26 to 50 of 84 Front-End Developer (Client-Side Developer) Jobs in the UK

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 ...

critical applications used directly by UK national security customers. This is not product maintenance work. You will design, build and own modern front-end architectures that operate in complex, secure environments where performance, accessibility and resilience matter. The work is challenging and high impact. The environment … delivery focused. The opportunity for progression is significant. What You’ll Be Doing Designing and building secure, scalable front-end applications using modern JavaScript. Architecting front-end solutions and owning technical decisions within small, autonomous teams. Working closely with UX designers ...

Front End Developer - FinTech - Newcastle (Tech stack: Front End Developer, React, TypeScript, Websockets, SignalR, Containers, Orchestration, UX, Usability, Programmer, Developer, Architect, Front End Developer … products. The successful candidate will bring: A 2:1 or higher degree in Computer Science (essential). Strong recent experience with modern front-end frameworks, particularly React, alongside TypeScript. Background working with real-time communication tools such as Websockets or SignalR. Familiarity with containerisation and orchestration ...

critical infrastructure. As a Front End Developer you will: Design, develop, deploy, and maintain front-end applications as part of autonomous DevOps teams. Work closely with end-users and internal teams to understand requirements and deliver … delivery lifecycle, from R&D and prototyping to production-ready systems. Collaborate with UX designers to build user-focused, accessible, and performant front-end applications. Apply best practices in testing, secure coding, and continuous delivery. What they're looking for: In-depth knowledge of JavaScript (vanilla ...

critical infrastructure. As a Front End Developer you will: Design, develop, deploy, and maintain front-end applications as part of autonomous DevOps teams. Work closely with end-users and internal teams to understand requirements and deliver … delivery lifecycle, from R&D and prototyping to production-ready systems. Collaborate with UX designers to build user-focused, accessible, and performant front-end applications. Apply best practices in testing, secure coding, and continuous delivery. What they're looking for: In-depth knowledge of JavaScript (vanilla ...

Frontend Developer React & TypeScript Our client is looking for a talented Frontend Developer with strong expertise in React and TypeScript to build engaging, responsive web and mobile interfaces. Youll work closely with backend engineers and designers to transform complex requirements … using React and TypeScript Collaborate with UX/UI designers to deliver pixel-perfect, user-friendly interfaces Build reusable components and manage client-side application state Optimise performance and ensure accessibility best practices (WCAG) Write clean, testable code and take part in peer code reviews What ...

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 ...

Front End Developer – FinTech – Newcastle (Tech stack: Front End Developer, React, TypeScript, Websockets, SignalR, Containers, Orchestration, UX, Usability, Programmer, Developer, Architect, Front End Developer … products. The successful candidate will bring: A 2:1 or higher degree in Computer Science (essential). Strong recent experience with modern front-end frameworks, particularly React, alongside TypeScript. Background working with real-time communication tools such as Websockets or SignalR. Familiarity with containerisation and orchestration ...

The IPO is a modern organisation which depends on its IT services to operate and innovate effectively. In order to provide up to date services to our customers both nationally and internationally systems need to ...

The IPO is a modern organisation which depends on its IT services to operate and innovate effectively. In order to provide up to date services to our customers both nationally and internationally systems need to ...

operational significance. As a Front End Developer, you will: Build and maintain modern, responsive front-end interfaces for secure systems and applications. Lead front-end design and architecture across component-based frameworks and JavaScript … stacks. Collaborate closely with UX, API and system engineering teams to translate design into production-grade front-end code. Apply secure coding standards, accessibility principles and testing practices (Jest, Jasmine, Cypress). Contribute to continuous delivery pipelines and advocate DevOps ways of working within your team. ...

Looking for a frontend role where you can make a positive impact on people s lives? This is one of those rare opportunities where the projects you work on can help someone with early detection ...

Looking for a frontend role where you can make a positive impact on people’s lives? This is one of those rare opportunities where the projects you work on can help someone with early detection ...

large UK insurance organisation, working on a major internal digital platform used across multiple business units. This is a UI-led Front-End role focused on building robust, scalable user interfaces for complex, high-volume systems. It’s not a greenfield toy app – it’s proper … enterprise engineering. You’ll be joining a small, senior product team and will have real ownership over front-end standards, component design, and UI quality across the platform. The Role This is a hands-on UI Developer position, working in a close ...

Front-end Developer (Public Sector) 6 Month Contract - £575/day Inside IR35 Role Details * Location: London, Bristol, or Manchester (flexible, most team in London) - minimum 2 days/week onsite at base * Duration: 6 months | Rate: £575/day inside IR35 ...

scalable solutions using the latest tools in JavaScript, cloud, and DevOps technologies. Key Responsibilities: Develop RESTful microservices using Node.js Build responsive, accessible front-end applications using JavaScript or TypeScript with React Work with modern frameworks and tooling such as Next.js and Vite Deploy and manage applications ...

Front End Developer - Active SC Up to £550 per day - Inside IR35 London/Remote 6 months My client is an instantly recognisable consultancy who require Front End Developers with Active SC Clearance to join … critical programme for an end client within the Public Sector. Key Requirements: Proven commercial experience working as a Front-End Developer within the Public Sector. Active SC Clearance. NPPV3 Clearance eligibility. Hands-on React and TypeScript experience across ...

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 ...

digital communication assets and activations for integrated campaigns for all of our VCCP clients. WHAT WE’RE LOOKING FOR: The Senior Frontend Developer is responsible for the user interface and interaction logic of our digital products. You will build responsive, data-driven interfaces that handle everything ...

Front End Developer/Engineer (Vue 3) Billericay/WFH to £75k Are you a JavaScript web technologist seeking an opportunity to work with a modern tech stack on Greenfield projects? You could be progressing your career in a senior, hands … solutions provider that has experienced great success in the last year and is growing as a result. As a Front End Developer you will take ownership of projects within an Agile development environment, with a focus on Vue 3 front ...

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 ...

accountability for the teams assigned deliverables. The role will also require the investigation, diagnosis and fix of any system issues. A Senior Developer is expected to contribute to the technical strategy for the department. As a multi-skilled individual with strong front end ...

Ionic experience to take ownership of the development experience across web and mobile platforms. This is a hands-on role focused on front-end engineering, with ownership of UI/UX design and the mobile experience. You’ll work closely with product, QA, and other front … developers to shape how products look, feel, and behave across devices. You’ll be delivery-focused, pragmatic, and confident making front-end and UX decisions while owning a modern Angular/Ionic codebase within an Agile environment. Responsibilities Building and maintaining responsive front-end ...