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Quantitative Research Engineer – PhD Intern (US)

Citadel Securities
🇺🇸Miami🇺🇸New YorkMediorIntern$5k–$5kPosted March 24, 2026

About the Role

At Citadel Securities, Quantitative Research Engineers work closely with Quantitative Researchers to develop and implement automated trading system software solutions. These solutions utilize advanced statistical and quantitative techniques to tackle complex financial challenges.

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.

  • Design, develop, test, and deploy elegant software solutions for automated trading systems
  • Partner with the Quantitative Research team to define priorities and deliver custom software solutions
["PhD degree in computer science, mathematics, statistics, physics, or another highly quantitative field", "Strong programming skills with proficiency in one or more programming languages, including C++, Python, and R", "A deep passion for technology, software development, and mathematics", "Strong computer science fundamentals and software development experience", "Experience with some of the following areas: Distributed Computing, Natural Language Processing, Machine Learning, Platform Development, Networking, System Design, and/or Web Development", "Proven track record of creatively solving problems by understanding and prioritizing business value and applying technology solutions", "Strong written and verbal communications skills"]

Responsibilities

  • Design, develop, test, and deploy elegant software solutions for automated trading systems
  • Partner with the Quantitative Research team to define priorities and deliver custom software solutions

Requirements

  • PhD degree in computer science, mathematics, statistics, physics, or another highly quantitative field
  • Strong programming skills with proficiency in one or more programming languages, including C++, Python, and R
  • A deep passion for technology, software development, and mathematics
  • Strong computer science fundamentals and software development experience
  • Experience with some of the following areas: Distributed Computing, Natural Language Processing, Machine Learning, Platform Development, Networking, System Design, and/or Web Development
  • Proven track record of creatively solving problems by understanding and prioritizing business value and applying technology solutions
  • Strong written and verbal communication skills

What You'll Get

  • $5k–$5k base salary
  • Opportunity to network and socialize with peers throughout the internship