Lead Software Engineer (C#/React.js) - Top Trading Firm!

• Strong C#/.NET engineering background
• Solid React.js (or modern JS with willingness to grow fast)
• Experience in financial services/trading systems
• Ownership mindset - hands-on, ideas-driven, and proactive

Robert Half Ltd is representing this role. One of the strongest engineering roles in London right now. Are you looking for influence and autonomy? Join a leading trading firm that is rebuilding its entire core platform from the ground up greenfield, modern, high-impact. You'll be working directly with the CTO on mission-critical systems used across trading and structured products. What You'll Work On: * Full greenfield rebuild of Legacy trading systems * Modern full-stack engineering: C#/.NET + React.js * High-performance, multithreaded architectures * Close collaboration with product, trading, and a 15+ engineering team, Robert Half Ltd acts as an employment business for temporary positions and an employment agency for permanent positions. Robert Half is committed to diversity, equity and inclusion. Suitable candidates with equivalent qualifications and more or less experience can apply. Rates of pay and salary ranges are dependent upon your experience, qualifications and training. If you wish to apply, please read our Privacy Notice describing how we may process, disclose and store your personal data: roberthalf.com/gb/en/privacy-notice.