Machine Learning Researcher – PhD Intern (US)

New York

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Job Description

At Citadel, our mission is to be the most successful investment team in the world. Quantitative Researchers play a key role in this mission by developing next-generation models and trading approaches for a range of investment strategies. 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 datasets in the world.
As an intern, you’ll get to challenge the impossible in 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 
  • Use statistics, machine learning (e.g. deep learning, NLP) to extract patterns from various kinds of datasets through innovative and rigorous research  
  • Implement algorithms in high-quality code   
  • Work with large datasets, including unconventional and unstructured data sources   
  • Back-test models and document research findings   
Your Skills & Talents 
  • PhD degree in mathematics, statistics, physics, computer science, or another highly quantitative field  
  • Advanced training and a strong research track record in machine learning, statistics, deep learning, natural language processing, artificial intelligence, or a closely related quantitative field
  • Hands on programming experience in Python or C++
  • A background demonstrating strong problem-solving skills  
  • An ability to communicate advanced concepts in a concise and logical way  
  • Proficiency in creating and using algorithms to meticulously investigate and work through large data or error-checking problems 
Opportunities available in New York.


In accordance with applicable law, the base salary range for this role is $4,300 to $5,800 per week.

About Citadel

Citadel is one of the world’s leading alternative investment managers. We manage capital on behalf of many of the world’s preeminent private, public and nonprofit institutions. We seek the highest and best use of investor capital in order to deliver market leading results and contribute to broader economic growth. For over 30 years, Citadel has cultivated a culture of learning and collaboration among some of the most talented and accomplished investment professionals, researchers and engineers in the world. Our colleagues are empowered to test their ideas and develop commercial solutions that accelerate their growth and drive real impact.

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