Jobs in the United States

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Added 8 days ago
Engineering Applications Software Engineer l
California Institute Of Technology Jet Propulsion Laboratory
United States
Provide operations support as directed by the CDE Lead and DSN Realtime Operations
Added 8 days ago
Software Developer
Infinity Insurance Company
Jacksonville, FL
Kemper Insurance has a position available for a Software Developer to join the Advanced Engineering team in the Jacksonville, Florida office. This position will be involved in full stack…
Added 8 days ago
Software Dev Engineer II, NASC Tech
Amazon.com Services LLC
Bellevue, WA
- Lead end-to-end technical design and delivery, translating broadly defined business problems into scalable, extensible solutions.
Added 8 days ago
Java Full Stack Developer
GD Information Technology, Inc.
Remote, United States
Agile Methodology, Artificial Intelligence Techniques, Java Web Development, Python Software Development, React.jsCertifications:
Added 8 days ago
M
Java Architect
modis
New York, NY
- $49 to $60 USD / hour
Akkodis is seeking a Java Architect for a Contract with a client in New York, NY. The ideal candidate will lead the architecture and design of scalable, cloud-native Java solutions while…
Added 8 days ago
M
Assistant consultant
modis
San Antonio, TX
- $44 to $45 USD / hour
Akkodis is seeking an Assistant consultant for a Contract with a client in San Antonio, TX. The ideal candidate will lead enterprise content management and document processing solutions…
Added 8 days ago
UG
Senior Manager, AI/ML Engineering - Java Spring Boot - Remote
UnitedHealth Group
Minnetonka, MN
- $148,900 to $255,300 USD / year
area, you will be required to work in the office a minimum of four days per week
Added 8 days ago
Manager, Software Engineer Student LifeCycle Services
Western Governors University
Salt Lake City, UT
…team-based Agile/Scrum projects.Deep technical knowledge of Java based web applications using web services (REST/SOAP/SOA/XML/HTML).Competencies: Organizational Impact:Manages a team that…
Added 8 days ago
Snowflake / PL-SQL Developer
NTT DATA Americas, Inc.
Plano
We are currently seeking a Snowflake / PL-SQL Developer to join our team in Plano, Texas (US-TX), United States (US).
Added 8 days ago
Software Engineer
Asure Software
Austin, TX
3+ year of professional experience with a modern programming language such as C#/.NET, Java, or Node.js with TypeScript
Added 8 days ago
Senior Lead Software Engineer
Citibank, N.A.
United States
Senior Lead Software Engineer, Finance Technology
Added 8 days ago
Senior Staff Software Engineer, Platform
Rippling
San Francisco, CA · Seattle, WA · New York, NY
…event-driven dependency graph, workflow engine, search capabilities, developer ecosystem, and Rippling Query Language…
Added 8 days ago
NH
CCS Principal Software Engineer
Nomura Holdings, inc.
Jacksonville, FL
- $95,000 to $125,000 USD / year
The successful candidate will join the team to lead software development and system support covering regional and global platforms. Primary responsibilities include:
Added 8 days ago
SAP Group Reporting Lead
Experis USA
IL
Our client, life sciences industry, is seeking a ERP Developer - SAP to join their team. As a ERP Developer - SAP, you will be part of the SAP Group Reporting workstream supporting…
Added 8 days ago
Full-stack Engineer 4 (Manager, IC )
Capital One
McLean, VA
…technical direction across a modern stack anchored by Python, Java, and AWS serverless technologies. If you are looking to take ownership of high-impact engineering in a tight-knit, fast…
Added 8 days ago
Full-stack Engineer 4
Capital One
McLean, VA
Lead a portfolio of diverse technology projects and a team of developers with deep experience in distributed microservices, and full stack systems to create solutions that help meet…
Added 8 days ago
Java Backend Developer Junior
SAIC
Ashburn, VA
This position is hybrid-remote and requires 2 days per week on-site in Ashburn, VA · Location – Hybrid with on-site (Ashburn, VA) visits 2 days per week and if a mission need
Added 8 days ago
Sr Manager, Software Development & Engineering
Charles Schwab Inc.
Austin, TX
As a Senior Engineering Manager within Advisor Services Technology, you’ll lead multiple engineering teams responsible for building highly scalable, reliable applications that support a…
Added 8 days ago
Lead Site Reliability Engineer
Charles Schwab Inc.
Austin, TX
As a Reliability Engineering Lead within Cross Enterprise Services Site Reliability Engineering, you will drive the reliability, scalability, security, and performance of mission-critical…
Added 8 days ago
Software Development Engineer, Alexa Sensitive Content Intelligence (ASCI)
Amazon.com Services LLC
Bellevue, WA
…including agentic AI systems, LLMs, and LLM-based tools. You will lead the development and launch of new features that adopt agentic AI at scale, drive system architecture, influence team…
Added 8 days ago
WW
Lead Developer
World Wide Technology
St. Louis, MO
- $122,800 to $184,200 USD / year
World Wide Technology, Inc. currently has an opportunity available for a Lead Developer on the Order Management and Procurement team in the IT – Supply Chain organization, located at our…
Added 8 days ago
Senior Integration Engineer
Equs, Inc.
Remote, United States
We’re taking the EQUS Developer Toolkit to organizations of all kinds, from banks and other regulated institutions to employers, education providers, public bodies and digital platforms,…
Added 8 days ago
NP
Senior Fullstack Developer
Newhouse Project Consulting
Remote, United States
- $65 to $72 USD / hour
We have an opportunity for an experienced Senior Software Engineer to lead the development, enhancement, and support of multiple business applications. This role combines hands-on software…
Added 8 days ago
Sr Security Engineer, Leo Security
Amazon
Herndon, VA · Arlington, VA
…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…
Added 8 days ago
Software Development Manager, Leo Security
Amazon
Herndon, VA · Arlington, VA
We are looking for an experienced software development manager to lead the Engineering and R&D team within Leo Infrastructure and IP Security. The team defends the manufacturing lines,…

Amazon

Sr Security Engineer, Leo Security

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

Apply on usnlx.com About employer

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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

Apply on usnlx.com 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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Work requirements

Jobs in the United States