Lead Java Developer | Low-Latency Trading Systems

Harrington Starr; City Of London; On-site; GBP 120,000 - 180,000; Full time

Job summary

Harrington Starr is seeking a Java/Quant Developer for their London Office, focusing on crypto, FX and eFX trading systems. This hands-on role requires strong CS fundamentals and the ability to contribute to high‑performing algorithms in a fast-paced market. You will work on core Java development, market connectivity, low-latency systems and Linux scripting, with a close touch to a trading desk environment. A solid background in multi-threading and TDD/BDD is essential.

Qualifications

• Core Java development and market connectivity experience.
• Experience with multi-threading.
• Experience on low latency trading systems.
• Experience in TDD/BDD.
• Designing trading systems.
• Strong computer science/STEM background.
• Supporting knowledge of Linux & Bash Scripting.

Responsibilities

• Core Java development and market connectivity experience.
• Experience with multi-threading.
• Experience on low latency trading systems.
• Experience in TDD/BDD.
• Designing trading systems.
• Strong computer science/STEM background.
• Supporting knowledge of Linux & Bash Scripting.

Skills

Core Java

Low-latency systems

Multithreading

Trading systems design

TDD/BDD

Linux Bash scripting

Quant/CS background

Job description

Harrington Starr is seeking a Java/Quant Developer for their London Office, focusing on crypto, FX and eFX trading systems. This hands-on role requires strong CS fundamentals and the ability to contribute to high‑performing algorithms in a fast-paced market. You will work on core Java development, market connectivity, low-latency systems and Linux scripting, with a close touch to a trading desk environment. A solid background in multi-threading and TDD/BDD is essential.