Quant jobs / Susquehanna International Group (SIG)

Quantitative Researcher – PhD 2027

A research role for new PhDs and postdocs at a global proprietary trading firm, developing and validating statistical and machine-learning models for trading. It works closely with systematic traders and technologists.

What you’d work on

Our reading of the posting: what a new hire in this role would most likely spend their first months on.

Build and test statistical or machine-learning signals on large proprietary market datasets
Backtest candidate strategies and check how robust they are out of sample
Suggest improvements to live strategies and measure their effect in production
Work with systematic traders and developers to move research into trading code

What they ask for

Required

Probability and statistics
Optimisation and numerical methods
Python research code
Working with large datasets
Problem solving
Clear communication
PhD or postdoc in a quantitative field

Preferred

C++
Scientific or high-performance computing

Education: PhD finishing by summer 2027, or postdoctoral experience, in a highly quantitative discipline
Experience: New PhDs and postdocs; research track record rather than finance experience
Languages and tools: Python
C++

How to prepare

Rebuild a simple signal research pipeline in Python: data cleaning, feature construction, walk-forward backtest, honest out-of-sample report
Revise probability, statistics and optimisation until you can derive results, not just recite them
Practise overfitting checks such as multiple-testing corrections and purged cross-validation
Prepare for market-making and probability puzzles by working through option and betting-odds problems

What to study

The Quantitative Researcher roadmap sets out the stages for this kind of role, with free resources for each.

Open the roadmap

Apply

Read the full posting on Susquehanna International Group (SIG)’s site before applying: requirements, location and pay can change after we check them.

View the posting on Susquehanna International Group (SIG)’s site ↗

SelfMadeQuant wrote this summary from the employer’s public posting, last checked 6 November 2026. SelfMadeQuant isn’t affiliated with Susquehanna International Group (SIG) and doesn’t handle applications.