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 by developing and testing automated quant trading strategies. We leverage sophisticated statistical techniques and cutting-edge machine learning techniques to solve some of the most complex problems in finance.

As an intern, you'll get to challenge the impossible in research through a summer-long 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.

Your Objectives

• Conceptualize valuation strategies, develop, and continuously improve upon mathematical models.
• Design and build predictive models to generate novel trading signals.
• 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

• Bachelor's or master's degree in mathematics, statistics, physics, computer science, or another highly quantitative field.
• Demonstrated experience in applying advanced machine learning techniques; familiarity with modern AI concepts such as Large Language Models (LLMs) and agentic systems is highly desirable.
• Expertise in translating mathematical models and algorithms into code (Python, R or C++).
• Prior experience working in a data-driven research environment.
• Independent research experience.
• 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 New York and Miami.

In addition to weekly pay, interns may be eligible for a highly competitive sign-on bonus, housing stipend or covered living accommodations, company-sponsored travel, and a variety of on-site benefits, including access to on-site fitness and wellness amenities, catered meals, and social and networking events.

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

About Citadel Securities

Citadel Securities is a technology-driven, next-generation global market maker. We provide institutional and retail investors with world-class liquidity, competitive pricing and seamless front-to-back execution in a broad array of financial products. Our teams of engineers, traders and researchers harness leading-edge quantitative research and the accelerating power of compute, machine learning and AI to power our analytics and tackle the market's and our clients' most critical challenges. Together, we are forging the future of capital markets. For more information, visit citadelsecurities.com .