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rmg digital Logo rmg digital · IT - Software Development

Senior Software Engineer, Data Engineering

United Kingdom, London · Job Posted February 03, 2026
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Job Description

Senior Software Engineer (Contract) – Market Data. 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.

Job Responsibility

  • 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

Requirements

  • 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
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