Quant jobs / Citadel Securities

Quantitative Trader – Intern (US) (Trading and Research)

This summer application covers trading and research at Citadel Securities. Interns rotate between two teams, complete supervised projects and study how statistical models inform trading.

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.

Research and implement a defined desk project.
Evaluate signals and valuation models.
Practise trading decisions through simulation and feedback.

What they ask for

Required

Quantitative reasoning
Statistical analysis
Model-to-code skills
Analytical accuracy
Communication

Preferred

LLM or agentic-system experience

Education: A bachelor’s qualification in a quantitative discipline is stated as required.
Experience: Internship; no prior-work minimum specified.
Languages and tools: Python
R
C++
Markets: options, equities, fixed-income, commodities, fx

How to prepare

Code and validate a simple trading signal.
Practise probability and game-theory problems.
Present a concise research result with limitations.

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.