Senior Java Developer / Low-Latency Developer Central London - Hybrid - 3 days on site, 2 days remote Inside IR35 12 months Brief Our client is seeking a Low Latency Java Developer with hands-on experience in FIX protocol integration to join their FX Options technology team. You will play a hands-on role in modernising and optimising the trading platform, delivering ultra-low latency solutions for front-office trading and risk management. Key Responsibilities Develop, optimise, and maintain low latency Java-based trading systems Implement and maintain FIX protocol connectivity for FX Options trading Work closely with Quants, Traders, and Risk teams to translate business requirements into high-performance solutions Take ownership of the end-to-end performance of the platform, including debugging, tuning, and optimising for ultra-low latency Ensure adherence to best coding practices and provide technical leadership within the development team Collaborate with cross-functional teams on architecture, design, and deployment of trading solutions Required Skills 5-10 years' experience as a Java Developer in front-office or trading environments Strong Java Core, multi-threading, and concurrent programming experience Proven experience with low latency system design and optimisation Hands-on experience with FIX protocol integration Solid business knowledge of FX Options trading workflows Excellent stakeholder manag...