Software Engineer, Codex Cyber

OpenAI; San Francisco (CA); On-site; USD 140,000 - 180,000; Full time

Job summary

OpenAI's Codex Security team is looking for software engineers who can own ambiguous product and platform problems end to end. We seek strong full-stack or generalist builders with a curiosity for security and a knack for turning complex research, product, and customer needs into reliable, scalable systems.

You will work across user-facing surfaces, developer workflows, backend services, security analysis pipelines, cloud infrastructure, and internal tooling, collaborating closely with

Job description

Overview

Codex is OpenAI's software engineering agent. Codex Security extends that work into AI security: helping organizations find, validate, prioritize, and fix real vulnerabilities in the software they build and depend on. The Codex Cyber team builds product and platform foundations for AI-native application security, including security product experiences, cloud-based analysis, platform controls, deployment tooling, and infrastructure for researchers and models. The team is early, small, and growing quickly with a mandate to move fast and hire exceptional builders.

About the Role

We are looking for software engineers first: strong full-stack or product-minded generalists who can own ambiguous product and platform problems end to end. Security experience is helpful, and security curiosity is important, but this is not a role for security specialists who only occasionally write code. The right person is an excellent builder who is excited to work in security and can turn complex research, product, and customer needs into reliable systems.

You will work across user-facing product surfaces, developer workflows, backend services, security analysis pipelines, cloud infrastructure, and internal tooling. You may build features that make Codex Security more useful for application security teams, systems that scale cloud-based security analysis, platform controls that make agentic coding safer, or infrastructure that helps security researchers and models become more effective. You will collaborate closely with engineering, product, security research, infrastructure, and customer-facing partners as Codex Cyber becomes a major product and platform investment for OpenAI.