76 to 100 of 122 Senior Front-End Engineer (Client-Side Engineer) Jobs in the UK

Unitary is a remote-first AI startup building Virtual Agents for midmarket customers. We seek a senior React engineer to own frontend interfaces, reimagine our frontend into a scalable platform, and blend product thinking with engineering excellence. You will collaborate with product ...

Encord is building the universal data layer for AI, powering 300+ teams with data curation, annotation, and evaluation across the AI lifecycle. We are seeking engineers who enjoy tough frontend work, rendering large 3D/ ...

innovation, LSEG is a place where everyone can grow, develop and fulfil your potential with meaningful careers.ROLE PROFILE:We are seeking a Senior Frontend Developer to join our Customers Identity & Access Management team at LSEG. You will play a pivotal role in maintaining and evolving our JavaScript … clean code, automation, and continuous improvement.* Excellent interpersonal skills and a passion for developer experience and security.ROLE PROFILE: We are seeking a Senior Frontend Developer to join our Customers Identity & Access Management team at LSEG. You will play a pivotal role in maintaining and evolving our JavaScript ...

innovation, LSEG is a place where everyone can grow, develop and fulfil your potential with meaningful careers. ROLE PROFILE:We are seeking a Senior Frontend Developer to join our Customers Identity & Access Management team at LSEG. You will play a pivotal role in maintaining and evolving our JavaScript … clean code, automation, and continuous improvement. Excellent interpersonal skills and a passion for developer experience and security. ROLE PROFILE:We are seeking a Senior Frontend Developer to join our Customers Identity & Access Management team at LSEG. You will play a pivotal role in maintaining and evolving our JavaScript ...

MintNeuro in London seeks a Senior Digital Design Engineer to own front-end digital design and verification for next-generation mixed-signal ASICs used in implantable neural interfaces. You will write clean Verilog/ ...

seeks an experienced Senior Front End Developer to lead the front-end delivery of a greenfield customer portal within a UK financial services remediation programme. You will build a secure, scalable ...

moving from "start-up" to "scale-up," and we are looking for a Senior Front End Engineer . This isn't just an ordinary Engineering role; its an opportunity to disrupt a legacy industry … come together in the product and within the broader Perk platform (travel, spend). Some examples of what it means to be a Senior at Perk Shape the bigger picture. You won't just build features, you'll refine the what to build and why . At Perk ...

Eucalyptus in Greater London is looking for a Senior Frontend Web Engineer to take ownership of its frontend platform. Your role will focus on designing and executing growth-driven experiments to enhance user engagement and retention while collaborating with cross-functional teams. ...

We are managing this recruitment internally and respectfully request no agency inquiries. Secondmind is an Equal Opportunity Employer committed to fair, equitable treatment throughout the recruitment process and beyond. We actively champion applications from all ...

Citi London is seeking a Senior UI Software Engineer to join the FX Client Platforms team. You will lead design and delivery of trading GUIs for internal and external traders, owning the full dev lifecycle. Hybrid work model ...

Admiral Group Plc is seeking an experienced Senior Software Engineer to shape modern digital experiences at scale. You will design and deliver modular, high-performance applications using React, TypeScript and backend-for-frontend patterns in a fast-paced environment. You will mentor ...

company is a global platform for travel and spend management, seeking a Senior Front End Engineer to shape the experiences of its group travel and events product. You will influence the product's end ...

industry, we would love to hear from you! 🚀 The Opportunity: Join our Product Community team as a Frontend Software Engineer and play a key role in shaping cutting‐edge user experiences! You'll work on exciting, high‐impact projects ranging from AI‐powered features … across teams to ensure the frontend experience aligns with backend capabilities. In any case, you have: Strong experience as a software engineer working on production systems. Proven expertise in building scalable UIs with React and TypeScript. A track record of collaborating with backend engineers ...

industry, we would love to hear from you!ð The Opportunity: Join our Product Community team as a Frontend Software Engineer and play a key role in shaping cutting-edge user experiences! You'll work on exciting, high-impact projects ranging from AI-powered … across teams to ensure the frontend experience aligns with backend capabilities. In any case, you have:- Strong experience as a software engineer working on production systems.- Proven expertise in building scalable UIs with React and TypeScript.- A track record of collaborating with backend engineers ...

Group is working with a growing software company to recruit a Senior Front End Engineer to join its product engineering team. … This is a hands‐on engineering role for someone with strong React and TypeScript experience who enjoys building modern, scalable front-end applications. The business is investing heavily in how users interact with its technology, including new approaches where AI can dynamically ...

Road to Unicorn! Join a company at the inception of their ambitious journey! As an innovative AI start-up, they seek a talented and pragmatic individual to play a pivotal role in their team. You ...

Experis - ManpowerGroup is seeking a Senior Frontend Developer to own a modern React and TypeScript platform, shaping its architecture and engineering standards. You will design and deliver high‐impact features, champion accessible UX, and collaborate with Product, Design, and Engineering to raise frontend quality across the stack. Expect ...

leading technology company in Greater London is looking for a Senior Front End Software Engineer to develop sophisticated applications on the Palantir Foundry platform. This role involves architecting and developing user interfaces and tools ...

Jain Global is seeking a Senior UI Platform Engineer in London to accelerate internal web app development by building reusable UI foundations and shared packages. You will own frontend architecture, work with React/TypeScript, and collaborate across engineering to standardize scaffolding ...

leading global financial services firm in London seeks a Senior Lead Software Engineer to join an agile team focused on enhancing and delivering top-notch technology products. The successful candidate will have 5+ years of experience, excel in software engineering concepts ...

Jain Global is seeking a Senior UI Platform Engineer to join in London. You will help build reusable frontend foundations, maintain shared React/TypeScript packages, and shape onboarding and access experiences across teams. The role focuses on platform engineering for internal ...

Powster is seeking a Senior Creative Software Engineer in London to lead immersive WebGL experiences and frontend development across music and movie clients. You will collaborate with creatives and engineers to deliver high-concept websites and AR activations, working onsite in Central ...

Trustonic is seeking a Senior Frontend Developer to own a modern React and TypeScript application. You will shape architecture, deliver accessible, responsive features, and collaborate across design, backend and Product teams. The role is remote with occasional attendance at the Winnersh office. You’ll work on frontend stack ...

thing every customer touches, and the first line of defence for a high growth, cross-border remittance business. We're looking for a Senior Mobile Engineer to help us build the React Native experiences that carry millions of customers through onboarding ...

Rootshell Security is seeking a Senior Full Stack Engineer who specialises in frontend development to join a team of passionate engineers in the UK. You’ll own features end-to-end, balancing UX with ...