Senior React Engineer

We are seeking a highly skilled Senior React Engineer to join a front-office technology team responsible for building next-generation electronic trading and market data applications.

This is an opportunity to work on highly performant, real-time systems used by traders and sales teams globally. You'll be responsible for building responsive, data-intensive user interfaces that process and visualise large volumes of streaming market data while maintaining exceptional user experience and performance.

Responsibilities

As a Senior React Engineer, you will work closely with frontend, backend and business stakeholders to deliver mission-critical trading applications. You'll play a key role in designing frontend architecture, optimising performance, and ensuring applications remain responsive under heavy data loads.

• Design and develop high-performance web applications using React and TypeScript.
• Build and maintain real-time user interfaces consuming large volumes of streaming market data.
• Optimise browser performance, rendering pipelines, memory usage and application responsiveness.
• Work closely with backend engineering teams to integrate low-latency data services.
• Contribute to frontend architecture, technical standards and engineering best practices.
• Develop robust testing strategies and maintain high levels of application quality.
• Participate in system design discussions and performance tuning initiatives.
• Support the evolution of trading and market data platforms used globally.

Requirements

Essential Skills & Experience

• Strong commercial experience developing applications using React and TypeScript.
• Experience delivering production-grade frontend systems in trading, market data, financial services or other high-throughput environments.
• Deep understanding of browser internals, rendering performance, virtualisation, memory management and frontend optimisation techniques.
• Experience consuming and managing real-time data feeds using WebSockets, pub/sub messaging or similar technologies.
• Understanding of concepts such as backpressure, reconnection handling, snapshots and state recovery.
• Strong understanding of software engineering best practices, testing and code quality.
• Experience with Playwright, Cypress, Selenium or similar testing frameworks.
• Ability to understand and troubleshoot backend services, particularly Java-based systems.

Nice to have

• Experience migrating Angular or AngularJS applications to React.
• Knowledge of low-latency messaging platforms such as Solace, Tibco EMS, Kafka or Aeron.
• Familiarity with binary protocols and wire formats including SBE, FlatBuffers or Protobuf.
• Experience with AG Grid or similar enterprise-grade data grid frameworks.
• Exposure to containerised deployment environments and cloud-native architectures.
• Experience building applications for electronic trading, order management, market making, RFQ/RFS workflows or single dealer platforms.

Domain Knowledge

• Foreign Exchange (FX)
• Spot and Forward Trading
• FX Options
• Pricing and Market Making
• Transaction Cost Analysis (TCA)
• Market Data Platforms

We offer

• Opportunity to work on bleeding-edge projects
• Work with a highly motivated and dedicated team
• Competitive salary
• Flexible schedule
• Benefits package - medical insurance, sports
• Corporate social events
• Professional development opportunities
• Well-equipped office

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