Senior Software Engineer

Cititec
London

Job Description

C++ Developer – Low Latency Trading Systems

Location: Hybrid (London)

Duration : 6+ Months

Inside IR35 Contract

We're working with a leading financial services organisation looking to expand their development team working on exchange connectivity and low-latency trading systems. This is an exciting opportunity to work in a collaborative, global team environment delivering high-performance trading infrastructure used across multiple markets.

What You’ll Be Doing:

  • Designing and building market data systems, order management, messaging layers, and other trading services using advanced C++ on Linux.
  • Partnering with quants, traders, and business stakeholders to build and test trading tools and technologies.
  • Participating in DevOps practices, including CI pipelines, code quality tools, and deployment.

What We’re Looking For:

  • 5+ years of experience developing low-latency, high-performance systems in a Linux environment.
  • Strong C++ expertise, using the right tools and constructs to write clean, maintainable code.
  • Knowledge of BSD Sockets, QuickFIX, BOOST, and STL.
  • Bachelor’s degree in Computer Science, Engineering or equivalent experience.
  • Scripting and database query skills.

Nice to Have:

  • Proficiency in Python.
  • Understanding of exchange connectivity protocols (e.g. FIX).
  • Familiarity with market microstructure, Smart Order Routing, and OMS.

Posted 2025-06-14

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