22 of 22 Permanent Front-End Developer (Client-Side Developer) Jobs in London

team of DV Cleared technologists to help design and deliver next-generation solutions that keep our nation secure. The Opportunity As a Front-End Developer, you'll play a key role in building intuitive, high-performance user interfaces for secure government … This is a hands-on technical role for someone who's passionate about modern web development, user experience, and crafting elegant, reliable front-end solutions. Key Responsibilities Develop high-quality, responsive, and accessible web applications using HTML, CSS, and JavaScript . Build interactive, user-focused front ...

Job Title: Frontend Engineer – React/TypeScript/Next.js Location: London (Hybrid – 2‐3 days in office) Salary: £70,000 – £75,000 + Equity About the Company You’ll join a fast‐scaling SaaS business ...

Senior Frontend Engineer (Contract)/React/TypeScript/Outside IR35/6 months/Immediate Start Evantis Technology is supporting a product engineering team seeking to hire a Senior Frontend Engineer to help evolve ...

high-performance user interfaces. This role will involve contributing to new product features, improving existing functionality, and helping shape the overall front-end architecture of the platform. Key Responsibilities • Develop modern, responsive web applications using front-end frameworks and best practices • Translate …/UX designs into clean, efficient, and maintainable code • Build reusable components and scalable front-end architecture • Work closely with backend developers to integrate APIs and ensure seamless functionality • Optimise applications for speed, performance, and scalability • Identify and resolve front-end performance ...

engineering. This is a true 50:50 hybrid role : youll shape the products visual identity and user experience and build the front-end that brings it to life. Youll work on a mobile-first, AI-powered platform used by thousands of legal professionals worldwidesimplifying complex workflows … deliver intuitive, responsive interfaces for a global SaaS and mobile product with a strong emphasis on mobile-first UX. Build high-quality front-end components using React, JavaScript, TypeScript, HTML and CSS within a .NET ecosystem. Collaborate closely with product managers, engineers, and legal SMEs ...

Senior Software Engineer - Frontend Leaning 🚀 📍 Hybrid, 2-3 days a week in London 💸 Salary £80k - £95k 🚙 Company: join a startup with a world-class team who are using AI to shake up the automotive industry... ...

I'm currently supporting a leading global quantitative investment firm who are looking for a Frontend Engineer to join their Compliance & Legal Technology team. This team builds mission-critical software used across global trading operations ...

Senior Front End Engineer – React/Next.js £140,000–£200,000 Base + Serious equity Rare chance to join a very early stage AI platform that has just raised an unusually ...

Frontend Engineers Wanted —£177,000 (Senior x2 | Staff x1 | Remote-first | 1 day/week Central London) A high-growth, Series-funded tech company is quietly building some of the most complex, high-stakes infrastructure ...

We’re partnering with one of our fast-scaling Fintech clients who are looking to bring a talented Frontend Engineer on board to help shape the next phase of their product and growth. This is ...

Frontend Engineer Engineering | London (Hybrid) We’re partnering with a global fintech platform building modern infrastructure for digital payments, on-chain banking and investment services. The business operates across 140+ countries, integrates with 30+ trading ...

Frontend Developer/Fullstack Hybrid - Twice a week in Central London Global Law firm We are looking for a Frontend Developer with fullstack capabilities to join a collaborative team within a global law firm. You will be the team’s frontend specialist … shape and refine requirements • Contributing to testing, documentation and ongoing improvements across the team What we’re looking for • Expert in modern front-end tech - Vue (mandatory), React/Angular (nice to have) • C#/.Net - this will be a small part of the role ...

Senior Front End Developer - Angular - Permanent - Hybrid London 2 days a week - £100 - 120k base Join a high-growth fintech firm as a Senior Frontend Developer , building the interfaces that power complex financial decisions. You will spend ...

Front End React Developer, React, JavaScript, NW London to £80K A leading financial software company are looking for a great JavaScript developer who is proficient with React js. Your primary focus will be on developing user interface components … infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product is important. Responsibilities Working in a team of Front-End engineers Writing clear & concise code Working closely with Back-End engineers Participate in architecture design code reviews API design with ...

Senior Front End Developer/Engineer (TypeScript React) London/WFH to £120k Are you a technologist with start-up experience looking for your next opportunity? You could be progressing your career at a tech start-up that is producing … Equity Impactful role with excellent career progression as the company scales Hybrid working Pension Your role: As a Senior Front End Developer within a small team, you will build and implement new features across the full tech stack, with a focus ...

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 ...

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 … 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 ...

Senior AI Frontend Developer - £650, Outside IR35 - Hybrid OR Remote (London) 🏠 We are the exclusive talent partner on behalf of a seed start-up ($6m) who're building AI agents for the real estate market. They're automating tasks that currently make up a $200bn labour … long term extension possibility with this, initially signed off at 3 months and already extensions are being discussed ⚡ 🏠 Senior AI Frontend Developer - £650, Outside IR35 - Hybrid OR Remote (London ...

closely with people across the business to define and realise our next generation of products. The Role We are looking for a Front-end Engineer with React, Next.js, and solid UX grounding to work alongside our product and technology teams. The role is ideal … will jointly devise new capabilities and features with a focus on usability. You will also be responsible for refining our approach to front-end development, and will be part of a working group responsible for defining our approach to user experience. You will also have ...

React, Typescript, Tailwind, MobX Neulinx is partnering with a growing fintech SaaS startup who are looking to hire a mid level Frontend Developer . Our client is transforming accounting through automation. Backed by top-tier investors and led by proven founders from the finance ...

Front End Software Developer - Central London - React, Typescript and Tailwind … fantastic, award winning start-up company in central London looking to hire an ambitious, talented and passionate Front End Developer to join our growing team and focus on React, Typescript and Tailwind CSS Working in a fast paced development environment ...

mental well-being, to specific longevity therapies and supplemental guidance. We are looking for a curious and motivated iOS/Frontend Developer Intern (Mandarin speaker) to join our NetMind Life team, working on our consumer app that uses AI to translate health data and goals into ...