Kdb+/Q Engineer

Job Description
Role Overview:
As a Kdb+/Q Engineer within our Global Trading Applications team, you will design and build data and analytics platforms that power trading and quantitative research across global markets. Working closely with traders, quantitative researchers, and engineers, you will develop high-performance solutions for real-time and historical market data at significant scale. This role offers the opportunity to work on a large-scale Kdb+/Q environment supporting critical trading, research, and analytics workflows.
Opportunities may be available from time to time in any location in which the business is based for suitable candidates. If you are interested in a career with Citadel, please share your details and we will contact you if there is a vacancy available.
Responsibilities:

• Design and build high-performance Kdb+/Q platforms that support real-time research, streaming analytics, and trading workflows across global markets

• Partner directly with traders, quantitative researchers, and engineers to deliver technology that drives business outcomes

• Develop scalable solutions for large-scale market data, time-series analytics, and distributed computing challenges

• Contribute to the architecture and evolution of our Global Trading Applications platform, which supports trading, data, and analytics workflows across the firm

• Drive engineering excellence through thoughtful design, automation, and operational best practices

Qualifications:

• Strong experience developing production applications using Kdb+/Q at scale
• Experience building market data, analytics, electronic trading, or quantitative research platforms
• Proficiency in one or more programming languages such as Python, Java, or C++
• Strong Linux and distributed systems knowledge
• Ability to collaborate effectively with technical and front-office stakeholders
• Bachelor's degree in Computer Science, Engineering, Mathematics, or a related technical field

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.
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 .