Software Engineer, Infrastructure Security

Job summary

Responsibilities

OpenAI is seeking a Security Software Engineer to join the Infrastructure Security (InfraSec) team.

• Architect and implement production-grade security services (e.g., auth services, access brokers, secure proxies, key-management infrastructure) that provide strong guarantees…
• Partner with infrastructure and research engineers to embed security into high-performance compute clusters, enabling rapid model training and deployment without compromising…
• Develop automation and detection tooling to continuously identify and mitigate risks in large-scale cloud and on-prem environments.
• Drive high-impact initiatives such as line-speed encryption, machine identity, and network isolation, continuously raising the security bar for emerging AI workloads.
• Lead or participate in design reviews and threat models to ensure new systems launch with strong security foundations and operational excellence.

What they're looking for

• Strong software engineering skills in languages such as Python, Go, Rust, or C/C++, with a track record of shipping and operating high-reliability distributed services.
• Experience building or operating critical security infrastructure (e.g., auth services, service-to-service proxies, certificate or key-management systems).
• Deep understanding of security principles, best practices, and common vulnerabilities.
• Expertise in securing large-scale cloud platforms (e.g., Azure, AWS, GCP), including multi-cloud networks and cloud-agnostic system design.
• Familiarity with container and orchestration security (Kubernetes, service meshes) and modern authentication/authorization standards (OIDC, mTLS, SPIFFE/SPIRE).

Tech stack

• Kubernetes
• Python
• Go
• Rust
• C++
• Azure
• AWS
• GCP