Search the 63 jobs at Citadel Securities

Design, develop, test, and deploy elegant software solutions for automated trading systems. Partner with the Quantitative Research team to define priorities and deliver custom software solutions.

Senior Research Engineer (Data) responsible for curating large-scale structured and unstructured data, translating high-level queries, developing data pipelines, and setting up analytical infrastructure. Must have experience driving business outcomes through data engineering and strong coding skills in Python and SQL.

Site Reliability Engineer with experience in UNIX/Linux command line, TCP/IP networking, troubleshooting, SQL database queries, Bash, Python, application support, capacity planning, infrastructure upgrades, collaboration, problem-solving, and technology trends.

Our Software Engineers create next-generation software to support business areas across the firm in developing and delivering custom-solutions that optimize performance and efficiency.

Conduct research and statistical analyses on securities, work with large data sets to predict market patterns, develop mathematical models, and implement trading models in live trading environment

As a Senior Network Engineer, you will play a critical role in designing, implementing, and maintaining our complex network infrastructure to ensure low-latency, high-performance trading systems.

Our Software Engineers create next-generation software to support business areas across the firm in developing and delivering custom-solutions that optimize performance and efficiency.

As a Site Reliability Engineer, you will be responsible for supporting and troubleshooting real-time, distributed environments and managing large-scale application and infrastructure deployments. You should have strong knowledge of UNIX/Linux, TCP/IP, and network routing, as well as experience in SQL database queries and scripting languages like Bash and Python.

Research and conduct statistical analyses on securities. Use large data sets to predict and test market patterns. Develop mathematical models and translate algorithms into code. Back test and implement trading models in a live trading environment.

FPGA Engineer at Citadel Securities responsible for creating next-generation FPGA solutions to support ultra-low latency trading systems. Collaborate with business leaders to optimize trading system performance. Opportunities available in New York, Singapore, Sydney, and Hong Kong.

The Client Execution Trading role is responsible for managing trade order lifecycle and workflow to optimize client experience. In this position you will have the opportunity to expand the breadth of your expertise while working with sales traders, quantitative researchers, and development teams across a variety of asset classes.

Campus 2025: Citadel Securities Quant Invitational is a program organized by Citadel Securities, a leading global market maker, to provide institutional and retail investors with liquidity in equity and fixed income products. This program aims to attract bright minds in finance, science, and technology to solve critical market challenges using advanced analytics.

Citadel Securities is seeking candidates for the Campus 2025: Citadel Securities Quant Invitational program. Join us to work on cutting-edge projects in the capital markets field. This is a unique opportunity for aspiring finance professionals to gain hands-on experience and showcase their skills.

Empower quantitative trading by developing in-depth knowledge of financial markets, applying statistical techniques, adapting trading approaches, and innovating using powerful trading platforms.

Challenging graduate program in quantitative trading with opportunities to collaborate with senior team members, innovate trading approaches, and apply advanced statistical techniques. Requires a degree in Applied Math, Engineering, Statistical Modeling, Computer Science, or related fields, with a passion for markets and technology.

Create next generation FPGA solutions to support ultra-low latency trading systems. Partner with business leaders to design and deploy FPGA solutions that optimize trading system performance.

Design, develop, test, and deploy software solutions for automated trading systems, work with Quantitative Researchers to deliver custom software solutions, utilize advanced statistical techniques and technologies.

As a Senior Network Engineer, you will design and implement low-latency network solutions, monitor network performance, troubleshoot issues, enhance network security, collaborate with teams, and plan for network capacity. You should have experience in high-frequency trading or financial services, certification in Cisco technologies, knowledge of network protocols, and proficiency in Python.

Our Software Engineers create next-generation software to support business areas across the firm in developing and delivering custom-solutions that optimize performance and efficiency. Responsibilities include building, maintaining, and supporting a powerful trading platform, designing and deploying software solutions, analyzing complex problems, and providing systems support for trading activities.

Site Reliability Engineer responsible for first line support, problem diagnosis, capacity planning, deployment, and infrastructure upgrades. Must have experience in trading desk support, Python development, and operating system performance tuning. Strong collaboration, communication, and problem-solving skills required.