Sr Security Engineer, Supply Chain, Leo Security

Amazon Leo is a constellation of Low Earth Orbit satellites delivering high-speed broadband connectivity to unserved and underserved communities worldwide. We are looking for a Systems Security Engineer to join the Leo Infrastructure and IP Security team, where you will work within the supply chain security program protecting the contract manufacturers, component vendors, and service providers who build and handle Leo hardware. As the constellation grows, so does the supplier portfolio - and this new role will help the team scale its assessment capability to match. You will conduct onsite cybersecurity and physical security assessments, perform threat modeling for manufacturing and operational technology (OT) environments, and build AI-assisted tooling that makes the program more efficient. If you want to defend space-grade hardware from sophisticated threat actors while shaping a security program from its early stages, we want to hear from you.

Key job responsibilities

• Conduct threat modeling for supply chain and manufacturing environments, including OT/ICS and AI-integrated topologies, and translate identified risks into findings with clear severity ratings and remediation guidance.
• Plan and lead onsite security assessments at supplier and contract manufacturer facilities, evaluating cybersecurity controls, physical security posture, and operational practices against {NAME}"s supplier security requirements.
• Contribute to maturing the supply chain security program by refining assessment methodology, scoring criteria, standards, and operational processes as the supplier portfolio expands.
• Develop AI-assisted tooling to automate evidence collection, finding triage, and report generation, improving the efficiency and consistency of the assessment workflow.
• Partner with infrastructure, site operations, procurement, and hardware engineering teams to implement network security mitigations and ensure security requirements are embedded in supplier contracts.

A day in the life

You might spend a morning onsite at a contract manufacturer, walking the production floor with the site security team to evaluate physical access controls, camera coverage, and secure storage areas. That afternoon you review the supplier"s network architecture, identifying where sensitive data crosses trust boundaries and whether segmentation meets the bar. Between assessments, you refine scoring rubrics, build automation to streamline report generation, and collaborate with procurement to land security requirements in new supplier contracts.

About the team

Leo Infrastructure and IP Security protects the people, facilities, hardware, and supply chain behind a global satellite constellation. The supply chain security function manages assessment and risk reduction for Leo"s critical suppliers. You will work alongside security engineers covering network and physical security domains, software engineers building risk management tooling, and applied scientists modeling supply chain telemetry. The team is expanding to keep pace with the constellation"s growth, making this an opportunity to shape processes and standards from the ground up at an interstellar scope.