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Principal Security Engineer, Infrastructure Security

OpenAIRemote - US
Remote Full-time

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Experience Level

Senior

Qualifications

Applicants should possess a solid background in security engineering, with a focus on infrastructure security. A Bachelor's Degree in Computer Science or a related field is preferred. Ideal candidates will have significant experience in designing and implementing security frameworks, managing security protocols, and working in cloud environments. Strong analytical skills, proficiency in programming languages (e.g., Python, Go), and a deep understanding of network security principles are essential. Candidates must demonstrate an ability to work collaboratively in a team-oriented environment and communicate complex security concepts effectively.

About the job

About Our Team

At OpenAI, security is integral to our mission of ensuring that artificial general intelligence benefits all of humanity. Our Security team is dedicated to safeguarding OpenAI’s technology, personnel, and products. We take a technical approach to our builds while executing operationally, supporting every product and research initiative at OpenAI. Our core principles include focusing on impactful outcomes, empowering our researchers and developers, preparing for transformative technologies, and cultivating a strong, collaborative security culture.

About the Role

We are looking for a Principal Security Engineer to join our Infrastructure Security (InfraSec) team. InfraSec is responsible for protecting the backbone of OpenAI’s research and production environments, including GPU supercomputing clusters, multi-cloud infrastructure, data centers, networking, storage, and critical services that support our cutting-edge AI models. This role encompasses everything from bare-metal hardware and firmware to Kubernetes clusters, service meshes, and the secure data pathways that handle sensitive model weights and user information.

As a Principal Security Engineer, you will define the technical vision and lead the implementation of essential foundational services, such as authentication systems, egress/ingress proxies, access brokers, and key management solutions, maintaining high standards of reliability, scalability, and software craftsmanship. These systems are crucial for ensuring security in OpenAI’s customer and supercomputing environments, especially under high-demand and adversarial conditions.

Your Responsibilities:

  • Lead the design and strategic roadmap for core security services (e.g., authentication/authorization, policy enforcement, secure proxies, key management), overseeing their journey from conception through deployment and ongoing operation.

  • Design and develop large-scale security systems that ensure robust protections across hardware, operating systems, Kubernetes, networks, and CI/CD, while balancing security, reliability, latency, and developer usability.

  • Collaborate with cross-functional teams in infrastructure and research engineering to orchestrate secure deployments, shaping interfaces, migration strategies, and rollout plans for extensive fleets and critical workflows.

  • Develop and enhance security primitives (identity, attestation, authorization, encryption key lifecycle, access mediation) that serve as foundational blocks for OpenAI’s platform.

  • Utilize cutting-edge models and agents to create automation and detection tools aimed at continuously identifying and mitigating potential threats.

About OpenAI

OpenAI is at the forefront of artificial intelligence research and development, dedicated to ensuring that AI technology is used for the greater good. Our mission is to advance digital intelligence in a way that is safe and beneficial for humanity. We promote a culture of innovation and collaboration, empowering our teams to push the boundaries of technology while adhering to the highest security standards.

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