126 to 150 of 180 Front-End Developer (Client-Side Developer) Jobs

plus bonus Harrington Starr has partnered up with a Global Investment Bank in the City of London who are looking to hire a Senior UI Trading Software Developer to work in a Front Office environment with Traders, Quants and Portfolio Managers within a Front Office Trading Floor. This is a high profile … role for a Multi Asset Trading Team within a Front Office environment. As the Senior Trading UI Developer, you will have extensive experience of working with the JavaScript Framework including ES7 and HTML and CSS. You will be working directly with Portfolio Managers, Sales Traders and Quants and end users where you More ❯

plus bonus Harrington Starr has partnered up with a Global Investment Bank in the City of London who are looking to hire a Senior UI Trading Software Developer to work in a Front Office environment with Traders, Quants and Portfolio Managers within a Front Office Trading Floor. This is a high profile … role for a Multi Asset Trading Team within a Front Office environment. As the Senior Trading UI Developer, you will have extensive experience of working with the JavaScript Framework including ES7 and HTML and CSS. You will be working directly with Portfolio Managers, Sales Traders and Quants and end users where you More ❯

maintain backend systems using Node.js and JavaScript/TypeScript Develop and deploy cloud-native services on AWS (Lambda, ECS, DynamoDB, S3, etc.) Collaborate with the product and front-end teams to deliver seamless user experiences Contribute to technical architecture and best practices Build with scalability, performance, and security in mind What We’re Looking For Strong … Passionate about solving real problems with clean, maintainable code Nice to Have Experience with databases (PostgreSQL, DynamoDB, or MongoDB) Familiarity with Docker or serverless architectures Exposure to front-end frameworks (React, Next.js, etc.) Why Join Us Be part of an early-stage start-up where your work genuinely shapes the product High autonomy and the opportunity More ❯

maintain backend systems using Node.js and JavaScript/TypeScript Develop and deploy cloud-native services on AWS (Lambda, ECS, DynamoDB, S3, etc.) Collaborate with the product and front-end teams to deliver seamless user experiences Contribute to technical architecture and best practices Build with scalability, performance, and security in mind What We’re Looking For Strong … Passionate about solving real problems with clean, maintainable code Nice to Have Experience with databases (PostgreSQL, DynamoDB, or MongoDB) Familiarity with Docker or serverless architectures Exposure to front-end frameworks (React, Next.js, etc.) Why Join Us Be part of an early-stage start-up where your work genuinely shapes the product High autonomy and the opportunity More ❯

HTML CSS Front End Developer - £30-40k Crawley - 2 days per week in office My global media & marketing client requires a talented and motivated Front End … Developer to join them supporting the evolution of frontend development across various digital products to ensure designs are seamlessly implemented. Duties: - Participating in front-end development within an international B2B business, converting designs into clean, semantic, and responsive HTML/CSS/SCSS code. - Contributing to the implementation of React, Vue and … designs to ensure seamless performance and adherence to accessibility standards (e.g. WCAG compliance) - Optimising website performance to meet Core Web Vitals benchmarks. HTML CSS Front End Developer - £30-40k Crawley - 2 days per week in office 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 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 ❯

Just starting out in your development journey? We're looking for a Front-End Developer with solid TypeScript and React skills who's eager to grow in a supportive, modern dev environment. What You'll Do: Develop marketing website to drive lead generation Able to investigate complex problem statements and articulate a More ❯

Role: Frontend Developer – React + TypeScript Location: Cardiff (Hybrid – 3 days in office) Salary: £55,000–£60,000 per annum This Cardiff-based fintech has built one of the most trusted financial platforms in its sector. It’s mature, stable, and used by household names, but there’s still huge scope to … innovate, refine, and evolve. You’ll join a small, skilled team who care about quality, performance, and great user experience. Responsibilities Develop, test, and maintain scalable, performant front-end components using React and TypeScript Work closely with product and design teams to enhance the user experience and visual consistency Collaborate with backend engineers to integrate APIs … Contribute ideas to improve the overall architecture, workflow, and delivery process Experience Required Proven experience building responsive web applications using React and TypeScript Strong understanding of modern front-end principles, performance, accessibility, and usability Experience working with UI frameworks (AntD, Material UI, or similar) Familiarity with version control (Git) and collaborative development tools Ability to write More ❯

Lead Frontend Developer | £80k | Wigan Hybrid | Tech4Good G.Digital are buzzing to be working with a seriously forward-thinking eCommerce brand who are about to give their entire front end a glow-up, we’re talking full replatform to Next.js, powered by TypeScript, Tailwind, and top-tier design. They’re building the future … of online retail: faster sites, smarter journeys, and genuinely slick customer experiences, and now they need a Lead Developer to take the reins. The Role You’ll be steering the frontend rebuild from the ground up — leading a small but sharp dev team, shaping the new architecture, and setting the standards for clean, scalable, lightning-fast … actually land If you’re ready to lead a full-scale Next.js + TypeScript replatform and make something seriously cool then drop me a message. Lead Frontend Developer | £80k | Wigan Hybrid | Tech4Good More ❯

Senior Frontend Developer Edinburgh (Hybrid 3 days per week onsite) This is an exciting opportunity to work for a global leader in the innovation and development of cutting-edge software solutions used across the oil and gas industry. As well as a salary of up to £65,000 benefits include: Hybrid working Private healthcare and life … assurance Generous pension scheme Onsite gym Were looking for a technically minded Senior Frontend Developer with strong experience in React and exposure to Next.js and TypeScript. Youll be working on the more complex application layer, developing web apps and APIs that sit behind the scenes, this isnt just about UI, its about building powerful, high-performing More ❯

Senior Frontend Developer Aberdeen (Hybrid 3 days per week onsite) This is an exciting opportunity to work for a global leader in the innovation and development of cutting-edge software solutions used across the oil and gas industry. As well as a salary of up to £65,000 benefits include: Hybrid working Private healthcare and life … assurance Generous pension scheme Onsite gym Were looking for a technically minded Senior Frontend Developer with strong experience in React and exposure to Next.js and TypeScript. Youll be working on the more complex application layer, developing web apps and APIs that sit behind the scenes, this isnt just about UI, its about building powerful, high-performing More ❯

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-end stack, shaping its architecture, setting best practices and building a fantastic user experience. This involves: Developing … 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 ❯

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-end stack, shaping its architecture, setting best practices and building a fantastic user experience. This involves: Developing … 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 ❯

Senior Frontend Developer Edinburgh (Hybrid – 3 days per week onsite) This is an exciting opportunity to work for a global leader in the innovation and development of cutting-edge software solutions used across the oil and gas industry. As well as a salary of up to £65,000 benefits include: Hybrid working Private healthcare and life … assurance Generous pension scheme City centre locations - minutes from Waverly Station We’re looking for a technically minded Senior Frontend Developer with strong experience in React and exposure to Next.js and TypeScript. You’ll be working on the more complex application layer, developing web apps and APIs that sit behind the scenes, this isn’t just More ❯

UI/UX Designer & Frontend Developer Mobile, WCAG, Adobe CC, HTML, CSS, Javascript, Blazor Outstanding opportunity to join this global enterprise and famous brand within the magic circle of the legal sector. From a technology perspective, this organisation is a leader in its domain, significantly investing in AI and automation within an established cloud native (Azure More ❯

I’m working with a fast-growing AI company that’s building scalable infrastructure products and developer platforms for next-generation applications. They’re looking for a Frontend Engineer who’s passionate about crafting clean, high-performing user interfaces and exploring how AI-assisted tools and LLMs can improve developer workflows, automation … LLM development tools Nice to have • Background in data-driven or blockchain-based products • Experience with data visualisation (D3.js, Chart.js) or GraphQL • Interest in performance optimisation and developer tooling 📍 London (Hybrid) 💰 Competitive salary + equity potential If you’re curious about how AI is transforming the way engineers build and scale modern infrastructure and want to More ❯

I’m working with a fast-growing AI company that’s building scalable infrastructure products and developer platforms for next-generation applications. They’re looking for a Frontend Engineer who’s passionate about crafting clean, high-performing user interfaces and exploring how AI-assisted tools and LLMs can improve developer workflows, automation … LLM development tools Nice to have • Background in data-driven or blockchain-based products • Experience with data visualisation (D3.js, Chart.js) or GraphQL • Interest in performance optimisation and developer tooling 📍 London (Hybrid) 💰 Competitive salary + equity potential If you’re curious about how AI is transforming the way engineers build and scale modern infrastructure and want to More ❯

worldwide and they're looking for a frontend developer. The role is paying up to £35,000 and is 5 days a week in the office. Essential: Client-side Javascript/Typescript Modern React Development (Hooks, Context, React Query) Unit & Component testing using React Testing Library Advanced version control using Git. Working with third party REST … Performance optimisation experience (code-splitting, caching, load testing) Well-versed in implementing good practice with regards to accessibility (Keyboard support, screen readers, form usability) Knowledge of various front-end architectural patterns E2E Testing experience (Cypress/Playwright) Experience with Observability as a practice (logging, GA tagging, TrackJS, App Insights) If you would be interested please apply More ❯

worldwide and they're looking for a frontend developer. The role is paying up to £35,000 and is 5 days a week in the office. Essential: Client-side Javascript/Typescript Modern React Development (Hooks, Context, React Query) Unit & Component testing using React Testing Library Advanced version control using Git. Working with third party REST … Performance optimisation experience (code-splitting, caching, load testing) Well-versed in implementing good practice with regards to accessibility (Keyboard support, screen readers, form usability) Knowledge of various front-end architectural patterns E2E Testing experience (Cypress/Playwright) Experience with Observability as a practice (logging, GA tagging, TrackJS, App Insights) If you would be interested please apply More ❯

Frontend Developers (mid - seniors) - React Next.js TypeScript - Liverpool/Hybrid - Up to £75,000 Are you a frontend developer with a product mindset? Do you question what you’re building, challenge assumptions, and care about creating experiences that users enjoy? If so, this is the role for you. This is an opportunity to join an engineering More ❯

Senior Frontend Developer | Securing GenAI | Up to £130,000 p/a + Equity Senior Frontend Developer - Typescript & React Helping organisations securely and safely adopt Artificiual Intelligence tools Up to £130,000 per annum + Equity We're partnered with a company bringing much needed security and data protection to AI. As … secured an impressive Series A round and built by the founders of a former unicorn in this space, they are looking to add an experienced Senior Frontend Developer to work on a number of exciting greenfield and upgrade projects to the platform. Strong proficiency in Typescript & React is required, and design experience (Storybook/Figma etc … or experience is a bonus, but not a must have. Interested in finding out more? Apply within or reach out to James for more information. Senior Frontend Developer | Securing GenAI | Up to £130,000 p/a + Equity More ❯

Senior Frontend Developer | Securing GenAI | Up to £130,000 p/a + Equity Senior Frontend Developer - Typescript & React Helping organisations securely and safely adopt Artificiual Intelligence tools Up to £130,000 per annum + Equity We're partnered with a company bringing much needed security and data protection to AI. As … secured an impressive Series A round and built by the founders of a former unicorn in this space, they are looking to add an experienced Senior Frontend Developer to work on a number of exciting greenfield and upgrade projects to the platform. Strong proficiency in Typescript & React is required, and design experience (Storybook/Figma etc … or experience is a bonus, but not a must have. Interested in finding out more? Apply within or reach out to James for more information. Senior Frontend Developer | Securing GenAI | Up to £130,000 p/a + Equity More ❯

Frontend Developer Leeds (hybrid 3/2) £30,000-£45,000 This is an opportunity to work for a powerhouse of an agency in Leeds with multiple international clients, a modern tech stack and cutting-edge opportunities in Artificial Intelligence. They really do punch well above their weight! They’ve got high coding standards, excellent training … and a modern JavaScript ecosystem that delivers quality products. This role would suit a mid-level frontend developer or an established full stack dev with agency experience. Key Skills required/tech they use: JavaScript ecosystem – React, TypeScript Node Express, Apollo Headless CMS TDD Knowledge of cloud tech If you’ve got 2-4 years’ experience More ❯

JavaScript/React.js Developer to join our growing development team. In this role, you will be responsible for building and maintaining modern, scalable front-end applications using JavaScript and React.js. You'll collaborate closely with UX/UI designers, backend developers, and product managers to deliver seamless user experiences. Key Responsibilities: Software More ❯