Sr Security Engineer, Leo Security

Amazon Leo is a constellation of Low Earth Orbit satellites that will provide low-latency high-speed broadband network connectivity to unserved and underserved communities around the world.

We are looking for a senior security engineer to join the founding cohort of the Engineering and R&D team within Leo Infrastructure and IP Security. The team defends the manufacturing lines launch sites and global ground infrastructure behind the constellation from the most sophisticated threat actors on the planet. The team builds a neurosymbolic reasoning platform: large language model agents combined with a knowledge graph and real-time asset state store that ground every conclusion in verifiable fact so every automated decision is auditable. You will be the security owner for that platform. A system that can triage security events execute containment and act on physical security is itself a high-value target and this role exists so the team that secures Leo does not ship its own unowned risk. This is a hands-on role for a technical contributor with deep expertise in offensive security who understands how to use AI on both sides: directing agents to test Leos defenses the way an adversary would and hardening the platforms own agents against the same techniques.

#### Export Control Requirement

Due to applicable export control laws and regulations candidates must be a U.S. citizen.


Key job responsibilities
You will be the single accountable security owner for every system the team builds and operates from the agent platform and detection pipeline to the data plane and self-service workflows. You will lead threat modeling and secure-design review on each system before it takes autonomous action thinking like an adversary to find the weaknesses in agent tool access prompt and data injection paths and containment authority before someone else does. You will design the privileged-access and insider-risk controls for systems that hold the keys to Leo physical security: the who-watches-the-watchers guarantee. You will translate threat intelligence into the adversary behaviors that drive the teams models and detections partnering with applied scientists on what to detect and with software engineers on how the platform defends itself. You will use AI to scale both offense and defense: directing the platforms agents to run offensive validation against Leos infrastructure and against the platform itself and turning what the offense finds into detections guardrails and controls. You will drive every finding whether from your own testing penetration tests or red-team engagements to closure with security gates built into the teams own delivery cadence rather than bolted on after.


A day in the life
One morning you might threat model a new agent capability before it graduates to automated execution mapping what an adversary could do with its tools and where its authority must be constrained. That afternoon you could be red-teaming the platforms reasoning layer crafting inputs that try to steer an agent into an action it should refuse. The next day you might take fresh threat intelligence distill it into the adversary behaviors the scientists should model next then review the access boundaries and audit evidence on a new data source before it is ingested. You will communicate security posture risks and strategic priorities to senior leadership with clarity and precision. You will question every trust relationship the platform depends on hold the security bar steady against delivery pressure and treat the teams own systems with the same adversarial rigor the team applies to everything else.


About the team
Leo Infrastructure and IP Security protects the people facilities hardware and supply chain behind a global satellite constellation. The Engineering and R&D team within this organization builds the platforms and tooling the security pillar teams operate on moving security operations from manual triage to correlation-based detection automated response and agentic AI. The team is composed of applied scientists software engineers and security engineers working across physical and digital security domains.

#### Inclusive Team Culture

In Amazon Security its in our nature to learn and be curious. Ongoing DEI events and learning experiences inspire us to continue learning and to embrace our uniqueness. Addressing the toughest security challenges requires that we seek out and celebrate a diversity of ideas perspectives and voices.

#### Training & Career Growth

Were continuously raising our performance bar as we strive to become Earths Best Employer. Thats why youll find endless knowledge-sharing training and other career-advancing resources here to help you develop into a better-rounded professional.

#### Work/Life Balance

We value work-life harmony. Achieving success at work should never come at the expense of sacrifices at home which is why flexible work hours and arrangements are part of our culture. When we feel supported in the workplace and at home theres nothing we cant achieve.


- 2 years of any combination of the following: threat modeling experience secure coding identity management and authentication software development cryptography system administration and network security experience
- Experience in progressive work within a software security team or related operating environment
- Experience architecting securing and operating Amazon Web Services
- Bachelors degree in a STEM field (Science Technology Engineering Mathematics) or 5 years of scripting programming or security code review in a common language such as Python Java or C experience
- - 5 years of non-internship experience in troubleshooting systems issues analyzing logs automating complex tasks using command line tools and identifying security issues risks and developing mitigation plans
- - Experience with offensive security including penetration testing red teaming or adversarial testing of production systems

- Experience conveying complex technical concepts to both technical and business audiences
- - Understanding of threat actor tradecraft and ability to emulate sophisticated attack techniques
- - Experience with AI/ML security including threats to AI systems adversarial machine learning prompt injection or AI supply chain security
- - Experience applying AI to security work including agentic tooling for offensive testing detection engineering or automated response
- - Experience with Red Team operations threat-based assessments or security research programs
- - Track record of building security tools or automation that scales across organizations
- - Experience designing privileged-access and insider-risk controls for high-consequence systems
- - Experience with security in regulated or export-controlled environments including data-handling boundaries and audit evidence
- - Experience translating threat intelligence into detections adversary emulation or threat hunting
- - Contributions to security research community through publications presentations or open-source tools

Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status disability or other legally protected status.

Our inclusive culture empowers Amazonians to deliver the best results for our customers. If you have a disability and need a workplace accommodation or adjustment during the application and hiring process including support for the interview or onboarding process please visit for more information. If the country/region youre applying in isnt listed please contact your Recruiting Partner.

The base salary range for this position is listed below. Your Amazon package will include sign-on payments and restricted stock units (RSUs). Final compensation will be determined based on factors including experience qualifications and location. Amazon also offers comprehensive benefits including health insurance (medical dental vision prescription Basic Life & AD&D insurance and option for Supplemental life plans EAP Mental Health Support Medical Advice Line Flexible Spending Accounts Adoption and Surrogacy Reimbursement coverage) 401(k) matching paid time off and parental leave. Learn more about our benefits at WA Seattle - 178400.00 - 226700.00 USD annually