Full Stack Software Engineer

Job 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.

• 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.
• Experience developing real-time, high-performance applications.
• 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.

• 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 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.

About Citadel Securities

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. For more information, visit citadelsecurities.com.