Citadel Securities · Market maker · New York, Miami · Mid-level · $263k · Posted 2026-07-21

Job Description Role Overview: Citadel Securities is seeking an exceptional Cloud Platform Engineer to join our Research Platform Engineering team in Miami or New York. Our team develops and operates the cloud platforms, distributed systems, and infrastructure that power research, simulations, AI workloads, and data-intensive applications across the firm. We build the services and abstractions that allow researchers and engineers to efficiently leverage large-scale compute, storage, and cloud resources. This role is focused on building scalable, reliable infrastructure and platform services that improve the efficiency, usability, and performance of some of the firm's most critical systems. 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 cloud-native platform services and distributed systems supporting research, AI, and data-intensive workloads Build abstractions, APIs, and automation that simplify cloud resource management for researchers and engineers Design and operate large-scale compute, storage, and networking infrastructure across cloud environments Improve observability, performance, resiliency, and operational excellence across critical infrastructure platforms Collaborate closely with researchers and engineers to translate requirements into scalable production systems Contribute to platform architecture, deployment automation, and infrastructure lifecycle management Qualifications: Bachelor's degree in Computer Science or a related field 3+ years of professional experience building and operating large-scale cloud infrastructure, distributed systems, or platform services Strong programming skills in Go, Python, C++, or similar languages, with a demonstrated ability to build production software Experience developing cloud-native systems and infrastructure on platforms such as GCP, AWS, or Azure (GCP experience is a plus) Strong understanding of distributed systems, Linux, networking fundamentals, and large-scale production systems Experience with Kubernetes, container orchestration, infrastructure automation, or modern platform engineering practices 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.