Electronic Trading Developer

Senior Trading Systems Developer

London | Hybrid

Electronic Trading / Low Latency Infrastructure / Crypto Markets

A leading global digital assets and trading technology business is looking to hire a Senior Trading Systems Developer to help build and optimise high-performance trading infrastructure supporting market making, OTC, systematic trading, and electronic execution environments.

This role sits at the intersection of low-latency software engineering and infrastructure optimisation, focused on maximising throughput, minimising latency, and delivering deterministic performance across critical trading workflows.

The Role

• Design and develop low-latency trading systems supporting market data, execution, and order routing
• Build high-performance distributed systems used across trading and liquidity platforms
• Optimise application, operating system, network, and hardware-level performance
• Work across real-time messaging, exchange connectivity, and execution infrastructure
• Partner closely with traders, engineers, and infrastructure teams on performance-critical initiatives
• Troubleshoot production trading issues and drive system reliability improvements
• Contribute to architecture decisions across multiple trading businesses

Requirements

• Strong core Java engineering background
• Deep understanding of concurrency and multithreaded programming
• Experience building low-latency trading or pricing systems
• Strong JVM and garbage collection optimisation experience
• Knowledge of high-performance messaging technologies such as Aeron or 29West
• Strong networking fundamentals including TCP/UDP, multicast, routing, and switching
• Experience with kernel bypass technologies such as DPDK, Solarflare/OpenOnload, or RDMA
• Strong Linux systems knowledge including scheduling, memory management, and performance tuning
• Experience within electronic trading, market making, HFT, systematic trading, FX, or crypto environments

Nice to Have

• eFX or ultra-low latency pricing systems experience
• FIX or SBE protocol knowledge
• Distributed systems and fault-tolerant architecture experience
• Docker, Kubernetes, or AWS exposure
• Crypto or digital assets experience

The Environment

• High-performance engineering culture
• Greenfield and business-critical trading infrastructure projects
• Direct interaction with trading and quantitative teams
• Modern distributed systems environment
• Strong ownership and autonomy
• Fast-paced global trading business operating across digital assets and institutional markets

Contact Ciara Clarke at Harrington Starr for a confidential discussion on this role.