Vice President Java Developer (City of London)

Job Title: Core Java Developer – Ultra Low Latency Trading Systems

Location: London

Type: Permanent

Overview:

We are hiring a Core Java developer to join a high-performance trading team focused on eFX OR Crypto markets. This role requires deep technical expertise in ultra-low latency systems and a strong understanding of electronic trading environments.

Key Responsibilities:

• Design and develop low-latency, high-throughput trading components
• Work closely with quant and trading teams to optimise execution performance
• Build and maintain messaging infrastructure using technologies such as Aeron, SBE, Disruptor, Chronicle, and FIX
• Tune the JVM for microsecond-level performance (0GC, CPU affinity, memory management)
• Contribute to architecture and design decisions for latency-sensitive services
• Ensure code quality through rigorous testing, benchmarking, and profiling

Required Skills & Experience:

• Strong Core Java expertise (JVM internals, multithreading, low-level concurrency)
• Demonstrable experience building systems with microsecond SLAs
• Prior experience in eFX or crypto trading platforms , particularly pricing or execution engines
• Familiarity with low-latency messaging libraries (e.g. Aeron, SBE, Disruptor)
• Solid understanding of network-level tuning and OS-level performance optimisation

Desirable:

• Experience with 0GC and off-heap memory management
• Exposure to cloud-based deployment and containerisation (Docker, Kubernetes, CI/CD)
• Background working in high-frequency trading or market-making environments