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.