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# Full Stack Software Engineer

- **Company:** Citadel LLC
- **Location:** New York, NY, United States
- **Experience:** Experienced
- **Salary:** $175,000.0 - $350,000.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Algorithmic Trading, C++ (Programming Language), Data Visualization, Distributed Systems, Interaction Design, Python (Programming Language), Rapid Prototyping Process, Service-Oriented Architecture, Software Engineering, Software Systems, TypeScript, Workflow Management Systems, ReactJS, Backend, Event Driven Architecture, Information Technology, Build Tools, Front End Software Development, Api Design
- **Published:** November 8, 2026
- **Apply:** https://www.juju.com/job/28_25304_20cb982fbb22e27b9e8bb1772e97cf9c

## About the Role

* 3+ years of professional software engineering experience building complex applications.
 * Strong experience building full stack applications using modern frontend and backend technologies.
 * Proficiency with TypeScript and React
 * Experience designing scalable backend services using languages C++ or Python
 * Experience building distributed systems and service-oriented architectures.
 * Strong understanding of API design, asynchronous systems, and event-driven architectures.
 * Passion for creating intuitive user experiences through thoughtful interaction design and rapid prototyping.
 * Strong analytical and problem-solving skills with the ability to solve open-ended technical challenges.
 * Excellent communication and collaboration skills.
 * Bachelor's or Master's degree in Computer Science or equivalent practical experience., * Experience working with trading systems, financial markets, or capital markets technology.
 * Knowledge of options, derivatives, OTC products, or market structure.
 * Experience building visualization tools for complex datasets.

## Description

* Help define and build the next generation of high-touch pricing and trading workflow tools for Options traders.
 * Partner directly with traders, quantitative researchers, sales teams, and business leaders to design workflows that improve pricing, execution, and risk management.
 * Build full stack applications spanning modern web frontends, backend services, APIs, and distributed systems.
 * Develop intuitive, high-performance user interfaces that enable traders to research, monitor, price, and execute trades in real time.
 * Design scalable backend services that support pricing, workflow orchestration, market data, and trading operations.
 * Build systems to support markets and option instruments Citadel Securities has never traded before.
 * Gain exposure to multiple global markets while helping expand Citadel Securities' Options platform internationally.
 * Prototype new ideas quickly while evolving them into robust production systems.
 * Analyze complex business and technical problems and deliver elegant software solutions across the firm.
 * Continuously improve performance, scalability, stability, and usability of mission-critical trading applications.
 * Collaborate across engineering, quantitative research, and trading teams to translate complex financial concepts into intuitive software., * Define the next generation of high-touch pricing technology used by Options traders globally.
 * Work on a greenfield global OTC Options initiative with significant visibility across the business.
 * Build technology supporting Institutional Derivatives, PSG, and Structured Products trading desks.
 * Help launch entirely new products, markets, and trading capabilities.
 * Collaborate daily with world-class engineers, traders, and quantitative researchers.
 * Own projects that have immediate impact on global trading operations.

In accordance with applicable law, the base salary range for this role is $175,000 to $350,000.

In addition, the employee who fills this role will be eligible to participate in a discretionary incentive compensation program, as well as a wide array of benefit programs, such as medical and life insurance, retirement and tax-free savings plans, and access to other healthcare programs.
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