Quantitative Researcher – PhD Intern (US)

Citadel Securities; Miami (FL); On-site; USD 10,647,000 - 13,723,000; Full time

Job summary

Citadel Securities invites you to join an 11‑week quantitative research internship in Miami or New York. You will work with senior researchers to conceptualize valuation strategies, develop mathematical models, and translate those models into code, primarily using Python, R, or C++.

The program emphasizes collaboration, data-driven exploration, and real-world trading insights. During the internship, you’ll back test trading models in live environments, leverage unconventional data sources, and

Qualifications

• PhD in mathematics, statistics, physics, computer science, or another highly quantitative field.
• Strong knowledge of probability and statistics (e.g., machine learning, time-series analysis, pattern recognition, NLP).
• Prior experience in a data driven research environment.
• Experience translating mathematical models and algorithms into code (Python, R or C++).
• Ability to manage multiple tasks and thrive in a fast-paced team environment.
• Excellent analytical skills, with strong attention to detail.
• Strong written and verbal communication skills.

Responsibilities

• Conceptualize valuation strategies, develop and improve mathematical models, and translate algorithms into code.
• Back test and implement trading models and signals in a live trading environment.
• Use unconventional data sources to drive innovation.
• Conduct research and statistical analysis to build and refine monetization systems for trading signals.

Skills

Probability & statistics

Data-driven research

Multi-tasking

Analytical skills

Written & verbal communication

Education

PhD in quantitative field

Tools

Python

R

C++

Job description

At Citadel Securities, a leading global market maker, our team of quantitative researchers models the markets and brings trading strategies to life every day. Specifically, this team develops and tests automated quant trading strategies using sophisticated statistical techniques. You'll get to challenge the impossible in quantitative research by applying sophisticated and complex statistical techniques to financial markets, some of the most complex data sets in the world.

As an intern, you’ll dive into research through an 11 week program that will allow you to collaborate and connect with senior team members. In addition, you’ll get the opportunity to network and socialize with peers throughout the internship.

Our signature internship program takes place June through August. Occasionally, we can be flexible to other times of the year. You will be able to indicate your timing preference in the application.

Your Objectives

• Conceptualize valuation strategies, develop and continuously improve upon mathematical models, and help translate algorithms into code
• Back test and implement trading models and signals in a live trading environment
• Use unconventional data sources to drive innovation
• Conduct research and statistical analysis to build and refine monetization systems for trading signals

Your Skills & Talents

• PhD degree in mathematics, statistics, physics, computer science, or another highly quantitative field
• Strong knowledge of probability and statistics (e.g., machine learning, time-series analysis, pattern recognition, NLP)
• Prior experience working in a data driven research environment
• Experience with translating mathematical models and algorithms into code (Python, R or C++)
• Ability to manage multiple tasks and thrive in a fast-paced team environment
• Excellent analytical skills, with strong attention to detail
• Strong written and verbal communication skills

Opportunities available in Miami and New York.

In accordance with applicable law, the base salary range for this role is $4,500 to $5,800 per week.