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Haystack

Backend Software Engineer

Europe (non-EU)

June 23, 2026 at 8:07 AM

✨ AI summary

Location

  • London, United Kingdom

Languages

  • Rust
We are seeking a highly skilled Backend Software Engineer for a hugely profitable High-Frequency Trading firm that specialises in crypto markets. This is an exceptional opportunity to contribute to cutting-edge low-latency systems within a dynamic financial environment.

The Role

  • Develop and maintain high-performance, low-latency backend systems.
  • Work with Rust to build robust and efficient trading applications.
  • Collaborate with a talented team of engineers to deliver innovative solutions.
  • Contribute to the entire software development lifecycle, from design to deployment.
  • Optimise systems for speed and reliability in a high-frequency trading environment.

What You'll Need

  • Proven experience in backend software engineering, with a focus on low-latency systems.
  • Strong proficiency in Rust programming.
  • Experience within the financial domain, particularly high-frequency trading (HFT), is highly advantageous.
  • Solid understanding of data structures, algorithms, and concurrent programming.
  • Ability to work in a fast-paced and demanding environment.
  • Excellent problem-solving and analytical skills.

What's On Offer

  • Significant bonus opportunities based on individual and company performance.
  • Opportunity to work with cutting-edge technology in the crypto trading space.
  • Collaborative and challenging work environment.
  • Professional growth and development within a leading HFT firm.

Apply via Haystack today!