Jobs in the United States

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Added 1 min ago
Engineer II (3492)
Honeywell
Kansas City, MO
Added 7 mins ago
CAS/COTS Systems Integration Engineer - Senior
Enroute Computer Solutions Inc
Egg Harbor Twp, NJ
The engineer serves as a technical integrator rather than solely as a Linux administrator. They need to understand how operating systems, applications, hardware, displays, networking,…
Added 7 mins ago
CAS/COTS Systems Integration Engineer - Mid
Enroute Computer Solutions Inc
Egg Harbor Twp, NJ
The engineer serves as a technical integrator rather than solely as a Linux administrator. They need to understand how operating systems, applications, hardware, displays, networking,…
Added 22 mins ago
SSD Mfg NPI Product Engineer, Nitro SSD
Amazon Data Services, Inc.
Seattle, WA · Cupertino, CA
…work closely with our ODMs, CMs, internal AWS hardware and software development teams, and with upstream component vendors to monitor and improve the incoming hardware quality of AWS…
Added 39 mins ago
Systems Engineer
Advanced Acoustic Concepts, LLC
Lemont Furnace, PA
…system specifications. Support acquisition of hardware and software (or subcontractor services as…
Added 41 mins ago
Software Engineer II - Building Applications
Pacific Northwest National Laboratory
Jefferson City, MO
The BS&DG is seeking a Software Engineer II - Building Applications with strong knowledge of software engineering and web application development to contribute to building technology…
Added 50 mins ago
AS
Senior Systems Engineer
Andromeda Systems Incorporated
Jacksonville, FL
- $48 to $87 USD / hour
ASI is seeking a Senior Systems Engineer to support DoD aviation programs through reliability analysis, lifecycle sustainment, and readiness assessments. This highly motivated individual…
Added 51 mins ago
Mojo Libraries Engineer (Copy)
Modular
Remote, United States
We are looking for a motivated engineer to join the Hardware Enablement team at Modular. In this role you will work across the Modular software stack, from Mojo kernels and the graph…
Added 1 hour ago
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Systems Test Engineer
Booz Allen Hamilton
Aurora, CO
- $86,800 to $198,000 USD / year
As a Systems Test Engineer you will lead a test team that will work with Booz Allen colleagues and the U.S. Space Force to
Added 1 hour ago
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Automation Test Engineer
Booz Allen Hamilton
Aurora, CO
- $69,400 to $158,000 USD / year
…You've evolved your skills into strategy through a long path of software development accomplishments and the curiosity to understand how all the pieces of an IT ecosystem fit together. Are…
Added 1 hour ago
Principal Systems Engineer
2HB Incorporated
Annapolis Junction, MD
2HB Incorporated is seeking a Principal Systems Engineer in order to support its government customer in Annapolis Junction, MD.
Added 1 hour ago
Software Integration Engineer
2HB Incorporated
Annapolis Junction, MD
2HB Incorporated is seeking a Software Integration Engineer to support its government customer in Annapolis Junction, MD. The Software Integration Engineer shall be responsible for working…
Added 1 hour ago
Test Engineer
2HB Incorporated
Annapolis Junction, MD
2HB Incorporated is seeking a Test Engineer to support its government customer in Annapolis Junction, MD. The Test Engineer shall be responsible for planning, developing, executing, and…
Added 1 hour ago
LN
Senior Project Manager
Luster National
Sacramento, CA
- $140,000 to $200,000 USD / year
Project Management Professional (PMP) certification (Project Management Institute), Professional Engineer (PE) license, PRINCE2 certification, or comparable engineering or project…
Added 1 hour ago
LN
Railroad/Roadway bridge and Guideway Inspector
Luster National
Fresno, CA
- $120,000 to $200,000 USD / year
We’re seeking an experienced Railroad/Roadway Bridge and Guideway Engineer to support large, heavy-civil infrastructure programs, including highways, roads, bridges, transit (both rail and…
Added 1 hour ago
Software Engineer, Runtime Infrastructure
Nominal
NY
Nominal runs mission-critical software wherever our customers need it: in our cloud, in theirs, and on disconnected networks for defense programs. An engineer might be watching a vehicle in…
Added 2 hours ago
Software Automation & Platform Engineer - Federal Health IT
Rackner
Remote, United States
Engineer and optimize GitLab CI/CD pipelines and infrastructure-as-code solutions, incorporating automated testing, quality checks, and security practices to strengthen software delivery.
Added 2 hours ago
Product Security Engineer
Nominal
NY · WA
This is a high-ownership role for a software engineer who has moved into security and knows that secure products are designed in, not bolted on at the end.
Added 2 hours ago
Staff Software Engineer, Applied AI
SuperDial
Burlingame, CA
SuperDial is seeking a Staff Software Engineer, Applied AI to build and scale the backend systems that power LLM applications in healthcare. This role is ideal for an engineer who thrives…
Added 3 hours ago
SME Network Engineer
CACI International
Ashburn, VA
CACI is seeking a SME Network Engineer for the Global Mission Operations Support (GMOS) contract, supporting the Department of State. This role offers a unique opportunity to enhance…
Added 3 hours ago
Senior Network Engineer (Firewall)
CACI International
Ashburn, VA
CACI is seeking a Senior Network Engineer (Firewall) for the Global Mission Operations Support (GMOS) contract, supporting the Department of State. This role offers a unique opportunity to…
Added 3 hours ago
Director, Federal Sales: Air Force and Space Force (Government)
AT&T
Chantilly, VA
· Build a partner strategy across systems integrators, OEMs, cloud and security providers, small businesses, and contract vehicle holders to improve access, differentiation, and win…
Added 3 hours ago
Director, Federal Sales: Navy and Marine Corps (Government)
AT&T
Chantilly, VA
· Build a partner strategy across systems integrators, OEMs, cloud and security providers, small businesses, and contract vehicle holders to improve access, differentiation, and win…
Added 3 hours ago
Web Developer
CACI International
Chantilly, VA
Strong knowledge of SQL, web development principles, software-development practices, coding standards, and application security.
Added 3 hours ago
Junior C# Software Engineer
CACI International
Virginia Beach, VA
CACI is looking for a C# software engineer to design, develop, and maintain software tools that keep aircraft safe and operational. Your work will directly impact the Navy’s F/A-18 fleet…

KGS LLC

Information Systems Security Engineer (ISSE)

Arlington, VA, United States

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Job details

Posting language: English
Posted: Nov 4, 2026

Original job 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 seeking a Senior Information Systems Security Engineer (ISSE) to raise the security bar for a portfolio of classified national security systems. You will work backward from mission and authorization outcomes, translate complex security requirements into practical engineering decisions, and own security across the full system lifecycle - from concept and architecture through assessment, authorization, operations, change, and decommissioning.

This is a senior individual-contributor role for an engineer who can operate independently in ambiguous environments, dive into technical details, and influence system owners, architects, developers, operations teams, ISSMs/ISSOs, assessors, and authorizing officials. You will balance immediate mission needs with durable security controls, automate recurring work, and communicate risk clearly to technical and senior leadership audiences.

The successful candidate has both breadth and depth: hands-on knowledge of operating systems, networks, cloud and virtualization, identity, logging, vulnerability management, cryptography, and secure architecture, combined with demonstrated mastery of the Risk Management Framework (RMF) for classified systems. This position requires that the candidate selected be a US Citizen and must currently possess and maintain an active TS/SCI security clearance.

Key job responsibilities

Own end-to-end security engineering for multiple concurrent classified systems and enclaves, establishing priorities, schedules, risks, dependencies, and decision pathds with minimal direction.
Lead system security architecture and design reviews; define security requirements, trust boundaries, control allocation, data flows, threat models, and defense-in-depth strategies for on-premises, cloud, hybrid, and disconnected environments.
Drive RMF activities through authorization and continuous monitoring, including categorization, control tailoring, implementation guidance, assessment readiness, risk acceptance packages, significant-change analysis, and authorization maintenance.
Develop and maintain high-quality authorization evidence, including system security plans, control implementation statements, security control traceability matrices, architecture diagrams, hardware/software inventories, test plans, assessment artifacts, risk assessments, plans of action and milestones, and continuous-monitoring records.
Partner with system owners, ISSMs, ISSOs, architects, administrators, developers, security control assessors, authorizing officials, customers, and facility/industrial-security teams to resolve findings and make well-reasoned risk decisions.
Engineer and validate secure configurations using applicable government security standards and baselines.
Lead technical investigations of vulnerabilities, incidents, control failures, and anomalous results for the applicable environments; determine root cause, assess mission impact, define containment and remediation, and create mechanisms that prevent recurrence.
Build automation, reusable templates, dashboards, and quality checks that reduce manual effort, shorten authorization cycle time, improve evidence consistency, and provide leadership with actionable measures of residual risk.
Make and document security trade-offs that distinguish non-negotiable risk from reversible decisions; escalate clearly when mission, schedule, and security objectives conflict.
Mentor engineers and security practitioners, conduct peer reviews, raise documentation and engineering standards, and serve as a trusted technical resource across programs.

A day in the life You may begin by documenting a proposed architecture change for a classified enclave, then lead a working session to close assessment findings, validate a control implementation against technical evidence, and brief leadership on the risk of a schedule decision. Later, you might automate an evidence-quality check, review vulnerability trends across the portfolio, coach an engineer through a difficult control interpretation, or coordinate with an assessor before an authorization milestone. You move comfortably between technical depth, program judgment, and concise executive communication.

About the team Leo Security protects the people, facilities, hardware, supply chain, and classified communications behind a global satellite constellation. The ISSE function within this team owns the security architecture, administration and compliance of all Leo classified networks. The team works directly with engineering, program security, and government customers to architect and maintain secure sensitive networks across ALG sites. Basic qualifications

4+ years of non-internship background in troubleshooting systems issues, analyzing logs, or automating complex tasks using command line tools experience
5+ years of work in identifying security issues and risks, and developing mitigation plans experience
4+ years of (non-internship) scripting, programming, and security code review in common programming languages experience
Knowledge of at least two of the following programming languages: Scala, Java, Python, C/C++, or Go
Experience (non-internship) in scripting, programming, and security code reviewing in a common programming language
Experience as a mentor, tech lead or leading an engineering team Preferred qualifications
Experience applying threat modeling or other risk identification techniques or equivalent
10+ years of relevant experience, including technical leadership as a senior ISSE, security architect, ISSM, lead ISSO, security control assessor, or equivalent role supporting high-impact national security missions.
Advanced knowledge in at least two security domains, such as cloud security, zero trust, identity, secure networking, cross-domain solutions, platform hardening, cryptography/key management, detection engineering, software security, or incident response.
Experience securing AWS or another major cloud platform in regulated or isolated environments, including infrastructure as code, cloud-native logging, IAM, network segmentation, and continuous control monitoring.
Proficiency in Python, PowerShell, Bash, or another scripting language used to automate security validation, reporting, evidence collection, or operational workflows.
One or more relevant certifications aligned to the assigned work role and program needs, such as CISSP, ISC2 CGRC, SecurityX (formerly CASP+), CCSP, CISM, GIAC certifications, or an approved cloud-security certification. Certification alone does not replace formal DoDM 8140.03 work-role qualification.
Experience developing metrics that connect security activity to risk reduction, assessment quality, remediation aging, authorization health, or engineering efficiency.

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

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More about this job

Skills

Security regulations
Risk management
Leadership
Quality assurance procedures
Communication skills
Supply chain management
Regulatory compliance
Troubleshooting
Programming languages
Scala
Oracle Java
Python
C
C++
Go
Incident response
AWS
Infrastructure as code
Identity and access management
Microsoft PowerShell
Bash
Reporting
CISSP
CISM
Recruitment
Mental health

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