1 to 25 of 78 Permanent Senior Front-End Engineer (Client-Side Engineer) Jobs in London

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 … last year to 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 ...

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 to help shape and build a modern onboarding and account management platform used by businesses across multiple customer types, including corporates, funds, intermediaries and complex account structures. You'll join a highly autonomous engineering ...

Senior Frontend Engineer (React.js) Who is Parser? Technology alone does not create impact- the right teams do. Founded in 2018, Parser is a boutique technology services and consulting firm helping global organisations solve complex business challenges through digital transformation, product development … Spain, Portugal), the Americas (US, Argentina, Uruguay, Colombia), and the Middle East. We combine global reach with a mindset focused on agility, senior expertise, and close collaboration. We work as an extension of our clients' teams, helping them define the right problems, shape solutions, and deliver technology-driven ...

Senior Frontend Engineer Department: Dev & Engineering Employment Type: Full Time Location: United Kingdom Description About Intermedia Are you looking for a company where YOUR VOICE is heard? Where can you MAKE A DIFFERENCE? Do you THRIVE in a FAST-PACED work environment … your mark? In this role, you will solve challenging frontend engineering problems involving real-time conversations, dynamic interactions and embedded experiences. As a senior technical contributor, you will influence frontend architecture and technical direction, lead complex initiatives from design through production, and help establish engineering standards and patterns ...

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 to help shape and build a modern onboarding and account management platform used by businesses across multiple customer types, including corporates, funds, intermediaries and complex account structures click apply for full job details ...

middleman, lower costs and pass the savings on to our customers. We're hiring a Senior Front-End Engineer to build the consumer and internal products that power a next-generation energy company. ResponsibilitiesBuild … maintain responsive, performant web applications using React, TypeScript, Next.js, and modern front-end practicesCollaborate with backend engineers to implement APIs and ensure smooth data integrationWork closely with product and design teams to deliver intuitive, user-friendly experiencesParticipate in prototyping and experimentation ...

Senior Software Engineer – Platform Frontend Team As a Senior Software Engineer, you’ll take ownership of key components in Motilent’s advanced medical imaging platform, ensuring our viewer technology remains robust, performant, and scalable. … degree (or equivalent) in Computer Science, Engineering, or a related technical discipline, and 3+ years of experience as a software engineer within a commercial environment. Production experience with React 18 and TypeScript, including strongly typed hooks, component composition, and modular architecture. WebGL or Canvas ...

Synapri in London is seeking a Senior Front-End Engineer to join our software business in the investment management space. This hands-on role involves turning ideas into digital experiences and delivering projects ...

Clear Street in London is seeking a Senior Front-End Software Engineer to help build our flagship Clear Street Studio, a modern prime brokerage experience. You will tackle non-trivial problems that force ...

plan to scale up our 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, you will: Understand complex business problems then propose and implement technical solution Have a leading input into the frontend architecture, working closely with the Head of Technology and other frontend engineers Work with designers, other engineers ...

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 ...

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 ...

Interactive Brokers Group, Inc. in London seeks a Front-End Engineer to deliver hands-on solutions across our critical trading UI projects, with a focus on Vue-based interfaces and performance. The role supports a hybrid ...

Kleiner Perkins, GV, and 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 … 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 model in Sanity. ...

market. Location: London Office/Hybrid (3 days a week working from home) Reporting to: Engineering Manager The role As a Senior Software Engineer I, you will own the delivery ofhigh-quality software and products, able to be deployedfrequentlyand safely into production. ...

transforming how they can interact with markets tomorrow. For more information, visit https://the company.io. The Role As a Senior Software Engineer on Clear Street's Payments team, you'll play a key role in scaling and modernising our rapidly … customers a smooth payment experience, helping to shape the future of the Clear Street financial ecosystem. What You'll Do Engineer highly reliable, API-driven payment systems that streamline operations and support our global expansion. Translate product and design requirements into clean, maintainable ...

Senior Frontend Engineer (React/React Native) Office: London About the company Emma is the app to manage all things money. Our mission is to empower millions of people to live a better and more fulfilling financial life. Emma was founded … mobile apps Bonus: You previously work for a fintech app Our process: Take-home assessment Screening with internal recruiter Technical call with Senior member of the team Recruiter sync Onsite interview with CTO & CEO Our Benefits: Vitality Membership Health care Dental care Reduced gym memberships Cashback benefits & discounts ...

JPMorganChase in London is seeking a Software Engineer III to join the Enterprise Observability Platforms team. You will design and deliver scalable, secure software solutions as part of an agile team, shaping critical technology used across the firm. You will work with React/ ...

LexisNexis Risk Solutions is seeking a Senior Software Engineer I (JavaScript) to join a cross‐functional team in London. You will build modern web applications using React and Node.js, shaping AI-assisted development workflows to speed delivery while maintaining quality and performance. ...

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 ...

Clear Street is seeking a Senior Software Engineer for its Payments team to scale and modernise our global payments infrastructure, building reliable API-driven systems that integrate with banks and gateways and support expansion into new lines of business. You will collaborate ...

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 … 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/ ...

Attest is seeking a Senior Software Engineer to join the Measure squad and help evolve our quantitative survey platform. You will work across frontend and backend, building scalable features and shaping direction while mentoring teammates. The role emphasizes AI-native development, real ...

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 ...

Gamingtec in London is seeking a Senior Frontend Developer (React & React Native) to lead frontend engineering across web and mobile platforms. You will own UI quality, collaborate with product and back-end … teams, and ship robust SPA/PWA experiences with modern tooling. You should have 7+ years as a Front-End Engineer, mastery of React 18+ with TS, Redux/MobX/Zustand, REST/GraphQL ...