Citadel

HQ
Miami
Total Offices: 24
4,000 Total Employees
Year Founded: 1990
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Articles about Citadel

Featured Articles

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Olivia McClure Olivia McClure
Published on November 25, 2025

Citadel Engineering Team Career Growth: The Company's Onboarding Program Sets New Engineers Up For Success From the Start

New engineers at the firm can expect to dive headfirst into the financial markets through simulated trading competitions, in-depth technical training and more.

Gordon Gottsegen Gordon Gottsegen
Updated on November 08, 2024

Machine Learning for Smarter Trading: 17 Companies You Should Know

Machine learning is transforming financial trading. We've rounded up 14 companies using it to make better trades and more money.

Fintech
Artificial Intelligence
Machine Learning
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Abel Rodriguez Abel Rodriguez
Updated on September 29, 2026

49 Multinational Companies in India to Know

India’s economy is booming and attracting businesses from all over the world. These are the ones to watch.

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Lucas Dean Lucas Dean
Updated on April 08, 2025

Take Note: 18 Chicago Companies to Watch in Spring

Built In Chicago spotlighted 18 local companies, the cultures that unify employees and the perks and benefits that support team members.

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Olivia Arnold Olivia Arnold
Updated on April 10, 2025

Summer Tech Watch: 30 NYC Companies to Know

As summer is heating up, so too is NYC’s tech scene. Check out 30 companies that reward their employees with standout perks and benefits.

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Brooke Becher Brooke Becher
Updated on September 16, 2026

28 Multinational Companies in Gurgaon to Know

The business parks of Haryana’s ‘Millennium City’ hosts some of the world’s most recognizable brands.

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Margo Steines Margo Steines
Updated on May 04, 2026

12 Finance Companies in Australia to Know

Take a look at the well-known finance companies serving Australian businesses and consumers.

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Jeff Rumage Jeff Rumage
Updated on April 08, 2026

21 Finance Companies in Ireland to Know

Powerhouses from Wall Street and Silicon Valley have found fortune on the Silicon Docks.

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Jeff Rumage Jeff Rumage
Updated on July 01, 2026

23 IT Companies in Ireland to Know

These big names have made an impact across the Emerald Isle.

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Rose Velazquez Rose Velazquez
Updated on September 02, 2026

72 US Companies With UK Offices

These U.S. companies boast a global reach that includes offices in the U.K.

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Anthony Corbo Anthony Corbo
Updated on October 14, 2026

45 Top Companies in Miami You Should Know

Check out some of the top companies in Miami you should know about right now. 

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Recently posted jobs

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Quantitative Research Engineer - PHD Intern (Europe)

8 Hours AgoSaved
In-Office
2 Locations
Information Technology • Software • Financial Services • Big Data Analytics
Develop, test, and deploy software solutions for automated trading systems in partnership with Quantitative Researchers. Implement high-performance, scalable systems using advanced quantitative techniques, distributed computing, ML/NLP, and strong software engineering practices. Collaborate on priorities, deliver custom solutions, and engage with senior team members during an 11-week internship.
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Citadel

Software Engineer - Intern (Europe)

8 Hours AgoSaved
In-Office
London, Greater London, England, GBR
Information Technology • Software • Financial Services • Big Data Analytics
11-week internship building high-performance research platforms and trading tools. Work in small teams on distributed systems, NLP/ML applications, and web frameworks while collaborating with senior engineers.
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Citadel

US Physical Gas Specialist

3 Days AgoSaved
In-Office
2 Locations
Information Technology • Software • Financial Services • Big Data Analytics
The role involves physical gas trading, analysis, and scheduling, requiring keen knowledge of U.S. gas markets and collaboration with internal stakeholders.
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