1 to 25 of 32 Part-Time Front-End Engineer (Client-Side Engineer) Jobs in the UK

End Engineer, you’ll be responsible for designing and executing the complete rebuild of our front-end application. You’ll work closely with product, design, and back-end engineering teams to deliver a seamless, performant, and scalable … user experience. You’ll also play a critical role in shaping our design system, driving front-end best practices, and mentoring the wider engineering team. This is a hands-on leadership role—one where you’ll write code, make architectural decisions, and guide the front-end direction of the company. Core Responsibilities Owning the architecture and implementation of the new front-end application. Building a high-performance, scalable, and maintainable React + Redux application. Designing and documenting a reusable, accessible, and elegant design system in collaboration with More ❯

Principal Front-End Engineer London (UK Remote - with the ability to join the team on occasion) A leading LegalTech scale up is on a mission to make legal help universally accessible. Combining human expertise with cutting-edge AI, this fast-growing company … largest Series A rounds in 2024 they’re expanding fast, and hiring an incredible team of passionate engineers. Now hiring a Principal Front-End Engineer to shape the future of AI-powered legal experiences. What you’ll be doing: Lead and build … beautiful, fast, user-focused apps and experiences Solve complex problems and make key technical decisions Own front-end best practices across multiple products Drive the quality and consistency of UI/UX across platforms Work in a fast-paced, product-driven, cross-functional team Mentor engineers More ❯

📍 Location: Hybrid/Remote/Office-based options available 🕒 Full-time | Competitive Salary + Benefits Are you a front-end expert with a passion for crafting beautiful, intuitive user interfaces? Do you thrive on turning design vision into reality using cutting-edge … to help shape the future of our digital experiences. This role is perfect for someone who’s hands-on with front-end tech, collaborative with cross-functional teams, and thrives in a modern DevOps-driven environment. 🔧 What You’ll Be Doing Build and Own … the Front-End: Implement sleek, high-performance interfaces using HTML, CSS, JavaScript, and frameworks like React or Angular. Component-Driven Development: Create modular, reusable UI components with a focus on maintainability and scalability. Design Collaboration: Partner closely with UX designers to bring wireframes and mockups to More ❯

at the intersection of cutting-edge technology and the urgent transformation of critical infrastructure. Role Description We’re looking for a Senior Front-End Engineer to join our team in the London Area, United Kingdom. This is a full-time, hybrid role … with flexibility to work remotely part of the week. You’ll take the lead in front-end initiatives, work closely with UI/UX designers and back-end engineers, and help shape how users interact with our web platforms built around AI and energy … experiences in the climate and AI space—we’d love to hear from you. Key Responsibilities Design, develop, and maintain high-quality front-end components using Next.js, React, and TypeScript. Build clean, scalable, and responsive interfaces based on design mock-ups and user needs. Work closely More ❯

Job Role: Software Engineer, Frontend Job Type: Full Time, Permanent Location: London, Hybrid Role purpose As a valued member of our engineering team, you will contribute to the development of our new web application, powered by a Headless CMS, using the latest frontend technologies. Working with More ❯

Job Title: Frontend Engineer – AI Tools & Applications Location: Abu Dhabi, UAE Job Type: Full-time About the Role: We are seeking a highly skilled Frontend Engineer to design, develop, and enhance user interfaces for AI-powered applications. You will collaborate closely with More ❯

Senior Frontend Engineer (Next.js, React Native) I’m working with a fast-paced, tech-focused, global technology platform that’s undergoing a multi-year transformation program to revolutionize its B2C services. Backed by substantial investment and part of a financially stable group, this company is embarking More ❯

Join Nscale as a Senior Frontend Engineer! Are you ready to build the next generation of cloud platforms for AI? Nscale is on a mission to challenge the hyperscalers with our vertically integrated GenAI cloud platform. We own the data centers, software, and applications that power … build and maintain our web-based cloud console, ensuring a consistent user experience across our platform. The ideal candidate has experience with front-end development, CLI design, and cloud platforms. You will write clean, well-tested code that follows modern UI/UX standards and work … support junior team members, fostering a culture of continuous learning. About You: Must-Have Skills, Experience & Qualifications 5+ years of experience in front-end development (HTML, CSS, JavaScript). Expert-level knowledge of TypeScript. Strong proficiency in React & Next.js. Experience consuming OpenAPI 3.0+ specs to build More ❯

Senior Frontend Engineer - JavaScript I'm looking for a Senior Frontend Engineer (React, TypeScript), who is looking to join a fast-growing company where over the last 5 years they have scaled their platform to 3+ Million users! They are an innovative More ❯

Job Title Lead-Software-Engineer (Frontend) Reports to Head of Engineering Location/work pattern UK based role – 1 day every other week in Manchester office Salary £70000 - £75000 What we do Vypr is a Manchester HQ’d Private Equity/Venture Capital backed SaaS business. … responsible for Driving best practices in frontend development, including code quality, accessibility, and UI/UX consistency. Collaborating with the Lead Backend Engineer to align frontend development with the overall platform strategy. Leading and mentoring engineers, fostering a high-performance culture aligned with Vypr’s values. More ❯

Senior Frontend Product Engineer (React/TypeScript) - £80 -115K + Equity + Benefits Hybrid (3 days/week in London) The Opportunity We're looking for senior product-focused engineers to help shape the future of our brand-new platform - one with zero tech debt More ❯

I am looking for a Senior Front End Engineer with expertise in React, to join a scaleup on a mission to transform UK healthcare with their innovative FinTech solutions. At a time when the healthcare system is evolving rapidly, you would be More ❯

Senior Frontend Engineer | FinTech/DeFi | Up to £120,000 p/a + Bonus + Liquid Equity 💻 Senior Frontend Engineer - Up to £120,000 per annum 🪙 Rising player in Decentralised Finance (DeFi) 💧 Up to £120,000 p/a + … in the world of decentralised finance. Want to play a key part in that journey? We're looking for a Senior Frontend Engineer, proficient in Typescript and React with the best engineering practices across optimisation, testing, responsive design and agile collaboration. Experience in the space and … a web3 stack isn't essential, but a keen interest goes a long way. If you're a Senior Frontend Engineer looking to play a part in this exciting journey and be significantly rewarded for your efforts, apply within or reach out to James for more More ❯

A leading company in the Renewable Energy space are on the hunt for a Senior Frontend Engineer to join their highly skilled engineering team! You'll come into the business to join their engineering function and help to spearhead the engineering of their frontend. They work More ❯

Product Engineer (Frontend) | £140,000 | TypeScript | Vue/React | Hybrid (1 day a week in London) My client are a cutting-edge AI company revolutionising AI-driven automation by transforming human expertise into trustworthy AI models . Their platform enables businesses to build no … AI pioneers, their solutions power AI adoption at Fortune 500 giants such as Sony, Boston Scientific, and Genentech . As a Product Engineer (Frontend) , you'll play a key role in crafting high-fidelity, interactive web applications that bring AI to life. You'll collaborate with … etc.) If this sounds like your next challenge, click APPLY , and I (Sam Barcia) will be in touch to discuss further! Product Engineer (Frontend) | £140,000 | TypeScript | Vue/React | Hybrid (1 day a week in London More ❯

Senior Front End Engineer - REMOTE/React.js/Typescript/Javascript Key Skills: React.js, Typescript, REST APIs, Javascript ***FULL REMOTE WORKING BUT MUST BE BASED IN UK*** An exciting opportunity is on offer for a Senior Front End … a innovative and growing SaaS business, with full remote working offered for candidates based in UK. The chosen Senior Front End Engineer will have strong skills in React, Typescript, Javascript and building Rest APIs. The successful candidate with have vast experience in … or SaaS business (software as a service) , ideally with start up experience. There is a huge opportunity for a Front End Engineer to progress quickly within this business and take ownership of large parts of the project. Excellent salary and benefits on More ❯

Senior Front End Engineer - REMOTE/React.js/Typescript/Javascript Key Skills: React.js, Typescript, REST APIs, Javascript ***FULL REMOTE WORKING BUT MUST BE BASED IN UK*** An exciting opportunity is on offer for a Senior Front End … a innovative and growing SaaS business, with full remote working offered for candidates based in UK. The chosen Senior Front End Engineer will have strong skills in React, Typescript, Javascript and building Rest APIs. The successful candidate with have vast experience in … or SaaS business (software as a service) , ideally with start up experience. There is a huge opportunity for a Front End Engineer to progress quickly within this business and take ownership of large parts of the project. Excellent salary and benefits on More ❯

Senior Front End Engineer - REMOTE/React.js/Typescript/Javascript Key Skills: React.js, Typescript, REST APIs, Javascript ***FULL REMOTE WORKING BUT MUST BE BASED IN UK*** An exciting opportunity is on offer for a Senior Front End … a innovative and growing SaaS business, with full remote working offered for candidates based in UK. The chosen Senior Front End Engineer will have strong skills in React, Typescript, Javascript and building Rest APIs. The successful candidate with have vast experience in … or SaaS business (software as a service) , ideally with start up experience. There is a huge opportunity for a Front End Engineer to progress quickly within this business and take ownership of large parts of the project. Excellent salary and benefits on More ❯

Senior Front End Engineer - REMOTE/React.js/Typescript/Javascript Key Skills: React.js, Typescript, REST APIs, Javascript ***FULL REMOTE WORKING BUT MUST BE BASED IN UK*** An exciting opportunity is on offer for a Senior Front End … a innovative and growing SaaS business, with full remote working offered for candidates based in UK. The chosen Senior Front End Engineer will have strong skills in React, Typescript, Javascript and building Rest APIs. The successful candidate with have vast experience in … or SaaS business (software as a service) , ideally with start up experience. There is a huge opportunity for a Front End Engineer to progress quickly within this business and take ownership of large parts of the project. Excellent salary and benefits on More ❯

Senior Front End Engineer - REMOTE/React.js/Typescript/Javascript Key Skills: React.js, Typescript, REST APIs, Javascript ***FULL REMOTE WORKING BUT MUST BE BASED IN UK*** An exciting opportunity is on offer for a Senior Front End … a innovative and growing SaaS business, with full remote working offered for candidates based in UK. The chosen Senior Front End Engineer will have strong skills in React, Typescript, Javascript and building Rest APIs. The successful candidate with have vast experience in … or SaaS business (software as a service) , ideally with start up experience. There is a huge opportunity for a Front End Engineer to progress quickly within this business and take ownership of large parts of the project. Excellent salary and benefits on More ❯

Senior Front End Engineer - REMOTE/React.js/Typescript/Javascript Key Skills: React.js, Typescript, REST APIs, Javascript ***FULL REMOTE WORKING BUT MUST BE BASED IN UK*** An exciting opportunity is on offer for a Senior Front End … a innovative and growing SaaS business, with full remote working offered for candidates based in UK. The chosen Senior Front End Engineer will have strong skills in React, Typescript, Javascript and building Rest APIs. The successful candidate with have vast experience in … or SaaS business (software as a service) , ideally with start up experience. There is a huge opportunity for a Front End Engineer to progress quickly within this business and take ownership of large parts of the project. Excellent salary and benefits on More ❯

Senior Front End Engineer - REMOTE/React.js/Typescript/Javascript Key Skills: React.js, Typescript, REST APIs, Javascript ***FULL REMOTE WORKING BUT MUST BE BASED IN UK*** An exciting opportunity is on offer for a Senior Front End … a innovative and growing SaaS business, with full remote working offered for candidates based in UK. The chosen Senior Front End Engineer will have strong skills in React, Typescript, Javascript and building Rest APIs. The successful candidate with have vast experience in … or SaaS business (software as a service) , ideally with start up experience. There is a huge opportunity for a Front End Engineer to progress quickly within this business and take ownership of large parts of the project. Excellent salary and benefits on More ❯

Senior Front End Engineer - REMOTE/React.js/Typescript/Javascript Key Skills: React.js, Typescript, REST APIs, Javascript ***FULL REMOTE WORKING BUT MUST BE BASED IN UK*** An exciting opportunity is on offer for a Senior Front End … a innovative and growing SaaS business, with full remote working offered for candidates based in UK. The chosen Senior Front End Engineer will have strong skills in React, Typescript, Javascript and building Rest APIs. The successful candidate with have vast experience in … or SaaS business (software as a service) , ideally with start up experience. There is a huge opportunity for a Front End Engineer to progress quickly within this business and take ownership of large parts of the project. Excellent salary and benefits on More ❯

Senior Front End Engineer - REMOTE/React.js/Typescript/Javascript Key Skills: React.js, Typescript, REST APIs, Javascript ***FULL REMOTE WORKING BUT MUST BE BASED IN UK*** An exciting opportunity is on offer for a Senior Front End … a innovative and growing SaaS business, with full remote working offered for candidates based in UK. The chosen Senior Front End Engineer will have strong skills in React, Typescript, Javascript and building Rest APIs. The successful candidate with have vast experience in … or SaaS business (software as a service) , ideally with start up experience. There is a huge opportunity for a Front End Engineer to progress quickly within this business and take ownership of large parts of the project. Excellent salary and benefits on More ❯

Senior Front End Engineer - REMOTE/React.js/Typescript/Javascript Key Skills: React.js, Typescript, REST APIs, Javascript ***FULL REMOTE WORKING BUT MUST BE BASED IN UK*** An exciting opportunity is on offer for a Senior Front End … a innovative and growing SaaS business, with full remote working offered for candidates based in UK. The chosen Senior Front End Engineer will have strong skills in React, Typescript, Javascript and building Rest APIs. The successful candidate with have vast experience in … or SaaS business (software as a service) , ideally with start up experience. There is a huge opportunity for a Front End Engineer to progress quickly within this business and take ownership of large parts of the project. Excellent salary and benefits on More ❯