Citadel Securities

HQ
Miami
Total Offices: 14
1,900 Total Employees
Year Founded: 2002

Articles about Citadel Securities

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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 April 29, 2026

23 Engineering Companies in Singapore to Know

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

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Cathleen Draper Cathleen Draper
Updated on April 10, 2025

32 NYC Companies to Watch This Spring

What makes these NYC tech companies stand out from the crowd? Built In NYC highlights the perks and culture of 32 flourishing companies this spring.

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Cathleen Draper Cathleen Draper
Updated on April 08, 2025

Take Note: 21 Chicago Companies to Watch This Fall

From fast-growing startups to established firms with hefty benefits, here’s a rundown of Chicago’s most noteworthy people-first organizations to keep an eye on.

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Brigid Hogan Brigid Hogan
Updated on April 23, 2024

Summer Tech Watch: 26 National Enterprises to Know

As summer is heating up, so too is the nation’s tech scene. Check out 26 enterprises that reward their employees with standout perks and benefits.

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Ellen Glover Ellen Glover
Updated on June 03, 2026

21 IT Companies in Singapore to Know

These top IT companies have offices in Singapore.

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2 Hours AgoSaved
In-Office
New York, NY, USA
Information Technology • Software • Financial Services • Quantitative Trading
Build full-stack, low-latency trading and pricing tools for options traders. Collaborate with traders, researchers, and business stakeholders to design intuitive frontends and scalable backend services, prototype and productionize distributed systems, and expand trading capabilities globally while improving performance, stability, and usability.
2 Hours AgoSaved
In-Office
New York, NY, USA
Information Technology • Software • Financial Services • Quantitative Trading
Design, implement, and maintain low-latency, high-performance network infrastructure for trading systems. Partner with engineering teams to automate, monitor, and troubleshoot distributed networks, optimize performance, ensure resilience and security, and evaluate emerging technologies to improve scalability and reliability.
3 Hours AgoSaved
In-Office
2 Locations
Information Technology • Software • Financial Services • Quantitative Trading
Design, build, and operate cloud-native platform services and distributed systems to support research, AI, and data-intensive workloads. Create abstractions, APIs, and automation for cloud resource management; manage large-scale compute, storage, and networking; improve observability, performance, and resiliency; collaborate with researchers to deliver scalable production systems.