> Markdown version of [/jobs/ext/662760-front-end-react-software-engineer-trading-120-180k-plus-excellent-bonus-london](https://www.wearedevelopers.com/jobs/ext/662760-front-end-react-software-engineer-trading-120-180k-plus-excellent-bonus-london). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Front-End React Software Engineer : Trading : £120-180k plus excellent bonus : London - **Company:** Roleyou'll - **Location:** London, UK - **Contract:** Permanent contract - **Skills:** Clean Code Principles, Java (Programming Language), JavaScript (Programming Language), Application Programming Interfaces (APIs), Algorithmic Trading, C++ (Programming Language), Data Visualization, Linux, Design of User Interfaces, Python (Programming Language), Performance Tuning, Next.js, Data Streaming, TypeScript, Web Applications, ReactJS, Backend, Git, Information Technology, Playwright, Graphql, Front End Software Development, Restful APIs - **Published:** June 27, 2026 - **Apply:** https://www.apply4u.co.uk/jobs/x/40157536/ ## About the Role We're partnering with a high-performance quantitative trading firm to hire a Front-End Engineer (React) to help shape the internal platforms that power their trading, research, and risk decision-making. If you care about architecture, performance, and building interfaces that hold up under pressure, this is firmly in your lane. The RoleYou'll take ownership of complex, data-rich web applications that surface live market data, research insights, and trading activity in real time. These are mission-critical tools used by traders and quantitative researchers operating in fast-moving environments.Expect to think deeply about latency, rendering performance, and information density, not just UI polish. You'll work side-by-side with backend engineers, quants, and traders to design interfaces that remain fast, reliable, and intuitive even when the data is moving quickly and the stakes are high. Key ResponsibilitiesBuild and evolve advanced React applications used in live trading and research workflowsDesign scalable front-end architectures and reusable component systemsOptimise performance for real-time, high-volume data visualisationPartner with backend engineers on APIs, data contracts, and system designDeliver well-tested, maintainable code with a strong bias toward correctness and reliability Core Technical RequirementsStrong commercial experience with React and modern TypeScript/JavaScriptDeep understanding of front-end architecture, state management, and component design patternsExperience working with large, rapidly changing datasets in the browserStrong grasp of performance optimisation (rendering strategies, memoisation, data flow)Comfort working in a Linux-based, Git-driven engineering environmentBSc or MSc in Computer Science or similar Additional Technologies:Next.js or other modern React frameworksWebSockets, streaming data, or real-time UI systemsD3.js, advanced charting, or custom data visualisation workBackend experience with Python, C++, Java, or GoFamiliarity with GraphQL, REST APIs, or event-driven architecturesBonus:Exposure to financial markets, trading systems, or time-series dataExperience collaborating closely with quants or highly technical end usersFamiliarity with front-end testing/tooling (Jest, Playwright, etc.)Interest in UI/UX, balanced with strong engineering discipline ## Related Videos - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [Putting the Graph In GraphQL With The Neo4j GraphQL Library](https://www.wearedevelopers.com/videos/257-putting-the-graph-in-graphql-with-the-neo4j-graphql-library) - [To New Frontiers: The Future of Frontend Development](https://www.wearedevelopers.com/videos/404-to-new-frontiers-the-future-of-frontend-development) - [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews) - [Microservices architecture as a key element in building trading systems for global finance markets](https://www.wearedevelopers.com/videos/1196-microservices-architecture-as-a-key-element-in-building-trading-systems-for-global-finance-markets) ## Related Articles - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [Frontend Developer Salary in The UK](https://www.wearedevelopers.com/magazine/233-frontend-developer-salary-in-the-uk) - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [The Best 7 Frontend Frameworks for Developers in 2025](https://www.wearedevelopers.com/magazine/400-the-best-7-frontend-frameworks-for-developers-in-2025) - [Frontend Developer Salary in Germany [2023]](https://www.wearedevelopers.com/magazine/195-frontend-developer-salary-in-germany-2023)