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Modeling and Simulation Engineer - ACT-Open Rank (Mid Level)-Colorado Springs, CO
Colorado Springs, CO
The Signals and Systems Division (SASD) in the Advanced Concepts and Technologies Laboratory (ACT) seeks qualified candidates for the position of Modeling and Simulation (M&S) Engineer in…
Added 1 min ago
IC
Building Engineer
ISS Conversational ATS
Wilmington, DE
- $41 to $44 USD / hour
Ensures the CMMS system software is up to date with accurate and appropriate data around assets and maintenance programs.
Added 1 min ago
TG
Engineering Project Manager - Drinking Water
Trilon Group
Hartford, CT
- $140,000 to $170,000 USD / year
Conduct and supervise hydraulic modeling, system capacity analyses, water distribution master planning, and lead service line inventory and replacement programs
Added 1 min ago
Engineering Project Manager - Drinking Water
Trilon Group
Springfield, MA
Conduct and supervise hydraulic modeling, system capacity analyses, water distribution master planning, and lead service line inventory and replacement programs
Added 1 min ago
Engineering Project Manager - Drinking Water
Trilon Group
Providence, RI
Conduct and supervise hydraulic modeling, system capacity analyses, water distribution master planning, and lead service line inventory and replacement programs
Added 1 min ago
Engineering Project Manager - Drinking Water
Trilon Group
Boston, MA
Conduct and supervise hydraulic modeling, system capacity analyses, water distribution master planning, and lead service line inventory and replacement programs
Added 2 mins ago
Test and Integration Engineer
The Aerospace Corporation
Chantilly, VA
Lead coordination and integration efforts across Government, SETA, and contractor teams to successfully field highly classified mission-critical spacecraft systems for national security,…
Added 6 mins ago
FH
Civil Engineer (Structural) - DIRECT HIRE
Federal Highway Administration
Carson City, NV
- $99,218 to $158,322 USD / year
The employee serves as a structural engineer for the Federal Highway Administration (FHWA) Division office with responsibility for managing and promoting the Federal highway programs…
Added 6 mins ago
AA
Supervisory Production Facility Branch Chief
Animal and Plant Health Inspection Service
Edinburg, TX
- $125,776 to $163,514 USD / year
BASIC REQUIREMENT: Engineer (0801): Degree: Engineering. To be acceptable, the program must: (1) lead to a bachelor's degree in a school of engineering with at least one program accredited…
Added 9 mins ago
FH
Civil Engineer (Highway) - DIRECT HIRE
Federal Highway Administration
Ashburn, VA
- $57,736 to $91,815 USD / year
The ideal candidate for this position is a design engineer with experience developing, monitoring, and adhering to the design, budget, and schedule for roadway construction projects and…
Added 9 mins ago
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ELECTRICAL ENGINEER
Naval Air Systems Command
Patuxent River, MD
- $143,913 to $197,200 USD / year
…will provide subject matter expertise in the application of advanced concepts, principles, equipment and/or test and evaluation techniques for aircraft Electrical Power and Wiring Systems.…
Added 9 mins ago
UA
Interdisciplinary (Engineer/Architect)
U.S. Army Corps of Engineers
Tinker AFB, OK
- $74,678 to $116,362 USD / year
Basic Requirements (for Engineers): A. Degree: Engineering. To be acceptable, the program must: (1) lead to a bachelor's degree in a school of engineering with at least one program…
Added 15 mins ago
CHIEF ENGINEER
HPI Real Estate Services & Investments
Dallas, TX
Chief Engineer is responsible for the safe and efficient operation of building(s) and works to maintain the integrity and value of the physical assets. Provides the highest quality of…
Added 17 mins ago
Commissioning Field Engineer - Mechanical
Hoffman Construction Company
Boise, ID · ID · Hauser, ID · Kuna, ID · Moscow, ID · Post Falls, ID · Lewiston Orchards, ID
Position Summary: The Field Commissioning Engineer - Mechanical, will lead our commissioning team and information from start to finish for large semiconductor projects. The Field…
Added 18 mins ago
Network Engineer
MANTECH
Norfolk, VA
Shape the future of defense with MANTECH! Join a team dedicated to safeguarding our nation through advanced tech and innovative solutions. Since 1968, we’ve been a trusted partner to the…
Added 21 mins ago
Ground SEIT Engineer (Experienced or Lead)
The Boeing Company
Seal Beach, CA · El Segundo, CA
The Ground SEIT Engineer will join a high-performing team that is immersed in high intensity development projects. As a member of our team, you will have the opportunity to work proprietary…
Added 23 mins ago
Lead Deployment Engineer
Celonis
NC
As a Deployment Engineer, you are the backbone of Celonis delivery. You lead the hands-on implementation of Celonis solutions for enterprise customers, combining platform expertise with…
Added 24 mins ago
Engineer I – ESTE Systems Engineer
BAE Systems
Boulder, CO
…feedthrough hardware, and other board, box, instrument, and system level test sets. Draw cable interconnect diagrams; thermal vacuum plates and manage interface control documents. Develop…
Added 29 mins ago
Senior Manager - Data Mining & Exploratory Intelligence
EXL Talent Acquisition Team
United States
…exploratory claims analysis and support the development of advanced data mining capabilities. This role will focus on identifying claims patterns, anomalies, and potential overpayments…
Added 29 mins ago
Senior Mechatronics Engineer
Auris Health Inc. Legal Entity
Santa Clara, CA
As a member of the Ottava R&D team you will join us on our journey to design and build one of the world's most advanced medical robotic platforms. You will work alongside all engineering…
Added 30 mins ago
Piping Field Engineer - Testing
Bechtel Corporation
New Albany, OH
…program for piping, tubing, and components. Reporting to the Lead Pipe Testing Field Engineer, you will independently plan, prepare, execute, and document hydrostatic, pneumatic, and…
Added 34 mins ago
Principal Project Engineer (Onsite)
RTX
United States
Pratt & Whitney is seeking an experienced Principal Project Engineer to lead and coordinate projects supporting commercial and military gas turbine static hardware. This role provides…
Added 34 mins ago
Principal Integration & Test Engineer - Secure Systems
RTX
United States
Collins Aerospace, an RTX company, is a leader in technologically advanced and intelligent solutions for the global aerospace and defense industry. Collins Aerospace has the capabilities,…
Added 36 mins ago
Sr Engineer - F&E EOS
Amgen
Washington D.C., DC
Let’s do this. Let’s change the world. In this vital role you will lead serve as the business process owner for maintenance process and CMMS capabilities, partnering with technical platform…
Added 36 mins ago
Intune Engineer
Leidos
Washington, DC
Lead operations and maintenance for SEC-issued endpoints, including laptops, desktops, virtual computers, and mobile devices.

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. A top secret clearance with SCI access is required.

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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