151 to 175 of 206 Front-End Engineer (Client-Side Engineer) Jobs in London

Adapty is hiring a Senior Frontend Engineer to own the frontend of Flow Builder, shaping its architecture and guiding features from customer problems to production. You will collaborate with the SDK team, ensure fast editor performance, and drive the product forward with minimal gaps between browser ...

Parser is seeking a Senior Frontend Engineer to craft scalable, accessible web apps using React.js and modern frontend practices. You will translate designs into high-quality interfaces, optimize performance, and integrate with backend APIs in a cross-functional team across Europe and beyond. You will work ...

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 web apps, with emphasis ...

Applied Intuition UK is seeking a Senior Fullstack Engineer to join our London team. You will own the design, development, and production rollout of user-facing software across interfaces, APIs, and services. You will work with engineers spanning frontend, backend, and autonomy domains to ensure cohesive ...

Monzo is seeking a Web Engineer to help maintain and scale the public website and build new frontend features. You’ll work closely with product managers, designers and engineers to deliver high-quality, performant user experiences across international audiences. You’ll leverage modern JavaScript, React ...

Imperial College London is seeking a Software Engineer to help shape the UI/UX of Lambda Feedback, a platform supporting thousands of students with automated formative feedback. You will design and improve user interfaces while collaborating with teaching staff and stakeholders across a world-leading ...

Checkout.com in London is seeking a Frontend Software Engineer to design, build and maintain the UI for our payments platform. You will collaborate with Product and Design to deliver scalable frontend experiences across multiple touchpoints. You’ll implement features with React/TypeScript, apply best practices ...

Encord in London is seeking an experienced full-stack engineer to build high-performance frontend experiences and data visualization for the Physical AI stack, from 3D rendering to browser performance. You will own projects end-to-end, collaborate across backend and frontend ...

dynamic creative startup in London seeks a Product Engineer to enhance their web app and SDK, utilizing skills in React, Next.js, Node.js, and TypeScript. The role emphasizes collaboration across teams and encourages innovative problem-solving while offering a hybrid working model with competitive salary and equity ...

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. The ideal candidate ...

CreateFuture in the UK is looking for a Senior Frontend Engineer (Vue.js/TypeScript) to build scalable, accessible frontend solutions for iGaming clients. You’ll influence technical direction, mentor peers, and help embed AI and automation in delivery. This role supports hybrid and remote work across ...

Intermedia, a leading cloud communications company, invites a Senior Frontend Engineer to shape real-time conversations and embedded experiences across our web channels. You will influence frontend architecture and drive scalable patterns from design to production. You will collaborate with Product, UX, ML, and backend teams ...

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-to-end user experience ...

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 that empower thousands of users. The ideal candidate ...

Unitary is a remote-first AI startup building Virtual Agents. As a Senior Software Engineer, you will own the frontend for our products and help shape how customers see and trust AI-powered work, turning early builds into polished surfaces. You will refactor the frontend into ...

hybrid embedded SRE model - We aim to work closely with the teams to provide them the best support. As a Site Reliability Engineer (SRE) you will help ensure our platforms are fast, reliable, and scalable. You’ll design, build, and monitor systems, preventing issues before they ...

hybrid embedded SRE model - We aim to work closely with the teams to provide them the best support. As a Site Reliability Engineer (SRE) you will help ensure our platforms are fast, reliable, and scalable. You'll design, build, and monitor systems, preventing issues before they ...

慨正橡扯 is looking for a Lead Software Engineer (UI) to guide the front-end technical direction for our trading platform, Execute. This vital role will involve partnering with various stakeholders to create high-performance user experiences that are critical to trader operations. … ideal candidate will have extensive hands-on experience with React and TypeScript, alongside a solid understanding of modern front-end engineering practices. Join us and influence our engineering excellence while ensuring compliance with security standards. #J-18808-Ljbffr ...

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/SystemVerilog, develop robust verification environments, drive RTL from ...

Immersum is hiring a Senior Frontend Engineer to design and build a modern React single-page application with ownership from first commit to production. You’ll impact onboarding, accounts and KYC/KYB flows in a fast, autonomous fintech engineering culture. You’ll shape frontend architecture ...

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 (up to 2 days at home ...

Quantum Systems is seeking a talented Front End Engineer with over 5 years of professional experience to join our UK team. You will design, develop, and optimize frontend applications for controlling and visualizing robotic swarms and sensor data. You will collaborate with ...

TransitionZero is seeking a Frontend Engineer to join the interface team and help shape Scenario Builder with React and TypeScript. You will build new capabilities, improve the foundations of the product, and create intuitive experiences over large datasets and complex energy models. You will work with ...

Ripple in the United Kingdom is seeking a Staff Engineer, Frontend to work on Palisade – Ripple’s flagship wallet as a service platform enabling businesses to build digital asset treasury, payment and exchange use-cases. You will bring expert ReactJS and TypeScript skills, craft complex forms ...

Octopus Energy Group is seeking a Senior Frontend Engineer to join the Flexibility team. You will lead frontend capability, set technical direction, and build a range of customer-facing journeys that empower users with low carbon tech management. You will collaborate with design and product ...