eFX Software Engineer (Ultra-LowLatency Java) Hybrid/Remote - London Up to £160,000 + Bonus + Benefits We’re supporting a major financial services organisation hiring an eFX Software Engineer to build and optimise ultra-low-latency trading systems used across global FX markets. If you … you’ll work on: Engineering sub-40μs latency eFX systems with high throughput and fault tolerance Designing real-time pricing, risk and trading components Evolving low-latency Java patterns (lock-free, low-GC, CPU/cache optimisation) Working closely with quants, traders, architects and senior engineers Influencing technical strategy across distributed, performance … critical systems What we’re looking for: Strong experience in low-latency Java within trading, eFX or electronic markets Deep understanding of networking (TCP/UDP/FIX), Linux tuning, performance profiling Background in designing high-performance architectures and distributed systems Strong grasp of FX pricing, risk, and trading workflows Solid engineering fundamentals: testing, CI/ More ❯
London, South East, England, United Kingdom Hybrid/Remote Options
Harnham - Data & Analytics Recruitment
eFX Software Engineer (Ultra-LowLatency Java) Hybrid/Remote - London Up to £160,000 + Bonus + Benefits We're supporting a major financial services organisation hiring an eFX Software Engineer to build and optimise ultra-low-latency trading systems used across global FX markets. If you … you'll work on: Engineering sub-40μs latency eFX systems with high throughput and fault tolerance Designing real-time pricing, risk and trading components Evolving low-latency Java patterns (lock-free, low-GC, CPU/cache optimisation) Working closely with quants, traders, architects and senior engineers Influencing technical strategy across distributed, performance … critical systems What we're looking for: Strong experience in low-latency Java within trading, eFX or electronic markets Deep understanding of networking (TCP/UDP/FIX), Linux tuning, performance profiling Background in designing high-performance architectures and distributed systems Strong grasp of FX pricing, risk, and trading workflows Solid engineering fundamentals: testing, CI/ More ❯
for leading funds and institutions across Asia, the U.S., and Europe. Our products deliver advanced market-microstructure analytics, backtesting, portfolio and risk tools, and formal verification for low-latency systems merging high-performance computing, AI, and frontier quantitative research. We have been almost doubling revenue every quarter, and need help on this exponential journey. We’re … Decision. Any of the below is a plus but not neccessary: High-performance database systems & transactional correctness (isolation/serializability) Real-time data pipelines & market-data processing (ultra-lowlatency, burst tolerance) Performance/latency optimization to sub-millisecond: CPU cache/NUMA, SIMD, vectorization, I/O tuning Concurrency & memory models More ❯
Developer to join their team. This role—based either in their New York office or fully remote—offers a unique opportunity to design and optimize ultra-low-latency trading systems that drive next-generation strategies. Responsibilities: Build, maintain, and optimize low-latency trading infrastructure. Collaborate closely with quantitative researchers and … implement scalable, high-throughput solutions. Requirements: Expert-level proficiency in C++, with a strong track record of production-quality code. Solid understanding of computer systems, networking, and low-latency programming techniques. Experience with multi-threaded and concurrent programming. Strong problem-solving skills and ability to work in a fast-paced, results-driven environment. More ❯