51 to 75 of 183 Front-End Engineer (Client-Side Engineer) Jobs in London

About Us About the Role We are looking for a Frontend Engineer to join our interface team and help shape the future of Scenario Builder. This is an opportunity to work on a modern, greenfield frontend codebase built from the ground up using React, TypeScript … interactive visualisations. Understanding of frontend performance principles, including profiling, reducing unnecessary renders, and working efficiently with large datasets. Experience working with client-side data management patterns, including caching, synchronisation, invalidation, and optimistic updates (for example, TanStack Query or similar). Experience writing and maintaining frontend tests ...

Citigroup Inc. seeks a Senior Front-End Developer to join a critical greenfield program modernizing our electronic FX Options Trading platform. You will design and implement real-time pricing UIs using React and TypeScript, collaborating with quants and traders on a multi-year project. You will ...

operations users. The Role As part of our global team you will work front to back as a Lead Engineer, primarily focusing on UI products. As a project lead, you will drive the design and implementation of critical components in the Digital Engineering stack ...

data centers and other energy-intensive industries. Responsibilities Build and maintain responsive, performant web applications using React, TypeScript, Next.js, and modern front-end practices Collaborate with backend engineers to implement APIs and ensure smooth data integration Work closely with product and design teams to deliver intuitive ...

Citi seeks a Senior Front-End Developer to join a greenfield FX Options trading platform. You will drive real-time pricing UIs, RFQ workflows and complex market data tools while collaborating with quants and traders on a global team. Expertise in React and TypeScript is required ...

Solirius Reply, part of the Reply Group, is a technology consultancy delivering strategy, design, engineering and delivery. We hire Automation Test Engineers to work with clients from public and private sectors, designing and delivering test ...

Lovable is seeking exceptional experienced Design Engineers who combine strong frontend fundamentals with a sharp eye for craft and interaction design. You’ll work closely with design and engineering to build world-class interfaces for ...

Bordeaux, based in Greater London, is seeking a Product Designer to lead the design cycle from discovery to user acceptance testing. Ideally, you have at least 3 years of experience in product design and familiarity ...

Too Good To Go is building a brand-new engineering hub in London, and we’re looking for foundational Frontend Software Engineers to help us kick it off. You’ll join a completely new team ...

Encord is seeking exceptional frontend engineers to build out our editor interfaces for multi-modal data visualization and annotation. You will work on rendering complex 3D/4D scenes in the browser, tackle challenges across ...

Senior Frontend Engineer Department: Technology Employment Type: Permanent - Full Time Location: London Reporting To: Matt Millross Description Overview of the role This role sits in the Accounts tribe, which owns the onboarding of clients and their accounts, including KYC/KYB across corporate, fund, intermediaries ...

tech team with the very best engineers to supercharge our growth. We are looking for an experienced, driven, Senior Frontend Engineer who is excited about solving complex problems and building scalable platforms. The role As a Senior Frontend Engineer at the company ...

state, props, context, hooks), and modern architectural patterns. Experience with state management solutions (e.g., Redux/RTK Query, React Context API) and client-side routing. Experience with common frontend tooling, testing, and CI frameworks (e.g., Vite/Webpack, NPM, ESLint, Jest, Playwright). Proven success ...

Engineer (Front-end) Location: London/Remote Duration: 12 months * UK National with minimum 5 years unbroken residency Umbrella only Looking to build AI-powered digital experiences that genuinely help people? Our Client is hiring an AI Engineer … product-clear, usable, and dependable * Working across teams to deliver and refine AI-enabled customer-facing experiences What you'll bring: * Strong front-end engineering experience and a passion for user experience * Capability to develop AI-enabled user interfaces (front-end focus ...

Senior Front End Engineer (React/TypeScript) London Hybrid (2-3 days per week) Build the platform that powers client onboarding at scale We're looking for a Senior Front End Engineer ...

Engineer (Front-end) Location: London/Remote Duration: 12 months Umbrella only UK National with minimum 5 years unbroken residency What you'll be doing: Developing AI-enabled user interfaces and digital experiences Building and improving front end … product-clear, usable, and dependable Working across teams to deliver and refine AI-enabled customer-facing experiences What you'll bring: Strong front-end engineering experience and a passion for user experience Capability to develop AI-enabled user interfaces (front-end focus ...

consulting firm is seeking a front-end developer for their Issuemaster real-time web application in Greater London. The ideal candidate will have at least 4 years of experience with Angular, 3 years with Typescript, and expertise in real-time web application development. Responsibilities include developing ...

Evantic Capital, alongside the founders and operators of Stripe, Datadog, Miro, and Webflow. About the role As a Senior Frontend Engineer on our Website team, you'll be a co-owner of the platform behind synthesia.io: the component library, content model and rendering stack that every … adoption with the people who publish on it. What we're looking for At least five (5) years as a software engineer, including three (3) at senior level, building front end for content-driven or marketing platforms. Real ownership of a content ...

Senior Product Engineer (Frontend) - AI-Native SaaS Platform | Tripled ARR in 12 months Remote-first (UK) with hybrid London office option Up to £130,000 + equity Typescript/Node, React, GCP/AWS Senior Product Engineer - We're working with … over $12m ARR, they're now expanding their Engineering team to match the ambition of their product and customers. The Senior Product Engineer As a Senior Product Engineer , you'll be at the heart of designing, building, and scaling the frontend ...

industry, delivering the performant, reliable, and scalable foundation trusted by the world’s largest engineering companies. About the role: The Staff Frontend Engineer will own and evolve the Physical AI platform’s product surface: the data‐heavy, workflow‐centric web experience where engineers design experiments, compare ...

industry, delivering the performant, reliable, and scalable foundation trusted by the world’s largest engineering companies. About The Role The Staff Frontend Engineer will own and evolve the Physical AI platform’s product surface: the data-heavy, workflow-centric web experience where engineers design experiments, compare ...

minds in the 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 … working 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 features … working 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 ...

from customer-facing interfaces to internal admin systems that manage complex AI workloads. They are looking to hire a Senior Full-Stack Engineer with strong frontend expertise to take a leading role in shaping the user experience across all their web products. This is not just ...

Backend teams, we create fast, scalable and accessible experiences that have a real impact on millions of customers. As a Frontend Engineer, you'll play a key role in building and evolving modern web applications using our frontend ecosystem. You'll work alongside experienced engineers ...