20 of 20 Front-End Developer (Client-Side Developer) Jobs in Central London

Front-End Developer (Contract) Outside IR35 | 3 months | Fully remote (UK-based) | Immediate start We’re working with an established AgriTech startup in a strong period of growth and demand, looking for an experienced Front-End–leaning Developer … exciting phase. The Role You’ll play a key role in the upgrade of an internal portal, with a strong focus on: Front-end/UI improvements and user experience enhancements Supporting API upgrades and integrations Working closely with engineers to deliver clean, scalable solutions quickly ...

Senior Frontend Engineer Full remote role with office in London, 12 month contract, Outside IR35 A global consumer-facing technology organisation is refining its web strategy to focus on building secure, scalable, and high-quality ...

Senior Frontend Engineer - London Based 🚀 They've been named a Disruptor in the industry for their mission that is putting users in control of how their data is being used! ⚒️ Tech stack: React, JavaScript, Next.js ...

Want to build from the ground up for a leading company? Best of both worlds right.... Well you can! We are currently partnered with a globally leading iGaming company who have opened a brand new ...

Senior Front End Developer Senior Front End Developer – Global Workforce Technology Innovator – London (Tech stack: React, React Native, TypeScript, JavaScript (ES6+), HTML, CSS, Component Libraries, Design Systems, State Management (Redux, Zustand, MobX, Apollo … mobile platforms, while influencing architectural decisions and raising the bar for engineering excellence. You’ll be working in a modern front-end environment that includes React , React Native , TypeScript, component-driven development, and a rapidly evolving design system. The team values engineers who are curious, collaborative ...

looking for a Developer to come and join our technology team, whilst you’ll be a Front-End focused, we also like to dabble in a spot of Python, PHP or whatever might be needed to deliver the best solution. You will … first instance with a view to be extended. What the day to day looks like... You’ll be delivering high-quality Front-End solutions that are integral to the customer’s goals Undertake feasibility studies - 'can it be done?’ Produce estimates - 'how long will it take ...

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 … 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 ...

Frontend Developer Up to £70,000 + Bonus Central London – Flexible Hybrid Options Health-Tech A fast-growing healthtech company is seeking a Frontend Developer to help build a user-centric SaaS platform transforming pharmaceutical R&D. You’ll contribute … architecture, advance component systems, and collaborate closely with product and design to elevate usability and responsiveness. As a Frontend Developer, you will have: Strong commercial experience in React with TypeScript Exposure to UI/UX principles and design collaboration Background in healthtech or data-driven applications ...

Senior Frontend Developer Up to £90,000 Central London - Flexible Hybrid Options Health-Tech A start-up within the health space are seeking a Senior Frontend Developer to lead a high performing squad of engineers building a unique SAAS platform which … 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 ...

Senior Frontend Developer (React.js) | Brand New Trading Payments Desk | £130,000 + Bonus + Benefits | London Hybrid I am looking for a Senior Frontend Engineer with React focus for a Trading House that build cross asset trading systems. The FinTech are building from the ground … terms of the build. Responsible for developing new features for the public website and client portal. 💰This Senior Frontend developer role is paying up to £130,000 + bonus + benefits 📍Located in London City, St Paul's, with 3 days per week from ...

Senior Frontend Developer – TypeScript, React 2 days p/week in London Up to £100k Would you like the opportunity to join an early-stage start-up who are looking to revolutionise the logistics space? They recently closed a round of funding and are now seeking … Senior Frontend Developer, who’s confident working with React and TypeScript. As a Senior Frontend Developer, you will be responsible for taking their product to the next level. You will be directly responsible for developing and maintaining their frontend application, while working ...

Senior Frontend Developer (Angular) Salary: Up to £70k Location: London (3 days a week) Senior Frontend Developer (Angular) - Would you like the opportunity to work for a market-leading organisation, using cutting-edge technology and data science to deliver smarter, faster solutions … management (using RxJS and NgRx). Understanding of Software Design Patterns and Test-Driven Development. If you're an experienced Senior Frontend Developer (Angular) interested in joining an ambitious company with huge personal growth potential, please apply ...

closely with backend and AI teams to embed semantic search and conversational UI Ensure performance, accessibility, and security best practices Contribute to front-end architecture and long-term platform direction What They’re Looking For 3+ years’ front end development experience Strong … experience with React, JavaScript, and TypeScript Experience with modern front-end patterns, component libraries, and state management Exposure to cloud-hosted applications (Azure preferred) Interest or experience in AI-driven UI/UX Comfortable working in evolving, product-led engineering teams ...

mathematical concepts into accessible UX flows Use functional and declarative programming patterns to create composable, reusable, testable UI components Architect and maintain client-side state management solutions that handle large, rapidly changing datasets Optimise performance using techniques such as memoisation, batching, Web Workers, and incremental rendering ...

fully automated, AI-driven marketing SaaS client that operate within the iGaming space. They are looking for a Frontend Developer to join their team in London. Responsibilities: You will be responsible for managing their frontend portal, where users are interacting with the system. ...

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 ...

Front-End Lead | Data-Heavy Platform We’re partnering with a fast-growing technology company building a mission-critical, data-intensive platform used at scale. The product is live, trusted, and entering its next phase of growth — and front-end architecture … central to what comes next. They’re hiring a Front-End Lead to take ownership of front-end strategy, architecture, and engineering standards, working closely with the CTO and senior engineers. What You’ll Do Own and evolve a large React/ ...

Front-End Lead | Data-Heavy Platform We’re partnering with a fast-growing technology company building a mission-critical, data-intensive platform used at scale. The product is live, trusted, and entering its next phase of growth — and front-end architecture … central to what comes next. They’re hiring a Front-End Lead to take ownership of front-end strategy, architecture, and engineering standards, working closely with the CTO and senior engineers. What You’ll Do Own and evolve a large React/ ...

build something great. The Role & Culture We are a team that prioritizes delivery over desk-time . We are looking for a developer who takes pride in their work and understands the "startup rhythm." We don't watch the clock, but we do expect our team ...

experts to deliver scalable, high-performance UIs that support real-time trading and analytics. Key Responsibilities Design and develop responsive, low-latency front-end trading systems using React. Build dashboards and visualisation tools for Fixed Income market data and trade execution. Collaborate with traders, quants … back-end engineers to deliver seamless UI experiences. Contribute to architectural decisions and front-end performance tuning. Required Skills & Experience Expertise in React.js and modern JavaScript (ES6+) Proven experience delivering front-end applications in electronic trading environments Strong understanding ...