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Alternative investment firm serving public and private institutions

Founder, CEO, & Co-Chief Investment Officer

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Billionaire Ken Griffin Is Shifting His AI Bets. Here's What He's Buying and Selling.

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Is It Too Late to Buy Eli Lilly? Billionaire Ken Griffin Doesn't Think So. He Nearly Quadrupled His Stake in the Pharma Stock in Q2.

Global Quantitative Strategies | Machine Learning Researcher

Citadel’s Global Quantitative Strategies is its quantitative investment business, where collaborative researchers, engineers, and traders apply advanced quantitative and machine learning techniques to identify investment opportunities. The Machine Learning Researcher develops and deploys models across asset classes, conducting innovative research in areas such as deep learning, sequence modeling, natural language processing, large language models, pre-training, and reinforcement learning.

EMEA Benefits Specialist

Citadel is an alternative investment manager seeking an EMEA Benefits Specialist to oversee the administration, governance, and development of employee benefits programs across the region. The role manages regional benefits operations, compliance, vendors, new market implementations, employee engagement, and complex benefits inquiries.

Software Engineer – Intern

Citadel is one of the world’s leading alternative investment managers, and they are seeking a Software Engineer Intern to work on high-performing and resilient technology. As an intern, you will collaborate with senior team members to create technological tools and develop platforms that enhance trading strategies.

Software Engineer – Intern (US)

Quantitative Research Analyst – Intern

Citadel is one of the world’s leading alternative investment managers, and they are seeking a Quantitative Research Analyst Intern to develop next-generation models and trading approaches. The intern will engage in research, collaborate with senior team members, and contribute to the development of innovative trading strategies.

Quantitative Research Analyst – Intern (US)

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Quantitative Researcher - PhD Graduate

Citadel is an alternative investment manager focused on delivering market-leading results through investment, research, and engineering. The Quantitative Researcher will develop and improve mathematical models and trading approaches, translate algorithms into code, backtest and implement trading signals, and conduct statistical research using financial and unconventional data sources.

Quantitative Researcher – PhD Graduate (US)

Software Engineer - Intern

Citadel is an alternative investment manager that employs engineers, researchers and investment professionals to develop commercial solutions. The Software Engineer Intern will participate in an 11-week program, collaborating with senior team members to build high-performing technology, trading tools and large-scale research platforms for finance.

Software Engineer – Intern (Europe)

Machine Learning Researcher – PhD Graduate

Citadel is one of the world’s leading alternative investment managers, and they are seeking a Machine Learning Researcher to develop next-generation models and trading approaches for investment strategies. The role involves applying sophisticated statistical techniques to financial markets and working with complex datasets.

Machine Learning Researcher – PhD Graduate (US)

Machine Learning Researcher - PhD Intern

Citadel is a leading alternative investment manager that develops quantitative investment strategies and manages capital for institutional investors. The Machine Learning Researcher – PhD Intern will conduct rigorous research using statistical and machine learning techniques, implement algorithms, analyze large and unconventional datasets, and back-test models for financial markets.

Machine Learning Researcher – PhD Intern (US)

Quantitative Researcher – PhD Intern

Citadel is a leading alternative investment manager that manages capital for prominent private, public, and nonprofit institutions. The Quantitative Researcher PhD Intern will develop mathematical models and trading approaches, back test and implement trading signals, use unconventional data sources, and conduct statistical research to improve trading systems.

Quantitative Researcher – PhD Intern (US)

Quantitative Research Engineer – PhD Intern

Citadel is one of the world’s leading alternative investment managers, and they are seeking a Quantitative Research Engineer Intern. The role involves collaborating with Quantitative Researchers to develop automated trading system software solutions using advanced statistical techniques.