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