We embrace bold ideas and seize opportunities others don’t, from the way we operate to the strategies we deploy.
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 in 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. Together, we are forging the future of capital markets.


Citadel Securities Offices

OnSite Workspace

Employees work from physical offices.

Typical time on-site: None
Company Office
HQMiami, Florida, USA
Company Office
Singapore
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Austin, Texas, USA
Boston, Massachusetts, USA
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Chicago, Illinois, USA
Company Office
Dublin, Dublin, IRL
Company Office
Gurugram, Haryana, IND
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London, England
Los Angeles, California, USA
Company Office
New York, New York, USA
Company Office
Paris, Île-de-France, FRA
San Francisco, California, USA
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Sydney, New South Wales, AUS
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Tokyo, Tokyo, JPN
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Toronto, Ontario, CAN
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Zürich, Zürich, CHE
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Citadel Securities Teams

Team
The Next-Generation Capital Markets Firm
About our Teams

Articles We're In

Photo: Citadel Securities
Olivia McClure Olivia McClure
Published on September 25, 2025

How Citadel Securities' Early Careers Technology Program Unlocks Growth, Impact and Career Paths

Learn how the program at the market maker allows early-career technologists to jumpstart their professional growth journeys and make an immediate impact.

Olivia McClure Olivia McClure
Updated on December 31, 2025

Engineering the Future: Inside Citadel Securities’ Early Adoption of C++26

Technical Fellow Herb Sutter explains how the newest version of C++ is driving efficiency, reliability and resiliency in global trading.

Citadel
Ellen Glover Ellen Glover
Updated on October 17, 2025

22 Engineering Companies in Singapore to Know

Singapore is a hub for some of the top engineering companies in the world.

Image: Shutterstock

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