Selby Jennings
VP, Algorithmic Trading Developer (Java, Low Latency) & Smart Order Router
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Senior Java Developer, Execution Algos and Smart Order Router (Low Latency)
London, hybrid
A fast-growing electronic trading firm is building the next generation of its execution technology in London and wants a senior Java engineer to own the EMS and Smart Order Router (SOR) end to end.
This is a greenfield build. You will design and develop a low-latency, high-throughput SOR and execution algo suite from the ground up, working directly with the trading desk across FX and digital asset markets. Real ownership, not maintaining someone else's legacy stack.
What you will be doing
- Design and build a low-latency, high-throughput EMS and Smart Order Router in Java
- Develop execution algorithms such as VWAP, TWAP, POV, liquidity seeking and crossing
- Build intelligent routing logic based on execution quality, liquidity, latency and cost
- Work with real-time market data, tick data and multicast feeds
- Tune for performance, fill ratio and latency under live trading conditions
- Partner with traders and quants to refine routing logic and build new capabilities
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What we are looking for
- Strong Java, with real low-latency and concurrency experience
- Background in algorithmic or electronic trading (equities, FX or crypto)
- Experience with execution algos, order routing or SOR
- Solid grasp of OMS/EMS architecture, FIX and market gateways
- Comfortable with Linux, networking, memory management and performance profiling
Nice to have
- Low-latency tooling: Aeron, Chronicle Queue, LMAX Disruptor, SBE, 29West, kernel bypass
- Exposure to crypto, digital assets or DeFi
- Cloud experience (AWS, GCP)
What is on offer
- A genuine greenfield mandate with ownership from day one
- A high-growth, well-funded environment with room to move up fast
- Direct exposure to the trading desk and the business
- Competitive base plus strong bonus
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Desired Skills and Experience
Java, Low Latency Java, Smart Order Router, SOR, Execution Algorithms, VWAP, TWAP, POV, Liquidity Seeking, Crossing, Algorithmic Trading, Electronic Trading, eTrading, Order Routing, OMS, EMS, Order Management System, Execution Management System, FIX Protocol, Market Data, Tick Data, Multicast, Low Latency Systems, Concurrency, Multithreading, Aeron, Chronicle Queue, LMAX Disruptor, SBE, 29West, Kernel Bypass, Linux, Performance Optimisation, Memory Management, Trading Systems, Front Office, Capital Markets, FX, Foreign Exchange, Crypto, Digital Assets, DeFi, AWS, GCP
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