Senior Software Engineer, Data Engineering

• Design, build and optimise components of a high-throughput market data platform
• Work across Java (primary) and Python in a performance-critical environment
• Improve and modernise older parts of the stack with a focus on scalability and latency
• Partner closely with Data Management teams and Quant Traders within the systematic trading business
• Contribute to the ongoing expansion of a specialist market data engineering function

Do you have experience in Python?, * Strong commercial experience in Java (essential)

• Solid Python development experience
• Background in market data, trading systems, or low-latency / high-performance platforms (highly desirable)
• Experience working with large-scale, real-time data systems
• Comfortable operating in fast-paced, high-stakes environments, * 1-hour technical / programming interview with a team member
• Possible final 30-minute follow-up (at least 1 interviews conducted in person)

Inside IR35 | £500-575 per day (flexible) | Hybrid - London A leading global investment management firm is seeking Senior Software Engineers (Contract) to join its Market Data Platform team on a high-impact engagement. This is a critical hire, with the opportunity to step into a highly visible area of the business where performance, scale and reliability truly matter. This team sits at the heart of a systematic trading environment, responsible for ingesting and processing vast volumes of real-time market data through direct exchange connectivity. The platform operates at extreme scale - handling 15-20 billion data points per day, with peak rates of over 1 million events per second - and accuracy is non-negotiable. Two contract roles are available, making this an excellent opportunity for experienced contractors who can hit the ground running.