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# Quantitative Developer / C++ Trading Systems Engineer

- **Company:** Selby Jennings
- **Location:** London, United Kingdom
- **Experience:** Expert
- **Salary:** £93,256
- **Contract:** Permanent contract
- **Skills:** Algorithmic Trading, C++ (Programming Language), Software Quality, Performance Tuning, Systems Integration, Real Time Systems, Concurrency, Linux Development, Information Technology, Data Management, Software Version Control
- **Published:** November 12, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5962723467

## About the Role

* 5+ years' experience building production systems within electronic or systematic trading
 * Excellent C++, ideally within a performance-critical or low-latency environment
 * Strong experience with production trading systems, particularly market data and/or order-entry infrastructure
 * Deep understanding of concurrency, real-time systems and performance optimisation
 * Strong Linux development experience
 * Excellent software engineering fundamentals across testing, version control and code quality
 * Experience across Futures, FX and/or Fixed Income is particularly relevant
 * Degree in Computer Science, Engineering, Physics, Mathematics, Statistics or another quantitative discipline

Particularly Relevant Experience

Candidates coming from low-latency execution, algorithmic trading, systematic trading infrastructure or front-office quantitative development backgrounds will be particularly well aligned.

Experience supporting live trading systems, implementing production controls, and integrating with larger institutional technology platforms would also be highly valuable.

## Description

You'll design, build and enhance the team's core trading technology, with a particular focus on low-latency, real-time C++ systems.

Responsibilities will include:

 * Building latency-sensitive trading systems from market data ingestion through to order execution
 * Productionising performance-critical signal computation
 * Developing infrastructure supporting systematic research, including replay and data management
 * Building and supporting execution workflows across Futures, FX and Fixed Income
 * Working on real-time, concurrent systems used directly in live trading
 * Improving monitoring, controls and operational robustness
 * Supporting deployment and production processes for live strategies
 * Integrating with established execution, risk, portfolio management, data and monitoring platforms