C++ Engineer in London

C++ Engineer – Market Data

London | Onsite (4 days per week) | Contract

I’m working with a leading quantitative research and trading firm looking to expand their Market Data Engineering team in London.

This team sits at the core of a high-performance trading environment, building and optimising the systems that connect their platform to ~50 global exchanges. The focus is on low-latency data ingestion, exchange connectivity and reliable delivery of real-time market data into trading and research workflows.

The role

• Build and maintain high-performance market data feed handlers in modern C++

• Implement and optimise binary exchange protocols across multiple venues

• Work closely with trading and research teams to ensure timely, accurate data delivery

• Improve latency, throughput and resilience of real-time data systems

• Contribute to exchange connectivity, colocation setups and production stability

What they’re looking for

• Commercial experience in modern C++ (C++11/14/17+)

• Background working on market data feeds, exchange connectivity or trading systems

• Experience with low-latency systems in Linux environments

• Any experience with Python is a plus.

• Understanding of networking concepts and binary protocols

• Exposure to high-throughput, real-time distributed systems

Environment

• High-performance, engineering-led culture with a focus on precision and long-term thinking

• Systems operating at significant scale across global markets

• Close collaboration between engineers, quants and traders

• Opportunity to work on problems where performance and correctness are critical

If this sounds relevant, send your application through for review.