Machine Learning Researcher – PhD Intern (Asia)

Citadel Securities·Singapore·Hedge Fund & Quant

Citadel Securities is hiring a Machine Learning Researcher – PhD Intern (Asia) in Singapore. Posted 2026-07-01; applications close 2026-08-30 (in 59 days).

Role details

Overview

Citadel Securities, a leading global market maker, leverages state-of-the-art machine learning and AI algorithms to modernize the quantitative trading industry. We seek extraordinary and highly motivated researchers who are excited about solving challenging problems and iterating in a fast-paced environment.

Internship Program

As an intern, you’ll dive into research through an 11-week program that enables collaboration with senior team members. You’ll also have opportunities to network and socialize with peers throughout the internship. Our signature internship runs from June through August, with some flexibility to other times of the year. You can indicate your timing preference in the application.

Your Objectives

  • Use statistics, machine learning, or AI (e.g., deep learning, NLP) to extract patterns from various datasets through rigorous research.
  • Implement algorithms in high-quality code.
  • Work with large datasets, including unconventional and unstructured 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 statistics, machine learning, AI, or another highly quantitative field.
  • Hands-on programming experience in scripting (e.g., Python) and/or compiled languages (e.g., 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.

Locations & Opportunities

Opportunities are available in Hong Kong and Singapore.

Privacy & Data

We collect and use personal data in accordance with our Privacy Policy. We retain data on prospective candidates and may consider suitability for alternative opportunities at Citadel. For more information, see our Privacy Policy.

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 across 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. We are forging the future of capital markets. For more information, visit citadelsecurities.com.

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This Machine Learning Researcher – PhD Intern (Asia) role at Citadel Securities runs through the firm's own careers portal and expects a CV and cover letter written specifically for the posting, not a portable submission carried across firms. Jorb AI's application agent tailors a CV and cover letter from your background to this posting and tracks the role alongside the rest of your applications.

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