Principal Software Engineer, Infrastructure Security

This position involves leading the technical direction and execution of foundational security services within OpenAI’s infrastructure. Day-to-day responsibilities include owning the architecture and roadmap for core systems such as authentication, policy enforcement, secure proxies, and key management platforms. The role requires designing and implementing large-scale security systems that operate across hardware, operating systems, Kubernetes, networks, and CI/CD pipelines. These systems must balance security, reliability, latency, and developer experience while protecting sensitive data and model weights. The job demands high standards of software craftsmanship and robustness under intense scale and adversarial pressure. Specific technical areas mentioned include GPU supercomputing clusters, multi-cloud infrastructure, datacenters, networking, storage, service meshes, and bare-metal hardware. The advert does not specify particular years of experience, formal qualifications, or language requirements for this role. The working arrangement is remote, allowing the candidate to work from a location of their choice. This position suits a senior engineer who can drive cross-functional launches and set technical direction for critical security backbones. The ideal candidate should be comfortable with both technical building and operational execution to support the company’s research and product efforts.