Jobs in the United States

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Added 2 mins ago
System Engineer
Trace3
Colorado Springs, CO
The System Engineer supports North American Aerospace Defense Command (NORAD) Cheyenne Mountain Complex (NCMC) Integrated Tactical Warning/Attack Assessment (ITW/AA) and Space Support…
Added 4 mins ago
Test Engineer
Torch Technologies, Inc.
Eglin AFB, FL
Torch Technologies is seeking a Test Engineer (entry-level) to provide resources with knowledge of professional aerospace engineering concepts, principles, practices, standards, methods,…
Added 4 mins ago
Store Separation Test Engineer - Aerodynamic Wind Tunnel
Torch Technologies, Inc.
United States
Torch Technologies is seeking a Store Separation Test Engineer, a critical member of the Arnold Engineering Development Complex (AEDC) 716th Test Squadron team, responsible for planning,…
Added 4 mins ago
Senior Mechanical Engineer
Torch Technologies, Inc.
Eglin AFB, FL
The ideal candidate is a collaborative engineer who combines technical excellence with practical problem-solving skills, initiative, and a commitment to customer support. Working alongside…
Added 5 mins ago
Electrical Engineer
Torch Technologies, Inc.
Eglin AFB, FL
Torch Technologies is seeking an Electrical Engineer to support mission-critical engineering efforts at Eglin AFB. This position provides technical expertise in the design, integration,…
Added 6 mins ago
Principal Modeling & Simulation Software Engineer
KBR Wyle Services, LLC
United States
KBR is seeking a highly skilled and experienced Principal Modeling & Simulation Software Engineer to join a dynamic, high-performing, multidisciplinary team of military domain SMEs,…
Added 6 mins ago
Space Systems Engineer (Senior)
KBR Wyle Services, LLC
Washington, DC
The Space Systems Engineer serves as a critical position responsible for the system-wide management and technical execution of complex spacecraft programs. The position provides leadership…
Added 6 mins ago
Space Systems Engineer (Senior / Sme)
KBR Wyle Services, LLC
Washington, DC
The Space Systems Engineer serves as a critical position responsible for the system-wide management and technical execution of complex spacecraft programs. The position provides leadership…
Added 7 mins ago
Senior Principal Engineer
Leidos
Bridgewater, VA
Possess an active DoD Secret clearance with ability to acquire and maintain Top Secret/SCI.
Added 7 mins ago
Frontend Software Engineer - Secret
Parsons Corporation
Centreville, VA
Parsons is looking for an amazingly talented Front End Software Engineer to join our team! In this role you will get to:
Added 7 mins ago
Senior Cloud Engineer/Architect (AWS)
Leidos
Fort Belvoir, VA
The Senior Cloud Engineer/Architect (AWS) supports design of a new, modernized updated and upgraded capabilities for DTRA. This role will be responsible for tech requirement definition,…
Added 7 mins ago
Data/Visualization Engineer SME
Leidos
Fort Belvoir, VA
Leidos is seeking a highly skilled Data Visualization Engineer SME specializing in data visualization to join our team in Fort Belvoir, VA or Albuquerque, New Mexico. The primary focus of…
Added 7 mins ago
Engineers to support our EMALS/AAG teams in Lakehurst, NJ!
SAIC
Lakehurst, NJ
…(EMALS) and/or the Advanced Arresting Gear (AAG). These critical systems are key to naval aircraft carrier operations, utilizing advanced electromagnetic and modular technologies to ensure…
Added 7 mins ago
Systems Development Engineer, Deployment and Support, Google Public Sector
Google
Reston, VA
Share Systems Development Engineer, Deployment and Support, Google Public Sector
Added 7 mins ago
Full Stack Software Engineer (Associate/Experienced)
The Boeing Company
Herndon, VA
The ideal candidate is a self-motivated, high-performing software engineer with the aptitude for designing, developing, and maintaining complex multi-tiered application software systems.…
Added 7 mins ago
Java Software Engineer (Associate/Experienced)
The Boeing Company
Herndon, VA
The ideal candidate is a self-motivated, high-performing software engineer with an aptitude for designing, developing, and maintaining complex multi-tiered application software systems. The…
Added 7 mins ago
DevOps Engineer I (Ability to Obtain Secret clearance Required)
Akima
Herndon, VA
Suvi Global Services is looking for a talented Jr. DevOps Engineer to add to their dynamic team supporting highly visible federal contracts. This role supports and provides security…
Added 7 mins ago
Secret Cleared Network Engineer
Insight Global
Norfolk, VA
Insight Global is seeking a skilled Network engineer to join a large federal contract. This person will be responsible for working across, Cisco, Brocade and Juniper networks and bring…
Added 7 mins ago
Senior Information System Security Engineer
ManTech
Norfolk, VA
MANTECH seeks a motivated, career and customer-oriented Senior Information System Security Engineer (ISSE) to join our team in Norfolk, VA. This is a remote position.
Added 7 mins ago
Application Engineer - DevOps & Engineering Tools
RTX Corporation
richmond, VA
We are seeking an experienced Application Engineer - DevOps & Engineering Tools to join our agile team! In this role you will deploy, administer, and support new and existing…
Added 7 mins ago
S
MECHANICAL ENGINEER
SUPSHIP
Newport News, VA
- $90,838 to $118,092 USD / year
Drug test No Security clearance Secret Financial disclosure required No
Added 11 mins ago
Solutions Engineer, Federal (U.S. Navy)
Riverbed Technology, Inc.
Home Office, MD
Experience as a Solutions Engineer, Sales Engineer, Systems Engineer, Solutions Architect, or similar customer-facing technical professional.
Added 13 mins ago
Systems Engineer
Bay Systems Consulting Inc.
Colorado Springs, CO
Clearance required: Secret, able to obtain TS/SCI
Added 13 mins ago
Systems Engineer II
Bay Systems Consulting Inc.
Colorado Springs, CO
Clearance required: Secret, able to obtain TS/SCI
Added 13 mins ago
Systems Engineer III
Bay Systems Consulting Inc.
Colorado Springs, CO
Clearance required: Secret, able to obtain TS/SCI

KBR

Principal Modeling & Simulation Software Engineer

Reston, VA, United States

On-site

Compensation range for Virginia is $170,000 to $195,000

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Job details

Pay: Compensation range for Virginia is $170,000 to $195,000
Workplace: On-site
Posting language: English
Posted: Nov 2, 2026

Original job description

Title:

Principal Modeling & Simulation Software Engineer At KBR, we deliver science, technology and engineering solutions to governments and companies around the world. KBR employs approximately 37,000 people worldwide with customers in more than 85 countries and operations in over 28 countries. KBR is proud to work with its customers across the globe to provide technology, value-added services, and long-term operations and maintenance services to ensure consistent delivery with predictable results.

Trinzic is the future independent company to be created through the planned spin-off of KBR's Mission Technology Solutions business, expected in January 2027. Our people work at the frontier of what is possible, delivering solutions in challenging environments and advancing some of the world's highest-priority national security and space missions.

Backed by decades of mission success, deep expertise, and trusted partnerships, Trinzic will launch as a global organization with more than 18,000 employees supporting customers around the world. Join us at a defining moment and help shape the future of a company built to tackle complex challenges and make a meaningful impact.

Candidates who join KBR's Mission Technology Solutions business before the spin-off will transition to Trinzic when the separation is complete and will not need to reapply for employment.

Key Responsibilities:

KBR is seeking a highly skilled and experienced Principal Modeling & Simulation Software Engineer to join a dynamic, high-performing, multidisciplinary team of military domain SMEs, modelers, and analysts located in Northern Virginia. This team leverages advanced modeling, simulation, and analysis (MS&A) tools such as SAFE-SiM to shape and inform Concept Exploration, Course of Action Analysis, and Operational Planning efforts for Department of War (DoW) stakeholders. The ideal candidate shall:

Design, develop, and maintain modeling primitives, behaviors, and reusable software components using AFSIM scripting languages, C#, Razor, and other applicable technologies.
Implement new model capabilities and enhancements that accurately represent operational systems, platforms, sensors, weapons, command-and-control functions, and other mission-relevant entities.
Develop model compositions and complex behaviors by integrating lower-level primitives into reusable simulation constructs.
Create and execute verification and validation test plans to ensure model functionality, performance, and fidelity prior to integration into the core simulation framework.
Identify, troubleshoot, and resolve software defects and model performance issues through structured testing and debugging.
Prepare technical documentation describing model design, implementation approaches, assumptions, limitations, and test results.
Collaborate closely with software engineers, integration teams, analysts, and subject matter experts to ensure models meet mission and technical requirements.
Support integration, regression testing, and configuration management activities associated with deployment into enterprise modeling and simulation environments.
Provide technical guidance and peer reviews to promote software quality, consistency, and adherence to development standards.

Work Environment:

Location: On-site
Travel Requirements: Minimal 0-20%, supporting strong work-life balance
Working Hours: Standard

Qualifications:

Required:

Bachelor of Science in Computer Science, Software Engineering, or other STEM field with 10+ years of relevant experience
4+ years of modeling, simulation, and analysis (MS&A) experience with one or more mission-level combat simulation frameworks such as AFSIM, NGTS, ITASE, SAFE-SiM, or similar environments
Demonstrated proficiency in object-oriented software development using C#, C++, Python, or comparable programming languages
Experience developing, modifying, testing, and debugging models, behaviors, or simulation components within AFSIM or similar modeling and simulation environments
Experience applying software engineering best practices including version control, structured testing, documentation, and configuration management
Active Top-Secret clearance with Sensitive Compartmented Information (SCI) eligibility
Demonstrated ability to work effectively in a small, high-performance team environment
Strong collaborative skills with experience working in expert-driven, multidisciplinary teams

Desired:

Master of Science in Computer Science, Software Engineering, or other STEM field with 12+ years of relevant experience
Experience developing or modifying Razor-based model components
Experience developing reusable software libraries, model primitives, behaviors, or simulation extensions for integration into larger modeling and simulation frameworks
Familiarity with MBSE techniques and tools, with the ability to translate operational concepts and behavioral models into executable simulation capabilities
Familiarity with automated testing, continuous integration, or software quality assurance processes within modeling and simulation environments
Experience with source control, software configuration management, automated build pipelines, and CI/CD tools such as Git, GitLab, Jenkins, DevOps, or similar platforms
Experience representing military systems, sensors, weapons, effects, or command-and-control processes in mission-level simulations
Scheduled Weekly Hours:40hrs
Basic Compensation:The offered rate will be based on the selected candidate’s knowledge, skills, abilities and/or experience and in consideration of internal parity.
Compensation range for Virginia is $170,000 to $195,000

Additional Compensation:

KBR may offer bonuses, commissions, or other forms of compensation to certain job titles or levels, per internal policy or contractual designation. Additional compensation may be in the form of sign on bonus, relocation benefits, short-term incentives, long-term incentives, or discretionary payments for exceptional performance. Ready to Make a Difference?If you’re excited about making a significant impact in the field of national defense and working on projects that matter, we encourage you to apply and join our team at KBR. Let's shape the future together.KBR BenefitsKBR offers a selection of competitive lifestyle benefits which could include 401K plan with company match, medical, dental, vision, life insurance, AD&D, flexible spending account, disability, paid time off, or flexible work schedule. We support career advancement through professional training and development.

Belong, Connect and Grow at KBR

At KBR, we are passionate about our people and our Zero Harm culture. These inform all that we do and are at the heart of our commitment to, and ongoing journey toward being a People First company. That commitment is central to our team of team’s philosophy and fosters an environment where everyone can Belong, Connect and Grow. We Deliver – Together.

KBR is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, disability, sex, sexual orientation, gender identity or expression, age, national origin, veteran status, genetic information, union status and/or beliefs, or any other characteristic protected by federal, state, or local law.

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More about this job

Skills

people@work
C#
Troubleshoot
Debugging
Computer science
Software development
C++
Python
Programming languages
Documentation
Software libraries
Test automation
CI/CD
Quality assurance methodologies
Git
GitLab
Jenkins
DevOps

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