76 to 100 of 307 Front-End Engineer (Client-Side Engineer) Jobs in the UK

Smaller surface area than the backend, but real - Settings, Command Centre, Ops dashboards, and the Expo mobile mirror all need upkeep as new features ship. Priority 3 hire - permanent full-time, as workload demands. What ...

## Frontend Software Engineer (JavaScript/TypeScript & React)Apply: Cambridge Office, United Kingdom: Full time: Posted Today: JR101413Darktrace is a global leader in AI-driven cybersecurity, helping organizations stay ahead of evolving threats every day.Darktrace was built on a genuinely differentiated idea: that Adaptive AI could … components using modern frameworks (e.g., React, Angular, or Vue)* Ensure applications meet accessibility standards (WCAG) and deliver an inclusive user experience,* Optimize front-end performance for speed, scalability, and responsiveness across devices,* Collaborate with backend teams to integrate APIs and ensure data consistency,* Participate in design ...

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 ...

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 ...

Software Engineer - Python/Front End Location: Bristol - 2 days per week in the office 50,000 - 70,000 The Opportunity We're working with an innovative, technology-led organisation that is building sophisticated software platforms at the intersection of software engineering … data science, analytics and risk. They are looking for a Software Engineer with around 2-3 years' professional experience to join a highly skilled and collaborative engineering team. This is a fantastic opportunity for a developer who is strongest on the backend but enjoys working across ...

Software Engineer - Python/Front End Location: Bristol - 2 days per week in the office £50,000 - £70,000 The Opportunity We're working with an innovative, technology-led organisation that is building sophisticated software platforms at the intersection of software engineering … data science, analytics and risk. They are looking for a Software Engineer with around 2-3 years' professional experience to join a highly skilled and collaborative engineering team. This is a fantastic opportunity for a developer who is strongest on the backend but enjoys working across ...

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 ...

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 ...

A technology company in London is seeking a software developer to enhance their new HX Workbench platform. The ideal candidate will have experience in software development and proficiency in Python, as well as familiarity with ...

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 ...

Cold Call Advantage is seeking a Product Designer to join our London-based team. You will be involved in the full design cycle from discovery to testing, working with BAs, product managers and developers to ...

bet365 is seeking Frontend Developers to join our Gaming Platform team, working across Stoke, Manchester and Sofia offices. You’ll enhance our world-class products using Golang microservices and React, in a modern architecture deployed ...

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 ...

# Frontend Software Engineer (JavaScript/TypeScript & React)DDarktraceCambridgeFull timevia WorkdayPosted 23 Apr 2026Apply on darktrace.com →Darktrace is a global leader in AI for cybersecurity that keeps organizations ahead of the changing threat landscape every day. Founded in 2013, Darktrace provides the essential cybersecurity platform protecting … components using modern frameworks (e.g., React, Angular, or Vue)• Ensure applications meet accessibility standards (WCAG) and deliver an inclusive user experience,• Optimize front-end performance for speed, scalability, and responsiveness across devices,• Collaborate with backend teams to integrate APIs and ensure data consistency,• Participate in design ...

Hastings Direct is looking for a Senior Digital Engineer to work across the software development lifecycle in agile teams. The role includes providing technical leadership, designing and building software systems, and mentoring junior members. Ideal candidates will have strong expertise in JavaScript and ReactJS, with ...

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 ...

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 ...

Synapri are working with an exciting Software business operating within the Investment Management space looking to hire an experiencedSenior Front-End Engineerto join their growing team on a permanent basis. This is a hands-on role for someone who enjoys getting stuck into complex problems, turning … opportunity to solve interesting technical challenges. There’s also significant scope to take on additional responsibility — from helping shape our front-end roadmap and improving processes through to mentoring junior developers and providing technical insight across the wider business. Location: Onsite/Hybrid in central London ...

global technology provider is seeking an experienced Angular Front-End Developer to join their dynamic team in Manchester. The role involves developing and maintaining high-performance web applications, collaborating with back-end engineers, and mentoring junior staff. Candidates should have at least 5 years … front-end development experience, particularly with Angular, and be familiar with AWS-hosted solutions. A great opportunity for those who thrive in a collaborative and innovative work environment. #J-18808-Ljbffr ...

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 ...

End Engineer for a growing software company in Belfast. You’ll build modern, scalable front-end applications using React and TypeScript, with AI-driven UI components contributing to your work. You will collaborate with backend, product … engineers to shape new features while ensuring performance, reliability, and maintainability across the front-end stack. #J-18808-Ljbffr ...