EFX Software Engineer (Ultra-Low Latency 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'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 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/CD, API design, automation
Why join?
* Work on mission-critical systems powering global trading
* Highly technical culture with genuine ownership and impact
* Flexibility in working hours and hybrid setup