Principal Security Engineer, Infrastructure Security

Responsibilities

• 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.

Requirements

• Deep understanding of security principles, best practices, and common vulnerabilities, including strong security judgment under ambiguity.
• 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.
• Track record of leading large, cross-org initiatives from concept to rollout, including navigating tradeoffs, driving alignment, and delivering measurable risk reduction.
• Deep expertise in the security of cloud platforms (e.g., Amazon AWS, Microsoft Azure), especially securing multi-cloud networks and infrastructure, and designing cloud-agnostic systems.
• Experience securing on-prem deployments and datacenters from construction to multi-tenant use.
• Familiarity with container security, orchestration security, and authentication/authorization.
• Strong analytical and problem-solving skills, with an ability to think critically and objectively assess security risks.
• Excellent communication skills, with the ability to convey complex security concepts to executive, technical, and non-technical stakeholders.
• Excitement about collaborating with cross-functional teams to build secure, reliable systems that scale globally.