Senior Java Developer | Low Latency | London

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Senior Java Developer | Low Latency | London This range is provided by SGI. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Our client is a specialist engineering consultancy known for solving some of the most demanding performance challenges across financial markets and technology. Their teams design, build, and optimise high-throughput, low-latency systems used by global institutions where reliability and speed are critical. They are now looking for exceptional Java Engineers with proven experience in building high-performance, low-latency systems. This role involves working on complex, business-critical projects where every microsecond matters. You’ll join a highly technical team known for solving tough engineering challenges and delivering efficient, elegant solutions across banking, trading, and financial technology environments. 📍Location: Primarily Remote, with travel to London City at least twice per week. What You’ll Do
Design, build, and maintain high-performance Java applications used in demanding real-time systems. Develop and enhance testing and benchmarking frameworks to validate system performance. Identify and eliminate bottlenecks through systematic performance analysis. Contribute ideas and innovations to improve architecture and speed. Quantify and document measurable performance improvements.
Requirements
A strong and proven track record developing low-latency, high-throughput systems on JVM. Understanding of JVM internals (GC, threading, concurrency, locking). Commercial experience with high-performance Java systems. Ability to communicate effectively with both technical and non-technical stakeholders. Ability to work confidently across existing and greenfield projects. Maintaining a high level of professionalism and precision. Exposure to trading, banking or fintech environments is highly beneficial, particularly with front office trading. Experience in a software consultancy or client-facing engineering role.
Seniority level Mid-Senior level Employment type Full-time Job function Information Technology Industries Financial Services, Investment Management, and Investment Banking Referrals increase your chances of interviewing at SGI by 2x #J-18808-Ljbffr
Location:
England, United Kingdom
Job Type:
FullTime

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