Senior Java Latency Engineer

Senior Java Developer – Low Latency eTrading / Algo Trading Location: London (2 days per week onsite) Contract: 12 Months Rate: Up to £1,000 per day (Inside IR35) We're looking for an experienced Senior Java Developer to join a high-performing front-office engineering team building mission-critical, low-latency trading systems for a leading financial institution. This is an opportunity to work on sophisticated electronic trading platforms where performance, scalability, and reliability are paramount. Key Responsibilities

• Design and develop high-performance, low-latency Java applications for electronic trading.
• Build and enhance trading algorithms, execution platforms, and market connectivity.
• Optimise application performance through profiling, tuning, and latency reduction.
• Collaborate closely with traders, quants, and product teams to deliver business-critical functionality.
• Contribute to architecture decisions and drive engineering best practices.
• Mentor developers and champion high-quality software engineering. Required Experience
• Extensive commercial experience developing enterprise applications in Java.
• Proven experience building low-latency, high-throughput trading systems.
• Strong background in electronic trading (eTrading) and/or algorithmic trading.
• Excellent understanding of concurrency, multithreading, JVM performance tuning, and distributed systems.
• Experience working in front-office environments within investment banking, hedge funds, or electronic market-making firms.
• Strong knowledge of messaging technologies and market data architectures.
• Excellent communication skills with the ability to work closely with technical and business stakeholders. Desirable Skills
• Experience with FIX protocol and exchange connectivity.
• Knowledge of pricing, execution management, or order management systems.
• Experience with Linux, networking, and performance profiling tools.
• Exposure to cloud technologies and containerisation is advantageous. Contract Details
• 12-month initial contract
• Up to £1,000 per day (Inside IR35)
• Hybrid working – 2 days per week onsite in London
• Immediate interviews available.