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Added 2 mins ago
Structural Drafter
Actalent
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Create and modify construction documents based on engineer markups, sketches, and established design criteria.
Added 2 mins ago
Mechanical Engineer
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As a Manufacturing Engineer, you will be responsible for the development and improvement of composite part fabrication processes, methods, and tooling. Position may include design of tools,…
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MEP Specialist
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Design Engineer
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Forward Deployed Engineer
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Sr. AI Engineer (Full Stack)
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We at Peloton are looking for a scrappy, creative and fast-moving AI Engineer.
Added 14 mins ago
Software Engineer - Applied AI, Defense Applications
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Added 14 mins ago
Software Engineer - Applied AI, Defense Applications
Palantir Technologies
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Added 18 mins ago
GTM Engineer (Professional Services)
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As a GTM Engineer III within the Professional Services arm of ZoomInfo, you will independently own technical solution design and hands-on build work for defined workstreams within…
Added 19 mins ago
Launch Vehicle Software Integration Engineer
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MANTECH seeks a highly talented Launch Vehicle Software Integration Engineer with skills, background, and experience related to Launch Vehicle (LV) systems, project management, and software…
Added 20 mins ago
Software Development Engineer - AgentCore, AWS Agentic AI
Amazon Development Center U.S., Inc.
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Added 21 mins ago
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Tool Equipment Install Engineer (Contract)
Intel Corporation
AZ
- $52,000 to $200,000 USD / year
As a key member of the Project Execution Team, the Tool Equipment Install Engineer is an individual contributor reporting to the Tool Install Manager. A key to this role will be close…
Added 26 mins ago
QA Automation Technical Lead
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Experience leveraging AI tools for software design, test development, failure analysis, and code review, including effective prompt engineering and model/tool selection.
Added 27 mins ago
QA Automation Technical Lead
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Experience leveraging AI tools for software design, test development, failure analysis, and code review, including effective prompt engineering and model/tool selection.
Added 27 mins ago
Test Engineering - Software Engineer (Hybrid)
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In Precision Strike & Sensing Solutions, we design and manufacture state-of-the-art systems and technology that enable our customers to execute their precision strike missions. Looking for…
Added 30 mins ago
Gate-level Noise (Signal Integrity) / STA CAD Engineer
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Austin, TX · Sunnyvale, CA
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Added 34 mins ago
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Project Engineer
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- $39 to $63 USD / hour
We are seeking a Project Engineer with a strong experience in investment casting, metal casting, or foundry manufacturing environments. This role is responsible for managing projects from…
Added 41 mins ago
Propulsion HIL Hardware Engineer
Stellantis
Auburn Hills, MI
The Stellantis Propulsion organization is seeking a Propulsion HIL Systems & Hardware Engineer for the Propulsion System HIL team to work on Hardware-In-the-Loop simulators. The candidate…
Added 42 mins ago
Associate Electrical Engineer
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Added 47 mins ago
Principal Engineer
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Software engineering is changing. AI is changing not only how we write code, but how we design systems, solve problems, modernize technology, and operate software.
Added 49 mins ago
OSP Engineer
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United States
As an OSP Engineer III supporting the Frontier program at Pearce, you will lead complex outside plant (OSP) engineering projects supporting Frontier's fiber and copper telecommunications…
Added 54 mins ago
Senior Security Research Engineer
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Reverse engineer malware and study evasion. Learn how attackers bypass endpoint security controls in the wild, and feed that understanding directly into the protections you design and…
Added 54 mins ago
Senior DevOps and Application Engineer
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McLean, VA
Sunrise Senior Living seeks a hands-on engineer to build applications, APIs, automation, and scalable AWS cloud infrastructure. Combine software development and DevOps to deliver reliable,…

Amazon

Sr Security Engineer, Leo Security

Herndon, VA, United States
Arlington, VA, United States

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Job details

Posting language: English
Posted: Sep 11, 2026

Original job description

Description

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 Leo's defenses the way an adversary would, and hardening the platform's 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 team's 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 platform's agents to run offensive validation against Leo's 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 team's 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 platform's 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 team's 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, it's 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

We're continuously raising our performance bar as we strive to become Earth's Best Employer. That's why you'll 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, there's nothing we can't achieve.

Basic Qualifications

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
Bachelor's 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

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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

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Experience with offensive security, including penetration testing, red teaming, or adversarial testing of production systems

Preferred Qualifications

Experience conveying complex technical concepts to both technical and business audiences

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Understanding of threat actor tradecraft and ability to emulate sophisticated attack techniques

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Experience with AI/ML security, including threats to AI systems, adversarial machine learning, prompt injection, or AI supply chain security

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Experience applying AI to security work, including agentic tooling for offensive testing, detection engineering, or automated response

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Experience with Red Team operations, threat-based assessments, or security research programs

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Track record of building security tools or automation that scales across organizations

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Experience designing privileged-access and insider-risk controls for high-consequence systems

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Experience with security in regulated or export-controlled environments, including data-handling boundaries and audit evidence

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Experience translating threat intelligence into detections, adversary emulation, or threat hunting

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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 https://amazon.jobs/content/en/how-we-hire/accommodations for more information. If the country/region you’re applying in isn’t 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 https://amazon.jobs/en/benefits .

USA, VA, Arlington - 178,400.00 - 226,700.00 USD annually

USA, VA, Herndon - 178,400.00 - 226,700.00 USD annually

USA, WA, Seattle - 178,400.00 - 226,700.00 USD annually

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More about this job

Skills

Supply chain management
Software development
System administration
Python
Oracle Java
C++
Troubleshooting
Penetration testing
ML
Machine learning
Research
Presentation skills
Recruitment
Mental health

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