eFX Software Engineer (Java)
Summary
Builds and optimizes ultra-low-latency Java systems for global FX trading, focusing on sub-40 μs latency, high throughput, and fault tolerance.
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‑40 μs 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
- Experience working on mission‑critical systems powering global trading
- Highly technical culture with genuine ownership and impact
- Flexibility in working hours and hybrid setup