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Added 1 min ago
T&
Thompson & Litton Inc
Thompson & Litton Inc
Johnson City, TN · Bristol, TN
- $106,000 to $122,500 USD / year
…and private sector clientele, has an immediate opening for a Senior Civil Engineer specializing in water and wastewater utility…
Added 2 mins ago
Full-Stack Engineer – Intelligent Engineering Platforms
Quest Global
Greenville, SC
This role turns powerful systems into usable systems - ensuring that innovation is not only technically brilliant but genuinely adopted.
Added 3 mins ago
Senior Software Engineer
Zelis Network Solutions, LLC
United States
Senior Software Engineer – Expert Claim Review
Added 4 mins ago
RH
Staff Software Engineer
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Minneapolis, MN
- $180,000 to $250,000 USD / year
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Added 4 mins ago
Senior Engineer, Transmission Lines
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As a Senior Engineer, you will provide senior level engineering/technical expertise on complex electric transmission design projects for high-voltage (HV) and extra high-voltage (EHV)…
Added 4 mins ago
Lead Engineer, Transmission Lines
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As a Lead Engineer, you will provide leadership and senior-level engineering/technical expertise on complex electric transmission design projects for high-voltage (HV) and extra…
Added 5 mins ago
Senior Project Manager, Water / Wastewater Design
GFT.
Woodbury, NY
GFT is seeking a Senior Project Manager – Water / Wastewater to help lead our Water Resources Design Team in New York! This role follows a hybrid work model, requiring regular attendance at…
Added 6 mins ago
Senior Equipment Engineer - Diffusion
GLOBALFOUNDRIES U.S. INC.
NY
…continents, GlobalFoundries makes possible the technologies and systems that transform industries and give customers the power to shape their markets. For more information, visit…
Added 7 mins ago
Senior IT Applications Engineer
Shumaker
Charlotte, NC · Charleston, SC · Columbus, OH · Akron, OH · Toledo, OH · Sarasota, FL · Tampa, FL · Minneapolis, MN
As a Senior IT Applications Engineer, you will serve as the technical lead and subject matter expert for the firm's legal and business-critical applications. This role is responsible for…
Added 7 mins ago
Senior Specialist, Electrical Engineer
L3Harris Technologies
Plano, TX · Greenville, TX
Job Title: Senior Specialist, Electrical Engineer
Added 9 mins ago
Urgent Need - Engineer IV - $65.00 per hour
Scope Services
Hopkinton, MA
The Senior Engineer acts as project leader and/or carries out assignments requiring mastery of subject matter and extensive experience in the compliance requirements associated with the…
Added 10 mins ago
Mechanical Commissioning Engineer I
Bureau Veritas
McLean
…and dynamic testing of mechanical, electrical, and controls systems, and for operating the system in normal, maintenance, and failure modes of operations by performing the following duties.…
Added 10 mins ago
Antenna Engineer
The Pennsylvania State University
Reston, VA
We are seeking an experienced Research and Development Engineer to join the Antennas, Computational Electromagnetics, and Propagation Department of the Applied Research Laboratory (ARL) at…
Added 10 mins ago
Application Security Engineer
The Pennsylvania State University
San Diego, CA
We are seeking a highly skilled Application Security Engineer with a strong foundation in security engineering to join the DevSecOps Team of the Joint Mission Integration and…
Added 11 mins ago
S
Network Engineer, Connectivity
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Denver, CO
- $103,000 to $139,000 USD / year
We securely integrate Operational Technology and Control Systems (OT/CS) from the building edge to the cloud, applying Zero Trust principles to protect critical infrastructure from cyber…
Added 11 mins ago
Mechanical Engineer- NPD
Clopay
Mason, OH
We currently have an opening for a Mechanical Engineer- New Product Development in our Mason, Ohio location.
Added 13 mins ago
MT
Manager, New Car Engineering
Metropolitan Transportation Authority
Brooklyn, NY
- From $115,252 USD / year
This position will report to the Senior Director, New Car Technology and be responsible for all engineering aspects of electrical/mechanical systems design for new car procurement(s) from…
Added 14 mins ago
Senior DevOps Engineer - SRC Logistics, Inc.
SRC Holdings Corp.
Springfield, MO
SRC Logistics is seeking a Senior DevOps Engineer to own the infrastructure and operational processes supporting our enterprise SaaS platforms. Our systems serve international enterprise…
Added 14 mins ago
Senior Underground Transmission Line Engineer 2 - Grid
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Hamilton, NJ
Experience with High Pressure Gas Filled or High-Pressured Fluid Filled pipe type cable systems and associated equipment
Added 14 mins ago
Senior Level Electrical Engineer
Sargent & Lundy
Clayton, MO
…involved in the design, modification, and analysis of electrical systems. Projects include power and energy, industrial, and renewable energy solar PV projects ranging from existing plant…
Added 18 mins ago
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Sr. Production Broadcast Engineer - NBC Sports
NBCUniversal
Stamford, CT
- $63 to $68 USD / hour
The Senior Broadcast Production Engineer is a highly experienced technical contributor responsible for maintaining the reliability of NBC Sports production environments while leading…
Added 19 mins ago
Senior Backend Software Engineer (Python / FastAPI)
CHAOS Industries
San Francisco, CA
Built real-time or streaming data systems: message queues, WebSockets, time-series data
Added 21 mins ago
Software Engineer, Enterprise Build
Robinhood
Menlo Park, CA
The team is built on the premise that AI multiplies what a senior engineer can own: agents do the first pass of assessment, porting, and scaffolding; you review, harden, and decide. The…
Added 24 mins ago
Senior Systems Engineer
SAIC
North Charleston, SC
SAIC is seeking an Senior Systems Engineer to join our team in support of Naval Electronic Warfare (EW) missions. In this senior-level role, you will be responsible for architecting and…
Added 25 mins ago
A
Civil Engineer
Actalent
Brooklyn, NY
- $75,000 to $100,000 USD / year
Job Title: Civil EngineerJob DescriptionThis Civil Engineer role focuses on performing detailed civil design for roadway geometrics, grading, and drainage systems while supporting both…

Closed listing

Amazon

Sr Security Engineer, Leo Security

Seattle, WA, United States

This opening has closed.

The original listing is kept below for reference.

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Job details

Posting language: English
Posted: Aug 15, 2026

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Original job description

Archived listing. The details below describe a past opening.

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

About employer

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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