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 $175000 to $350000.
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 .
Skills Required
- 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.
What the Team is Saying
What We Do
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.
Why Work With Us
We do not accept the status quo and we are constantly looking to achieve what others think is impossible. That’s true not just in our careers but also in our communities.
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Date Posted
07/01/2026
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