eFX Software Engineer

3 weeks ago

City of London, United Kingdom Harnham Full time

eFX Software Engineer (Ultra-Low Latency Java)Hybrid / Remote - LondonUp to £160,000 + Bonus + BenefitsWe’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’re a high-performance Java engineer who loves solving complex technical challenges at scale, this is a standout opportunity.What you’ll work on:Engineering sub-40μs latency eFX systems with high throughput and fault toleranceDesigning real-time pricing, risk and trading componentsEvolving low-latency Java patterns (lock-free, low-GC, CPU/cache optimisation)Working closely with quants, traders, architects and senior engineersInfluencing technical strategy across distributed, performance-critical systemsWhat we’re looking for:Strong experience in low-latency Java within trading, eFX or electronic marketsDeep understanding of networking (TCP/UDP/FIX), Linux tuning, performance profilingBackground in designing high-performance architectures and distributed systemsStrong grasp of FX pricing, risk, and trading workflowsSolid engineering fundamentals: testing, CI/CD, API design, automationWhy join?Work on mission-critical systems powering global tradingHighly technical culture with genuine ownership and impactFlexibility in working hours and hybrid setup

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