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Seeking a Site Reliability Engineer to support real-time distributed environments, perform capacity planning, and manage application migrations. Candidates should be knowledgeable in UNIX/Linux, networking, SQL, and scripting with Python.

FPGA Engineers at Citadel Securities design and deploy FPGA solutions to enhance trading systems, maximizing efficiency and performance.

The Site Reliability Engineer will provide support and diagnose issues within a real-time, distributed environment, focusing on large-scale application and infrastructure management, with basic required skills in UNIX/Linux, networking, SQL, and scripting languages.

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.

Software Engineers at Citadel develop, maintain, and support high-performance trading platforms, focusing on custom software solutions and system stability.

As a Software Engineer Intern, you'll create tools for trading strategies, develop research platforms, and collaborate in small teams.

Interns will design, implement, and test FPGA solutions for optimized trading system performance. Collaborate with teams to enhance financial technology.

As a Quantitative Trading Intern, you will analyze financial markets, apply statistical techniques to trading, and innovate using advanced trading platforms.

Design, develop, and deploy software solutions for automated trading systems while collaborating with researchers on technology priorities.

Quantitative traders at Citadel Securities use advanced analytics and technology to make risk decisions, trade across markets, and innovate strategies.