Principal Security Engineer, Infrastructure SecurityActive$347K–$490K

The opportunity

Security is at the foundation of OpenAI’s mission to ensure that artificial general intelligence benefits all of humanity.

What you'll do

  • Own end-to-end security outcomes for one or more critical infrastructure: areas, including multi-quarter strategy, roadmap, and delivery.

  • Design and build security controls across diverse layers (e.g., physical: hardware, firmware/BMC, OS, Kubernetes, networks, and CI/CD) to defend against sophisticated adversaries and insider threats.

  • Lead cross-functional programs to deploy security enhancements and control: changes across broad-scale infrastructure, balancing security guarantees with reliability and velocity.

  • Take a generalist approach to building security controls, balancing a mix of: security expertise and broad technical skillsets to adapt to evolving challenges.

  • Lead and/or drive threat modeling and design reviews for major infrastructure: changes, ensuring strong security foundations and operational excellence.

  • Mentor and level up engineers across InfraSec and partner teams, contributing: to a strong security culture through guidance, reviews, and technical leadership.

What they're looking for

  • Deep understanding of security principles, best practices, and common: vulnerabilities, including strong security judgment under ambiguity
  • A proactive mindset, with the ability to identify and address security gaps: or inefficiencies through automation and tooling.
  • Expertise and curiosity about using frontier models and agents to effectively solve security challenges.
  • A track record of leading large, cross-org initiatives from concept to: rollout, including navigating tradeoffs, driving alignment, and delivering measurable risk reduction.