Job Title: Associate UI Developer

Location: London (Hybrid, 2–3 days in office)

Team: Front Office E-Trading

Overview

We are hiring an Associate UI Developer to join a front-office e-trading team building high-performance trading platforms used by internal traders and external clients.

This is a hands-on React role focused on developing responsive, real-time trading interfaces where performance, clarity, and reliability matter.

You will work closely with backend engineers, quants, product, and traders to deliver intuitive trading UIs.

Responsibilities

• Build and enhance trading UIs using React.js and TypeScript
• Develop real-time data-driven components (pricing, order entry, blotters, charts)
• Work with WebSockets and streaming data feeds
• Optimise UI performance for high-frequency updates
• Implement reusable components and shared UI libraries
• Collaborate with backend teams integrating REST and messaging APIs
• Contribute to UI architecture decisions and best practice
• Write unit and integration tests
• Participate in code reviews and agile ceremonies

Required Skills

• 2–5 years commercial experience with React.js
• Strong TypeScript and modern JavaScript (ES6+)
• Experience building complex, data-heavy applications
• Understanding of state management (Redux, Zustand, or similar)
• Experience working with REST APIs and real-time data streams
• Solid understanding of performance optimisation in the browser
• Familiar with Git and CI/CD workflows

Desirable

• Experience building e-trading systems
• Knowledge of financial markets (Commodities, FX, Rates, Equities)
• Experience with AG Grid or similar grid libraries
• Exposure to WebSockets.
• Understanding of UX principles in trading environments

What You’ll Work On

• Real-time pricing screens
• Order entry and execution workflows
• Trade monitoring and analytics dashboards
• Risk and PnL visualisation tools

Profile

You are technically strong, detail-oriented, and comfortable working in fast-moving trading environments. You care about performance and usability, and you understand that small UI delays can have real financial impact.

This is an opportunity to build systems directly used on trading floors, where the feedback loop is immediate and the impact is visible.