Senior Low Latency Java Engineer

2 weeks ago


London, United Kingdom McGregor Boyall Full time

We are hiring an experienced Senior Software Engineer with deep expertise in ultra-low-latency, high-throughput Java systems . This is a role for someone who builds systems that push performance boundaries, not just enterprise-grade services. You'll join a specialist engineering group designing fault-tolerant, sub-40µs latency pipelines, shaping architecture decisions and solving complex technical challenges that require first principles thinking.What You'll Be Working OnDesigning and optimising high-performance Java services with lock-free, zero-allocation and low-GC approaches. Hardware-aware optimisation including CPU architecture, cache behaviour, kernel tuning, core pinning and memory layouts . Building and improving ultra-low-latency messaging pipelines (Multicast, TCP, IPC). Working directly with senior engineering leadership on system architecture and performance strategy. Driving technical direction and mentoring senior members of the team. What We're Looking For10+ years professional engineering experience with core Java in latency-sensitive environments. Strong knowledge of: Ring buffers Off-heap / zero-allocation techniques IPC and high-performance networking Linux kernel optimisation Domain experience in eTrading, market-making, sports betting, high-frequency messaging or telecoms is highly desirable. You thrive in environments where independent problem solving is key. Why This Role MattersThis is not a feature-factory role. You will own problems , drive optimisation decisions, and shape how real-time financial markets infrastructure is engineered. Location: UK basedCompensation: Competitive base salary + performance bonus + pension + benefitsWorking Model: Hybrid flexible McGregor Boyall is an equal opportunity employer and do not discriminate on any grounds.



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