Research Software Engineer - Finance (EP-SFT-2025-194-GRAP)

Are you excited about bringing together particle physics and finance? Project HighLO applies data analysis techniques from physics to financial markets, helping regulators and exchanges tackle challenges like fraud detection.

We are looking for a Research Software Engineer to turn our research into production-ready algorithms and tools. ROOT (root.cern) is a C++/Python framework developed at CERN and used worldwide in particle physics, and also in Project HighLO.

You will work as a member of two diverse and creative teams: CERN's ROOT team and the HighLO research collaboration.

Your responsibilities:

• Work with us on a ROOT-based framework for analysing limit order book data.
• Collaborate with financial institutions to adapt our software to their needs and support the deployment process.
• Use your experience in data analysis, helping us to apply statistical data analysis techniques used in particle physics to financial data.
• Build solutions to analyse streamed data with ROOT in real time.
• Work on data structures in ROOT that are used in financial data analysis.

Your profile:

• Experience in building data analysis libraries with C++ and Python.
• Data analysis experience and domain knowledge in particle physics or finance (or both).
• Experience working on large codebase open source projects.

Skills:

Proficiency in:

• Python, C++.
• Git, CMake.

Optional, but considered a plus:

• Knowledge of ROOT.
• Web technologies like React or Next.js to be used for interactive analysis dashboards.
• Spoken and written English, with a commitment to learn French.

Eligibility criteria:

• You are a national of a CERN Member or Associate Member State.
• You have a professional background in Physics, Finance, Computer Science (or a related field) and have either:
  • a Master's degree with 2 to 6 years of post-graduation professional experience;
  • or a PhD with no more than 3 years of post-graduation professional experience.
• You have never had a CERN fellow or graduate contract before.