Quant jobs / Citadel Securities

Quantitative Researcher – Post-Doctoral Intern (US)

Citadel Securities develops statistical models for automated trading. This researcher tests signals and turns quantitative ideas into implementations used by trading teams.

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.

Investigate financial and alternative datasets.
Backtest candidate models and signals.
Implement and assess trading-model improvements.

What they ask for

Required

Probability and statistics
Independent research
Model implementation
Analytical accuracy
Communication

Education: Postdoctoral-level preparation in a quantitative subject is stated.
Experience: Prior data-led and independent research; minimum years unspecified.
Languages and tools: Python
R
C++

How to prepare

Backtest a signal with chronological validation.
Translate a statistical model into tested code.
Check whether research results survive alternative assumptions.

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 Citadel Securities’s site before applying: requirements, location and pay can change after we check them.

View the posting on Citadel Securities’s site ↗

SelfMadeQuant wrote this summary from the employer’s public posting, last checked 6 November 2026. SelfMadeQuant isn’t affiliated with Citadel Securities and doesn’t handle applications.