At a Glance
- Tasks: Enhance trading systems by optimising network performance and analysing market microstructure.
- Company: Leading trading firm in London and Zurich with a focus on innovation.
- Benefits: Attractive salary, flexible working options, and opportunities for professional growth.
- Other info: Join a dynamic team passionate about technology and trading excellence.
- Why this job: Shape the future of trading by improving execution quality in competitive environments.
- Qualifications: 5+ years in systems or network engineering with strong Python skills.
The predicted salary is between 66150 - 80850 £ per year.
They are looking for a Trading Systems Engineer specialising in market microstructure, exchange connectivity and network‑level optimisation to drive performance improvements across some of the most competitive trading environments in the world.
Your work will directly shape how strategies interact with global exchanges, impacting latency, fill rates and trading performance. If you enjoy reverse‑engineering exchange behaviour, analysing packet captures at nanosecond resolution, tuning Linux until it screams, or uncovering microstructure patterns that move PnL - you will thrive here.
- Analyse network traffic, exchange protocol behaviour and wire‑level message flows to uncover inefficiencies.
- Reverse‑engineer market‑microstructure features and exchange matching behaviour to improve execution quality.
- Build tooling, automation and performance‑monitoring systems over high‑volume, high‑resolution datasets.
5+ years in low‑level systems engineering, performance engineering, network engineering, or execution‑side trading infrastructure.
Strong knowledge of Python for analysis and tooling, including time‑series analysis.
Solid understanding of TCP/IP, Ethernet, packet capture analysis, protocol debugging.
Experience with Linux performance tuning, kernel‑bypass networking or lock‑free concurrency is highly desirable.
Network Engineer (Senior) in London employer: Selby Jennings
Selby Jennings is an exceptional employer, offering a dynamic work culture that fosters collaboration and innovation in the heart of London. Employees benefit from extensive growth opportunities, competitive compensation, and a supportive environment that encourages professional development, making it an ideal place for those looking to make a meaningful impact in the finance technology sector.
