C++ Software Engineer

Job Description
C++ Software Engineers build high-performance systems that power our investment process and the technology platforms behind it. Our engineers solve technically demanding problems where performance, efficiency, reliability, and scale matter, developing technology spanning trading systems, market data, research infrastructure, analytics, and core engineering platforms. Their work can span low-latency and performance-sensitive applications, distributed systems, developer infrastructure, data processing, and the libraries and platforms used by engineers and investment professionals throughout the firm.

Key Responsibilities:

Design, develop, test, deploy, and maintain high-performance C++ applications, services, libraries, and platforms
Build reliable and scalable systems supporting critical investment, research, and business workflows
Solve complex performance, latency, throughput, concurrency, and systems engineering challenges
Partner directly with other engineers and investment professionals to understand requirements and develop effective technical solutions
Develop green-field systems and improve the architecture and performance of existing platforms
Profile, optimize, and troubleshoot complex production systems
Design technology capable of operating reliably at increasing data and transaction volumes
Contribute to system architecture, shared libraries, developer tooling, and engineering best practices
Own technology throughout its lifecycle, from design and implementation through production

Qualifications:

Minimum of a Bachelor’s degree in Computer Science, Computer Engineering, or a related STEM discipline, or equivalent experience
Expert-level C++ programming skills and experience developing production-quality software
Strong background in computer science fundamentals, data structures, algorithms, operating systems, and software design
Strong understanding of systems concepts such as memory management, concurrency, multithreading, and performance optimization
Experience building high-performance, distributed, or large-scale systems
Proven track record in software design and development
Comfortable developing in Linux and working with modern software development tools and practices, including testing, source control, build systems, and CI/CD
Experience with networking, low-latency systems, market data, or performance-sensitive applications is a plus
Strong entrepreneurial spirit and the ability to adapt to changing requirements and technologies

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.
To be eligible for UK postings, you must have or be able to obtain UK work authorization.
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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.

In accordance with applicable law, the base salary range for this role is $200,000 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.
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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