1 to 25 of 33 Permanent Front-End Engineer (Client-Side Engineer) Jobs in the UK

Senior Front-End Engineer Location: London (Onsite, 5 days per week) Salary & Benefits: £80,000- £120,000 + Benefits Investigo are partnered with an innovative AI technology company at the forefront of the video intelligence industry. They're on a mission to transform the way businesses leverage video data through next-generation … AI-powered solutions, and they're looking for a Senior Front-End Engineer to help shape and deliver their cutting-edge platform. This is an opportunity to join a VC-backed, high-growth scale-up where you'll work alongside world-class engineers and product specialists from some of the most recognised More ❯

About the role: At Holland & Barrett, we're on a mission to make health and wellness a way of life for everyone — and technology is a key enabler of that vision. As we evolve into a leading omni-channel retailer More ❯

About xAI xAI's mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge. Our team is small, highly motivated, and focused on engineering excellence. This organization is for individuals More ❯

About xAI xAI's mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge. Our team is small, highly motivated, and focused on engineering excellence. This organization is for individuals More ❯

Excellent opportunity for Senior Front-End Engineer looking to join a forward-thinking company producing award-winning software used by leading businesses across the globe. The successful Senior Frond End Engineer will need to have extensive commercial experience using ReactJS and should be comfortable working to … a specific build and deployment process. Skills required: Extensive ReactJS experience Be familiar with Agile development practices, including Continuous Integration and 5+ years' experience in enterprise level front-end web development: Solid understanding of semantic mark-up, including HTML5, CSS3 (comfortable with CSS animations and flexbox). Extensive ReactJS experience JavaScript, TypeScript Ability to mentor junior More ❯

Excellent opportunity for Senior Front-End Engineer looking to join a forward-thinking company producing award-winning software used by leading businesses across the globe. The successful Senior Frond End Engineer will need to have extensive commercial experience using ReactJS and should be comfortable working to … a specific build and deployment process. Skills required: Extensive ReactJS experience Be familiar with Agile development practices, including Continuous Integration and 5+ years' experience in enterprise level front-end web development: Solid understanding of semantic mark-up, including HTML5, CSS3 (comfortable with CSS animations and flexbox). Extensive ReactJS experience JavaScript, TypeScript Ability to mentor junior More ❯

About Apron Apron was started by a group of people who'd spent years building products for a number of global fintech companies. But there was one problem that no-one was solving. Business payments. The kind that buy tomatoes More ❯

Role Overview As a Senior Software Engineer at TP ICAP you will be part of a talented team delivering business critical software for the internal broking division and their external customer base. You will work within an Agile environment, from design through to implementation, with a strong focus on continuous improvement whilst working collaboratively as part More ❯

and gas development, coal inventory, and LNG flows, enabling businesses and organizations to make data-driven decisions with precision and confidence. Job Description: We are seeking a Front-End Senior Software Engineer to join our team and play a key role in designing, developing, and maintaining high-quality software solutions. The ideal More ❯

About Us Huguenots generates highly personalised solutions for fund management clients of all sizes, from start-up boutiques to global asset management firms, using our in-house investment reporting platform. All clients are assured of the attention to detail, effortless More ❯

About the company Our client is a seed stage DeFi startup with $9m funding and an engineering team of 6 people globally. Key Job Requirements At least 5 years in frontend or full-stack development. Strong expertise in More ❯

About the Role We are seeking for experienced Shopify Theme/Frontend Engineer with a strong background in building scalable, high-performance eCommerce platforms . You will work closely with product managers, UX/UI designers, and engineering teams to design, develop, and optimize Shopify storefronts using the Hydrogen framework in a headless architecture environment. This More ❯

Lead Software Engineer London (Hybrid 1x Per Month) Salary: Up to £100k + Benefits + Stock Options About Us Our client is a Insurtech Unicorn looking to expand their engineering team. With the opportunity to work on existing products which have generated millions in revenue to something new changing the landscape of the insurance … world, this is the perfect opportunity for a results driven and growth focussed Senior engineer looking to start an ambitious business. The Role We're seeking a Lead Fullstack Engineer to own the frontend architecture and elevate the B2C user experience across our digital products. This is a high-impact role requiring … boost team performance. Our Approach to AI We embrace AI as a catalyst for smarter work enabling faster iteration, enhanced creativity, and focused impact. As a Lead Engineer, you'll champion intentional AI adoption to empower your team and unlock new levels of productivity. Benefits We value and reward our people with: Private Medical Insursance, Company More ❯

Front End React Engineer (TypeScript, API's, some C#/Angular)Gatwick (1 day per week in office).£45000 - £60000 + Package This role cannot offer Visa Sponsorship for applicants. Your new company I am engaged on a project to recruit a React Front End Developer to More ❯

intelligent software systems that integrate agentic AI with scientific reasoning to accelerate research, development, and decision-making. We are seeking a Senior Front End Software Engineer to drive the design, integration, and deployment of web-based applications that enable seamless human-AI collaboration. This role is part of a bold, agentic initiative … is a rare opportunity to shape a greenfield product at the intersection of usability, flexibility, and advanced reasoning. Key Responsibilities Architect, develop, and maintain high-quality, testable front-end code and workflows that align with complex scientific and analytical use cases. Translate user stories, wireframes, and prototypes into production-ready features with a focus on clarity … and performant UIs optimized for data-rich and interactive workflows. Implement DevOps/GitOps practices for automated testing, deployment, and monitoring. Ensure security, scalability, and observability of front-end services in cloud environments (AWS). Ensure robust unit, integration, and end-to-end test coverage to maintain long-term code quality. An More ❯

Job Description We're now recruiting a Senior Frontend Engineer to join our Investcentre team and help in enhancing our successful award-winning platform. You will be joining a team which has a philosophy of continuous improvement, and a strong focus on engineering excellence. What does the job involve? Agile methodologies and a passion for continuous More ❯

Want to craft interfaces that captivate millions? We're looking for a Senior Front End Engineer to lead the development of immersive, gamified user experiences. You'll work with modern frameworks and animation libraries to build responsive, high-performance interfaces that users love. What You'll Be Doing: Designing and developing UI … mentoring junior engineers Collaborating across teams to deliver seamless experiences Managing multiple projects with a focus on quality and performance What You'll Bring: 5+ years of front-end development experience Proficiency in React, Next.js, TypeScript, Node.js, CSS Experience with animation libraries (GSAP, Framer Motion, etc.) Strong understanding of responsive design and UI optimization Excellent communication More ❯

Senior Frontend Engineer - React, Typescript, Linux, HTML, Financial services, Front End - Hybrid … London, Permanent. - £75,000 p.a - £86,000 p.a My client, a leading global financial organisation, is currently looking for an experienced Senior Front End Engineer to join the organisation. You will be joining core Credit Flow pre-trade engineering team and will be working on UI initiatives and providing hands … beneficial Background in financial services or strong understanding of financial systems and concepts is highly beneficial This is an excellent opportunity for an experienced Front End Engineer to join a rapidly evolving organization. More ❯

far, and raised over $200 million in funding. And we're only just getting started. About the role We're looking for a Senior Front End Engineer to help shape the future of our B2C products at Zego. This is an exciting opportunity to work at the heart of a cross-functional More ❯

Senior Frontend Engineer (Next.js/React) High-Growth SaaS | Build Elegant, User-First Products In partnership with Robert Half Limited. We're a high-growth SaaS company scaling fast, and we're looking for a Senior Frontend Engineer to join our team. This is a chance to shape products used by thousands More ❯

Senior Frontend Engineer $8k–$10k A full-time role for a senior engineer. It’s your chance to take full ownership of frontend projects from design to delivery with minimal supervision! About Ballerine Ballerine is a high-growth, early-stage startup building an open-source platform for identity verification and risk management in the financial sector. … It’s a fast-paced team preparing for Series A funding — and looking for a Senior Frontend Engineer to join our core team. • Senior engineer • Ready to thrive in startup environments • English (C1+) • Deliver independently while collaborating with a world-class team Requirements • 7+ years of commercial engineering experience (only truly senior More ❯

Frontend Engineer | TypeScript & React | Salary £55-70k | Hybrid (flexible hybrid working in central Cambridge) Would you like to join a start-up that is helping the world identify more effective treatments for disease, and ultimately saving lives I’m working with an established start-up, who leverage AI & Machine Learning to increase the efficacy of … range of illnesses.It’s full steam ahead with enhancing their product range further and due to continued growth of their customer base, they need a new Frontend Engineer to join the team.You’ll utilise your React & TypeScript skills to progress the UI of various products, whilst maintaining a strong consideration for UX and accessibility for users.This … product range that is having a monumental impact on the lives of many people across the globe! What you’ll need A proven background as a Frontend Engineer Excellent experience with React & TypeScript They’re using Vite & Next.js across various projects, so experience with either of these tools is beneficial Some appreciation for UX and how More ❯

accelerated scientific research. This role will be focused on delivering software which integrates frontier AI research into the workflow of scientists. This will involve designing and implementing front-end tools for novel interaction patterns with generative models, LLMs, and scientific visualizations. This role will be foundational in establishing our UI best practices, ensuring we have consistent … web-based applications Build robust and performant user interfaces for data-heavy applications Translate user requirements into intuitive user experiences Develop the standards and systems for our front-end design and development Design and build out our component library and front-end tooling Help build our first design system to unify our … look and feel across applications Develop novel front-end interfaces which allow scientists to perform AI-accelerated research Push the boundaries of human-computer interaction for chemistry and chemical engineering applications Help design and build data visualizations for scientific and engineering data What We're Looking For 5+ years of professional experience as a frontend engineer More ❯

Software Engineer I - Frontend Focus (Viator) Oxford or London, UK Viator, a Tripadvisor company, is the leading marketplace for travel experiences. We believe that making memories is what travel is all about. And with 300,000+ travel experiences to explore-everything from simple tours to extreme adventures (and all the niche, interesting stuff in between)-making … our inventory. We provide the tools which help our customer services team provide world class service to travellers and operators internationally. We're looking for a Software Engineer I Frontend Focus to join our fast-growing team. Viator is a remote first company. This role is open to candidates based in Oxford or London in the More ❯

Software Engineer I - Frontend Focus (Viator) Oxford or London, UK Viator, a Tripadvisor company, is the leading marketplace for travel experiences. We believe that making memories is what travel is all about. And with 300,000+ travel experiences to explore-everything from simple tours to extreme adventures (and all the niche, interesting stuff in between)-making … our inventory. We provide the tools which help our customer services team provide world class service to travellers and operators internationally. We're looking for a Software Engineer I Frontend Focus to join our fast-growing team. Viator is a remote first company. This role is open to candidates based in Oxford or London in the More ❯