Java HFT Developer – Quant‑Driven Market‑Maker

About the role

We are a technology‑focused algorithmic trading firm seeking a Java developer to build and operate our off‑exchange trading platform. You will work on a JVM‑based networking stack, integrate new venues and asset classes, and deliver cross‑asset pricing features.

Key responsibilities

• Maintain and extend the JVM‑based networking platform.
• Integrate new trading venues and support new asset classes.
• Implement cross‑asset pricing functionality.
• Optimize performance of Java/Kotlin code on modern JVMs.
• Collaborate with traders and engineers in a flat, fast‑moving environment.
• Proactively manage multiple projects.

Required profile

• 3+ years of professional Java (or Kotlin) development experience.
• Strong testing mindset with experience in unit/integration testing.
• Highly numerate with strong problem‑solving abilities.
• Ability to work independently and handle several tasks simultaneously.
• Experienced professional (not a fresh graduate).

Required skills

• Java
• Kotlin
• JVM performance optimisation
• Testing frameworks such as JUnit
• React (preferred for UI work)

What we offer

• Competitive salary up to £200k base plus bonus.
• Flexible work‑from‑home arrangements.
• Flat structure where ideas are evaluated on merit.
• Direct impact on P&L with minimal bureaucracy.
• Benefits package including life & health insurance, pension, onsite gym, yoga, climbing wall, pool, table tennis, and regular social events.