Citadel X – Production Engineer

New York

Job Description

Team Overview:

CitadelX is a group of elite engineers who partner with different areas across the firm to address their most pressing challenges. Scalable infrastructure, massive data sets, low-latency computing—the solutions and systems we build are essential to generating revenue and keeping Citadel at the front of the financial pack. 

Role Overview:

At Citadel, Production Engineers play a vital role in building, operating, and evolving the high-performance systems that power our investment strategies worldwide. We design and maintain resilient, scalable, and latency-sensitive infrastructure that enables our researchers and investment professionals to pursue ideas at speed and scale.

Production Engineers at Citadel have deep technical expertise – they continuously refine and optimize systems, automate wherever possible, and apply creativity to develop robust solutions to evolving challenges.

We believe in empowering engineering teams to own the performance and reliability of their systems in production. In this role, you’ll collaborate closely with developers and engineers, shaping system design with scalability and resiliency in mind. You’ll share responsibility for diagnosing, resolving, and preventing issues in production—ensuring that Citadel’s infrastructure remains a competitive advantage in global markets.

Primary Responsibilities:

We are looking to add to our current production engineering team in London and NY.  In this role you will have the opportunity to:  

Build, operate, and maintain critical production infrastructure that supports trading and research systems.
Partner with engineering teams to design systems that are scalable, resilient, and observable from the ground up.
Troubleshoot complex issues across the technology stack—application, systems, networks, and storage—under time-sensitive conditions.
Develop automation to reduce manual effort, improve reliability, and accelerate incident response and recovery.
Continuously monitor performance, reliability, and capacity, proactively identifying opportunities for improvement.
Establish best practices for deployment, change management, incident management, and operational excellence.

In accordance with applicable law, the base salary range for this role is $150,000 to $300,000.

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.

Required Skills

Qualifications:

Experience with Linux systems, shell scripting
Experience with Kubernetes, cloud-based infrastructure, distributed systems, and large-scale infrastructure management
Experience with Java (JVM, Heap management)
Experience with databases such as Postgres
Proficiency in at least one programming language (e.g., Python, Java) and strong scripting skills. Familiarity with Q/KDB a plus
Experience with monitoring, logging, and automation frameworks.
Ability to analyze complex systems, identify failure modes, and design solutions that improve resiliency.
Strong problem-solving skills, with the ability to perform under pressure in mission-critical environments.
Excellent communication and collaboration skills, with the ability to influence and partner effectively across teams.
Prior experience in low-latency, high-performance, or financial technology environments is a plus.
Experience with Front-End technologies (React, Javascript) – a plus!

Education:

Bachelor’s degree

About Citadel

Citadel is one of the world’s leading alternative investment managers. We manage capital on behalf of many of the world’s preeminent private, public and nonprofit institutions. We seek the highest and best use of investor capital in order to deliver market leading results and contribute to broader economic growth. For over 30 years, Citadel has cultivated a culture of learning and collaboration among some of the most talented and accomplished investment professionals, researchers and engineers in the world. Our colleagues are empowered to test their ideas and develop commercial solutions that accelerate their growth and drive real impact.

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