Full-time

eFX Software Engineer (Java)

Posted by Harnham • greater london, England, United-Kingdom

📍 greater london, England 🕒 February 25, 2026

About the Role

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‑lat...

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