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Added 5 mins ago
Senior Associate, Electrical Engineer
L3Harris Technologies
Yorba Linda, CA
Job Title: Senior Associate, Electrical Engineer
Added 8 mins ago
Senior RF Design Engineer
Astranis
San Francisco, CA
…buyers with stringent requirements for uptime, data security, network visibility, and…
Added 13 mins ago
Principal Software Engineer
DQQ Cohesity Inc.
Santa Clara, CA
We are looking for an exceptional Principal Engineer (L8) to lead the architecture and development of next-generation cloud-native services and platform infrastructure powering large-scale…
Added 14 mins ago
COMSEC Operations
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Cryptographic modernization at the Department is live work, not a roadmap item - post-quantum migration, network-delivered key, and a next-generation accountability platform are all in…
Added 14 mins ago
COMSEC Operations Junior
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Cryptographic modernization at the Department is live work, not a roadmap item - post-quantum migration, network-delivered key, and a next-generation accountability platform are all in…
Added 15 mins ago
OE
Embedded Systems Engineer - Controls
OTTO Engineering
Carpentersville, IL
- $90,000 to $115,000 USD / year
· At OTTO, we don’t just manufacture products - we engineer mission-critical solutions with precision and pride. Our Controls Division designs and manufactures high quality, comprehensive…
Added 16 mins ago
Sr. Verification Engineer
AMC OU Ambarella Corp
United States
Ambarella is seeking an experienced Senior Verification Engineer to lead verification of advanced SoCs incorporating image and video processing, DSP, CPUs, and neural network accelerators.
Added 20 mins ago
Senior Windows Engineer
MANTECH
Laurel, MD
MANTECH is seeking a motivated, career and customer-oriented Senior Windows Engineer, to join our team in Laurel, MD.
Added 20 mins ago
Senior Software Development Engineer, EC2 Instance Networking
Amazon Development Center U.S., Inc.
Seattle, WA
…spanning thousands of accelerators, clusters demanding millions of network endpoints, and fabrics pushing hundreds of gigabits per second. We build the networking primitives that make these…
Added 22 mins ago
PI
Sr Software Engineer
PayPal, Inc.
Austin, TX
- $130,500 to $193,600 USD / year
We operate a global, two-sided network at scale that connects hundreds of millions of merchants and consumers. We help merchants and consumers connect, transact, and complete payments,…
Added 28 mins ago
MS
Senior Network Systems Engineer - Lorton, VA
Military Spouse Jobs & VetJobs
United States
- $130 to $150 USD / hour
Suvi, an Akima Company, is looking for a Network Systems Engineer to support a mission-oriented, Law Enforcement organization in National Capital Region. This individual will serve as a…
Added 28 mins ago
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Senior Automation Scientist/Engineer - Biologics Engineering
AstraZeneca
Gaithersburg, MD · Gaithersburg
- $124,000 to $171,000 USD / year
We are seeking a Senior Automation Scientist/Engineer to help drive this transformation by embedding laboratory automation and robotics into our workflows and shaping the future of…
Added 31 mins ago
Junior DevOps Engineer - Platform Deployment & Support
Absolute Business Solutions Corp
Herndon, VA
ABSC is seeking a Secret or TS/SCI-cleared Junior DevOps Engineer – Platform Deployment & Support to support the NGA Data Modernization Services (DMS) program.
Added 33 mins ago
Senior Specialist, Electrical Engineer
L3Harris Technologies
Yorba Linda, CA
Job Title: Senior Specialist, Electrical Engineer
Added 33 mins ago
Senior Specialist, Information Security Systems Engineer 1
L3Harris Technologies
Greenville, TX
Job Title: Senior Associate, Information Security Systems Engineer (ISSE)
Added 38 mins ago
K
Network Engineer
KaylaTek
Washington, DC
- $121,000 to $123,000 USD / year
The Senior Network Engineer performs critical tier-tier engineering, administration, and security hardening of enterprise-level network infrastructures. Ensures high availability, rapid…
Added 41 mins ago
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Sr. Principal Integration Engineer - Cloud Solutions
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Remote, United States
- $137,000 to $229,000 USD / year
The Principal Azure Cloud Solutions Engineer serves as a senior technical authority responsible for designing, implementing, and improving secure, scalable, and resilient solutions on…
Added 43 mins ago
System Engineer
Exegy
St Louis, MO
We are seeking an experienced System Engineer to join our Managed Services Engineering (MSE) team in St. Louis, MO. You will be our lead specialist in Linux systems, bare-metal…
Added 45 mins ago
Senior Excitation Engineer
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Warrenville, IL · Wilmington, DE · Greenville, SC
ENTRUST is seeking a talented and driven Senior Excitation Engineer to join our growing team of experts in the electric power generation sector. In this senior-level role, you will bring…
Added 47 mins ago
Lead Software Engineer - Python
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IRVING, TX · CHARLOTTE, NC
Wells Fargo is seeking a Lead Software Engineer (Python) within the Secured Network Services organization. This role will focus on designing and delivering automation solutions that enable…
Added 48 mins ago
Senior Network Engineer / FISMA Compliance Support - PCLOB
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Added 48 mins ago
Senior Navigation/IMU Engineer
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The Advanced Effector Guidance Systems (AEGS) Department is searching for a Navigation/IMU engineer with which will work with the experienced Navigation/IMU engineers in support of…
Added 51 mins ago
Software Quality and Process Assurance Engineer (Hybrid - Windsor Locks, CT)
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…aerospace systems? As a Software Quality and Process Assurance Engineer, you’ll support the development of embedded software by ensuring compliance with industry, contractual, and…
Added 56 mins ago
Senior Network Engineer
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Laurel, MD
As a Senior Network Engineer, you'll provide senior-level engineering expertise across the network and telecommunications lifecycle - from architecture and design through integration,…
Added 1 hour ago
Intern, AI Application Engineer
Samsung Semiconductor
Folsom, CA
Configure KV cache offloading (LMCache, NVIDIA Dynamo/NIXL) to network-attached storage over NVMe-oF and RDMA, first on a BlueField-3 storage server and then on our network-attached SSD…

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

•

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

•

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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