a significant part of the front … skills. Experience with React Query, Storybook, and Material UI (or similar). Proven ability to optimize performance and build interactive, user-friendly applications. Experience leading large-scale front-end projects and setting best practices. Familiarity with backend/cloud technologies (AWS, Python, databases). Self-driven with a high level of intrinsic motivation to succeed and More ❯

It also means committing to excellence, learning, and delivering great products to our customers in a high-velocity startup. The role We’re looking for a talented Front-End Engineer to drive the development of our high-performance AI video security platform. In this role, you will own a significant part of the front … skills. Experience with React Query, Storybook, and Material UI (or similar). Proven ability to optimize performance and build interactive, user-friendly applications. Experience leading large-scale front-end projects and setting best practices. Familiarity with backend/cloud technologies (AWS, Python, databases). Self-driven with a high level of intrinsic motivation to succeed and More ❯