1 to 25 of 31 Front-End Developer (Client-Side Developer) Jobs in Central London

drive to succeed paired with a continuous hunger to learn. Leadership - You are trusted, empathetic, accountable, and empower others around you. Primary responsibilities Collaborating with designers, writing front-end code and unit tests, working on the front-end architecture Spearheading the development of our frontend stack, architecting, and building frontend projects Being … with user-experience and design team Designing and maintaining JavaScript libraries, making sure they support the creative and engineering standards of BlackRock Keeping abreast of the new front-end web development technologies; integrate them with the existing systems Understanding and supporting existing systems, and resolve operations issues while working with other engineering staff located across the … Being passionate about technology, with personal ownership for the work you do Essential skills/experience Is a must: 4+ years hands-on development experience on the front-end development with single page application frameworks like Angular, React. Hands on experience in working with TypeScript. Demonstratable experience in working with and designing REST APIs Knowledge and More ❯

Experience: React.js, Typescript, Azure Role Description: • Bachelor’s degree in computer science, Information Technology, or a related field (or equivalent work experience). • Proven experience as a Front-End Developer with a focus on React.js and Typescript. • Familiarity with C# and .Net. • Strong proficiency in JavaScript, ES6/ES7, and related front More ❯

If you need support in completing the application or if you require a different format of this document, please get in touch with at UKI.recruitment@tcs.com with the subject line: “Application Support Request”. Role: Front End More ❯

Senior Frontend Engineer – Scaling Start-Up – Up to £130,000 + Equity 🚀 💰Up to £130,000 plus equity 🏡Hybrid working – London based 💻React.js & TypeScript We’re partnered with a scaling Start-Up who have recently raised significant investment and are More ❯

seen by thousands of people and will directly influence how high-profile brands connect with their audiences. Who we’re looking for We’re looking for a front-end developer who’s motivated, curious, and excited to create impactful e-commerce experiences. You’ll be joining at an early stage, which means … of modern JavaScript Ability to write well-structured, semantic, and accessible HTML Confidence writing framework-agnostic, performance-focused JavaScript Awareness of WCAG accessibility guidelines Solid understanding of front-end performance best practices Strong attention to detail when building polished, complex interactions A positive, problem-solving mindset and broad technical curiosity Experience with modern web tooling (transpilers … of modern and emerging browser APIs Familiarity with progressive enhancement principles Nice to have Not essential, but any of these would be a bonus: Experience with a front-end/full-stack framework like React or Remix Experience with a back-end language, framework, or backend platform like Supabase Experience setting up or running More ❯

seen by thousands of people and will directly influence how high-profile brands connect with their audiences. Who we’re looking for We’re looking for a front-end developer who’s motivated, curious, and excited to create impactful e-commerce experiences. You’ll be joining at an early stage, which means … of modern JavaScript Ability to write well-structured, semantic, and accessible HTML Confidence writing framework-agnostic, performance-focused JavaScript Awareness of WCAG accessibility guidelines Solid understanding of front-end performance best practices Strong attention to detail when building polished, complex interactions A positive, problem-solving mindset and broad technical curiosity Experience with modern web tooling (transpilers … of modern and emerging browser APIs Familiarity with progressive enhancement principles Nice to have Not essential, but any of these would be a bonus: Experience with a front-end/full-stack framework like React or Remix Experience with a back-end language, framework, or backend platform like Supabase Experience setting up or running More ❯

seen by thousands of people and will directly influence how high-profile brands connect with their audiences. Who we’re looking for We’re looking for a front-end developer who’s motivated, curious, and excited to create impactful e-commerce experiences. You’ll be joining at an early stage, which means … of modern JavaScript Ability to write well-structured, semantic, and accessible HTML Confidence writing framework-agnostic, performance-focused JavaScript Awareness of WCAG accessibility guidelines Solid understanding of front-end performance best practices Strong attention to detail when building polished, complex interactions A positive, problem-solving mindset and broad technical curiosity Experience with modern web tooling (transpilers … of modern and emerging browser APIs Familiarity with progressive enhancement principles Nice to have Not essential, but any of these would be a bonus: Experience with a front-end/full-stack framework like React or Remix Experience with a back-end language, framework, or backend platform like Supabase Experience setting up or running More ❯

Senior Frontend Engineer £100K - £120K base + meaningful equity (think early-stage upside, not crumbs) London, onsite 4 days per week (non-negotiable) A well-funded, London-based AI startup (Series A, backed by tier 1 funds and some very More ❯

Frontend Engineer | Fintech (Buy-Side) | London Location: Marylebone (on-site – 5 days/week) Stage: Early/Stealth Product: B2B Fintech Platform for Buy-Side Institutions A well-backed stealth fintech is hiring a Frontend Engineer. More ❯

Dunbar Brown Group are excited to be working retained with our London based customer. We are looking for a Senior Front End Engineer to join a growing team for a business that is a market leader More ❯

Contract | Staff Frontend Software Engineer | £600-£800/day Outside IR35 React Software Engineer £600-£800/day Initial 6 Month Duration Outside IR35 Hybrid - Central London (3 days a week) We are partnered with a well-funded scale up More ❯

Greetings from Ubique Systems!!! We are looking for a React + Azure Developer for one of our customer who has an expertise in:- Extensive experience in JavaScript & Typescript development, with a strong focus on React JS and Node JS (Mainly Typescript with React JS and Node JS) Good to have experience working with the Cancara … Design System and the InterStellar Web SDK Deploy build and manage apps on Azure cloud Integrate with Azure functions and API Experience on Google Cloud Proficiency in front-end technologies such as HTML, CSS, JavaScript, and Typescript frameworks (e.g. React, React Context, Redux etc..) Familiarity with version control systems (e.g., Git) and agile development methodologies Strong More ❯

Are you an experienced Frontend Developer looking for a new challenge and to work for an AI startup with an important mission? 🚀 Senior Frontend Developer – AI Data Security 🚀 Location : Hybrid working 1-3 days a week in central London (King’s Cross) Salary : up to £135,000 + bonus + equity We … exciting time to join the team as they are growing across multiple areas of the business, having just secured over £17mil in funding. As a Senior Frontend Developer, you will: Have 6+ years experience as a Frontend Software Engineer Experience developing with: React, Typescript, HTML, CSS A desire to be part of an important mission Be … illness cover If you enjoy a flexible culture with the ability to work from home a few days a week, apply now for this unmissable Senior Frontend Developer opportunity now! Please note : Due to compliancy reasons, we will only be able to consider applications based in and eligible to work in the UK. More ❯

Frontend Developer - React, NodeJS and TypeScript – Up to £500/day (Outside IR35) – Hybrid (London) – 3 month contract My client is seeking an experienced Frontend Developer to join their team. You will need strong commercial experience in working with React, NodeJS and TypeScript. Essential Skills: Strong commercial experience with React More ❯

EdTech Frontend Developer – Vue/Nuxt (Mid-Level+) I am looking for a Frontend Developer with 2+ years' experience working with modern web technologies to join my clients team who are in the EdTech space! Core Skills: Vue.js & Nuxt 4 (Vite, Composition API, Pinia, Nuxt Plugins) TypeScript/JavaScript (ES6) – clean, maintainable More ❯

EdTech Frontend Developer – Vue/Nuxt (Mid-Level+) I am looking for a Frontend Developer with 2+ years' experience working with modern web technologies to join my clients team who are in the EdTech space! Core Skills: Vue.js & Nuxt 4 (Vite, Composition API, Pinia, Nuxt Plugins) TypeScript/JavaScript (ES6) – clean, maintainable More ❯

Frontend Software Developer London (Remote) | £30,000–£45,000 + shares & bonus Tech: JavaScript, React, TypeScript, Next.js, HTML, CSS We’re partnered with a leading SaaS company in the HR technology space, looking for a junior to mid-level frontend developer to join their growing team. You’ll work on modern, responsive 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 ❯

Lead Frontend Developer | Shopify | Fast-Growing Consumer Brand London - Hybrid We’re working with one of Europe’s fastest-growing consumer brands, scaling fast and looking for a Lead Frontend Developer to own and evolve their e-commerce experience. You’ll lead the migration to Shopify, optimise performance and conversion across the 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 ❯

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 This is an office based role requiring 5 days per week in their new London office. La Fosse are partnering with a market leader within the energy & trading sector, with a strong presence across oil & gas, renewables, power and carbon. They're in the market for a Senior Frontend Developer More ❯

now looking for a Frontend Engineer as the business continues to scale. What will you be doing: Be responsible for taking ownership of projects and running the front-end development for their customers Build the interfaces that allow customers to choose between different products to best find the product that meets their requirements Implement robust A More ❯

Frontend Developer - (Fully Remote - UK) Frontend Developer Fully Remote (UK) + 40 days' Annual leave Up to £60,000 p/a + Equity Typescript + Vue preferred (open to other frontend frameworks) I am working with an exciting startup in the Payments Reconciliation space who already have product market fit and … are continuing to generate strong revenue after securing strong funding and valuable partnerships. They are looking for a Frontend Developer, specialising in Typescript and Vue, but open to cross-training from other frameworks. The ideal candidate would have a solid understanding of best engineering and design practices and experience working with international users as this business … continues to scale and internationalise. What will I be doing as a Frontend Developer? Delivering client-requested greenfield features developed in collaboration with product teams Continuing to scale the platform, opening it up to internationalisation as their customer numbers continue to grow Collaborating closely with internal engineering, product and design teams as well as More ❯