1 to 25 of 30 Remote/Hybrid 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 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 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 ...

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 ...

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. ...

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/ ...

goal: to drive the global green energy revolution. Read our Spotlight series to meet some of the team. We are looking for a Senior Frontend Engineer to join our Flexibility team. The Flexibility team was established in early 2026, and has been … recorded a podcast about our culture and how we empower our people. We’ve also been placed in the top 10 companies for senior leadership Visit our UK perks hub - Octopus Employee Benefits Are you ready for a career with us? We want to ensure you have ...

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 ...

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 ...

Burns Sheehan is collaborating with a rapidly scaling AI-native SaaS business to recruit a Senior Product Engineer (Frontend) in the UK. The role combines hands-on frontend work with architectural responsibilities, and sits in a remote-first, UK-focused setup with ...

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 ...

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 ...

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 ...

Motilent Ltd seeks a Senior Software Engineer for their Platform Frontend Team, responsible for key components in an advanced medical imaging platform. The role requires hands-on development and technical leadership, including mentoring and architectural direction. Candidates should have a strong background ...

full-fledged programs, such as common operating pictures, alert-triaging inboxes, and resource allocation planning tools driven by rich-ML models. As a Senior Front End Software Engineer focused on application development in Foundry ...

full‐fledged programs, such as common operating pictures, alert‐triaging inboxes, and resource allocation planning tools driven by rich‐ML models. As a Senior Front End Software Engineer focused on application development in Foundry ...

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/ ...

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 ...

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 ...

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 ...