Principal Software Engineer, Codex Cyber

Responsibilities

• Define and execute the technical roadmap for Codex Cyber’s security products, including evaluations, safeguards, trusted-defender workflows, and deployment decisions.
• Work with trusted defenders, customers, and partner teams to understand cyber use cases, evaluate risk, and turn feedback into product and research priorities.
• Shape cyber-specific model training and access patterns, including data, evaluations, validation, and deployment criteria.
• Build and validate systems for measuring cyber capabilities, monitoring misuse risk, and proving safeguards work in practice.
• Collaborate with Safety/Preparedness, Research, Security, Legal, Communications, Go-to-Market, and external partners on company-wide cyber priorities.
• Translate frontier cyber research into launch-ready tools, operational playbooks, and durable infrastructure for Codex and security products.

Requirements

• 10+ years of experience in Python, TypeScript/JavaScript, or similar languages, with the judgment to build reliable systems in ambiguous, high-stakes domains.
• Experience in ML systems, security products, cyber evaluations, model training, safety engineering, or trusted customer deployments.
• Ability to think clearly about cyber capability, misuse risk, access patterns, safeguards, and deployment tradeoffs in high-stakes environments.
• Enjoy 0 -> 1 environments, can navigate ambiguity, and are excited to build security products that bring frontier AI capabilities to trusted defenders responsibly.
• Can move fluidly between product launches, customer and defender partnerships, model training, evaluation science, and security research.

Nice-to-Haves

• Background in ML systems, security products, cyber evaluations, model training, safety engineering, or trusted customer deployments.