Security Engineer

ABOUT THE ROLE This is a founding security hire at an early-stage AI/ML infrastructure company, giving you the opportunity to build the security program from scratch. You will work across product, cloud infrastructure, compliance, and incident response to protect a platform used by leading AI labs and large enterprises. The role is critical to maintaining customer trust and safeguarding sensitive data assets at scale. WHAT YOU'LL DO - Lead detection and incident response end-to-end, from initial signal and alert through investigation, postmortem, and durable engineering improvements. - Own the security roadmap spanning product security, cloud and infrastructure security, corporate security, incident response, and compliance. - Secure APIs, platforms, and data systems through threat modeling, design and code reviews, authentication and authorization controls, and secrets management. - Build and operate monitoring, detection, and incident-response capabilities, and turn emerging threats into lasting improvements. - Own SOC 2 compliance and customer trust, including control design, security questionnaires, policy management, vendor reviews, and audits. - Partner with legal, commercial, engineering, and operations to translate data-license requirements into enforceable controls covering access, provenance, retention, deletion, isolation, and auditability. WHAT WE'RE LOOKING FOR - 5+ years of hands-on security engineering experience across infrastructure, detection and response, and identity domains. - Proven ability to lead security incidents end-to-end, from containment through root-cause analysis and follow-up engineering work. - Experience implementing or operating SOC 2 or a comparable security framework and translating requirements into technical controls. - Experience securing AI/ML infrastructure, agent execution environments, data platforms, or systems handling untrusted or sensitive data. - Experience designing and implementing data protection controls including access, retention, deletion, isolation, and auditability. - Experience working with legal teams, auditors, and customers on security questionnaires, policy management, and audit processes. - Strong communication skills with a broad range of stakeholders, including engineers, operations, legal, auditors, and customers. - High agency and sound judgment, with the ability to prioritize risks and make pragmatic decisions under uncertainty. - Relevant certifications (OSCP, AWS Security Specialist, OSWE, CKS, GIAC) or demonstrated expertise through CVEs, security tooling, or bug bounty work are a plus. COMPENSATION & BENEFITS Very competitive compensation package. Full medical, dental, and vision coverage. Additional benefits include a 401k, commuter benefits, and access to leading AI productivity tools. Visa sponsorship and relocation support are available for strong candidates. LOCATION On-site in San Francisco, CA or Singapore. Visa sponsorship and relocation support are provided.