Frontend Developer at Cititec, London Area, £650 per day

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.