Senior Core Java Engineer - Low-Latency Trading
BBBH608_1772205155
Posted: 27/02/2026
- £110000 - £125000 per annum + bonus, hybrid, benefits
- City of London, London
- Permanent
Senior Core Java Engineer - Low-Latency Trading 💹
💰 Salary: Up to £125,000 + bonus + benefits
📍 Location: City of London (3 days onsite)
Build ultra-low latency systems at the heart of global FX trading!
This is an opportunity for a Senior Core Java Engineer to join a leading Asian FX trading firm as they continue to scale their London engineering team. You'll play a key role in designing and optimising high-performance trading systems where speed, precision and reliability are critical.
If you enjoy working close to the metal, solving complex performance challenges and operating in a fast-paced financial environment, this is the role for you.
🚀 What you'll be doing
- Design, build and optimise low-latency, high-throughput Core Java trading systems
- Own and drive performance improvements across critical components
- Contribute to the architecture and evolution of a world-class FX trading platform processing billions of messages per day
- Mentor engineers and promote best practices around testing, code quality and performance
- Operate within modern engineering practices including CI/CD, TDD, and Agile
💻 Tech Environment
Core Java (no frameworks), multithreading, concurrency, low-latency optimisation, AWS/GCP, Docker, Kubernetes, CI/CD, TDD, Agile.
✅ What they're looking for
- Strong commercial experience in Core Java development (framework-light / no Spring environments preferred)
- Deep understanding of multithreading and concurrency
- Experience building or optimising low-latency or high-performance systems
- Background working in high-throughput, distributed environments
- Comfortable working in cloud-based infrastructure (AWS or GCP)
- Strong engineering fundamentals and a senior-level mindset (ownership, mentoring, architectural input)
- Interest in financial markets or trading systems (experience in finance is a plus, not essential)
🌍 Why join?
➡️Work on systems where milliseconds matter
➡️High-impact role with real ownership and technical influence
➡️Join a growing London team within a globally established trading firm
➡️Competitive compensation with strong bonus potential
Interested? Apply now or get in touch for a confidential conversation.
Charlotte Young
Head of Java & Kotlin Recruitment