Frontend Developer

Front-End Developer | ~£650/day Outside IR35 | London | 12-Month Contract Industry: Trading Location: London - 4 days in office Job Type: Contract - 12-month initial Our client, a leading commodity trading firm operating across global energy and commodities markets, is seeking an experienced Front-End Developer to join their trading technology team. You will work on developing high-performance, real-time user interfaces that present complex market data in a clear and intuitive way. You'll be responsible for building interactive applications, dashboards and visualisations that are used daily by traders and other front-office users. Key Responsibilities Design, build and maintain sophisticated front-end applications using React.Develop high-performance user interfaces for displaying real-time market data.Build interactive dashboards, charting solutions and data visualisations.Integrate and customise charting libraries, including TradingView where appropriate.Consume and display live market data via WebSockets and APIs.Work closely with traders, quantitative analysts and back-end engineers to deliver new functionality.Optimise front-end applications for performance, scalability and responsiveness.Contribute to UI architecture and continuously improve the user experience. Required Skills & Experience Strong commercial experience with React and modern JavaScript (ES6+).Proven experience building sophisticated front-end applications and user interfaces.Experience developing real-time, data-driven applications.Experience building market data visualisation tools, dashboards or charting applications.Strong understanding of WebSockets, APIs and live data streaming.Solid knowledge of HTML5, CSS3 and modern front-end architecture.Experience optimising front-end performance for data-intensive applications.Experience using Git and modern development workflows. Desirable Experience Experience within commodity trading, financial services, capital markets or fintech.Experience working with high-frequency or low-latency applications.TypeScript experience.