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Added 9 mins ago
Senior Engineer - Robotics and Autonomous Systems - Vernova Research
GE Vernova
Niskayuna, NY
The Senior Engineer – Robotics & Autonomous Systems is a senior technical contributor within the Robotics & Computer Vision team at GE Vernova Advanced Research. This role develops advanced…
Added 36 mins ago
J
Sr. QA/Test Automation Engineer
Jobot
Gaithersburg, MD
- $140,000 to $175,000 USD / year
Senior QA / Test Automation Engineer – Senior, Lead & Principal Levels
Added 36 mins ago
J
Software Engineer (JAVA)
Jobot
Gaithersburg, MD
- $140,000 to $175,000 USD / year
Software Engineer – Senior, Lead & Principal Levels
Added 56 mins ago
Principal Electrical Device Design Engineer - Indianola, PA
Bayer
Indianola, PA
Familiarity with equipment, test methods, and best practices applicable to the verification and validation of electrical product designs, including oscilloscopes, spectrum analyzers, logic…
Added 1 hour ago
Principal Electrical Device Design Engineer - Indianola, PA
Bayer
Indianola
Familiarity with equipment, test methods, and best practices applicable to the verification and validation of electrical product designs, including oscilloscopes, spectrum analyzers, logic…
Added 1 hour ago
Principal Systems Engineer
Aerospace
Phoenix, AZ
As the Principal Systems Engineer, you will guide a team responsible for the requirements-based engineering of APU control system functions and components. While providing direction and…
Added 1 hour ago
Principal System Tests & Diagnostics Engineer
Graphcore
Austin, TX
We are seeking a highly skilled Principal System Tests & Diagnostics Engineer to develop, extend, and integrate specialized silicon validation and diagnostics tools for next-generation AI…
Added 2 hours 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 2 hours ago
Principal AI Security Engineer
Kyndryl, Inc.
Remote, United States
Kyndryl is seeking a Principal AI Security Engineer to secure internal AI solutions, agents, copilots, model platforms, and frontier AI capabilities. This hands-on senior technical role…
Added 2 hours ago
Engineer Senior Principal II - New Business Space Vehicle Architect
BAE Systems
Broomfield, CO · Boulder, CO
Provide leadership to the system engineering staff generating engineering documents including specifications, interface control documents, test plans, and prioritization.
Added 3 hours ago
PI
Sr. Associate - Solutions Engineer
Pfizer Inc
NY · PA
- $79,400 to $132,400 USD / year
The Senior Associate, Solutions Software Engineer is a hands-on individual contributor who designs, builds, integrates, and supports digital solutions using approved enterprise platforms,…
Added 3 hours ago
Principal Wireless/RF Engineer
Aerospace
San Jose, CA · Colorado Springs, CO
We're looking for an experienced and highly skilled Principal RF Design Engineer to join our thriving team in San Jose. In this pivotal role, you will provide leadership and direction in…
Added 3 hours ago
Senior Principal Systems Engineer II - Systems Architect
BAE Systems
Fort Wayne, IN
BAE Systems wants your Systems Engineering talent to perform system design activities such as developing and managing system, hardware and software requirements, developing system…
Added 4 hours ago
O
Principal Network Development Engineer
Oracle
Nashville, TN
- $102,300 to $209,500 USD / year
As a Principal Network Development Engineer, you will help lead the migration of Federal customers to Oracle Cloud Infrastructure (OCI). This role requires deep network architecture…
Added 4 hours ago
INGENYX - Quality Engineer 3 (Hybrid)
Teleflex
Trenton, GA
Validation concepts and techniques (process, equipment, and test methods)
Added 4 hours ago
A
Principal Electrical Design Engineer
Actalent
Prince George, VA
- $60.62 to $109.13 USD / hour
Job Title: Principal Electrical Design EngineerJob DescriptionThe Principal Electrical Design Engineer leads and advises design teams on highly complex and unique embedded hardware projects…
Added 6 hours ago
Senior Principal Engineer – Ground/Application Software Integration
BAE Systems
Broomfield, CO · Westminster, CO · Boulder, CO
Job Description The Software and Ground Solutions group at BAE Systems Aerospace & Mission Systems (AMS) is looking to expand our team with a talented and energetic software engineer…
Added 16 hours ago
Principal Systems Engineer - Processing, Guidance, & Controls Engineers t
RTX Corporation
tucson, AZ
The PG&C Center in Tucson, AZ are currently hiring Principal Systems Engineer - Processing, Guidance, & Controls Engineers to support the execution of our current and upcoming product…
Added 22 hours ago
Principal Open-Source Networking Architect
NVIDIA Corporation
North District, IL
Lead the work with R&D and Validation teams, providing technical guidelines and close support and thorough reviews for detailed designs and test plans.
Added 1 day ago
Sentinel - Systems / Principal Systems Safety Engineer
Northrop Grumman
Huntsville, AL
The Sentinel program has an exciting opportunity for a Systems/ Principal Systems Safety Engineer to join the team supporting activities including use case development, requirements…
Added 1 day ago
EG
Dev Lead
Eliassen Group
Pierre, SD
- $110 to $120 USD / hour
2+ years as a senior or principal engineer with design, implementation, and operational ownership.
Added 1 day ago
NS
Principal Digital Design Engineer
NAVITAS SEMICONDUCTOR USA, INC.
Torrance, CA
- $170,000 to $190,000 USD / year
We are seeking a Principal Digital Design Engineer to join our fast-growing, collaborative team. The ideal candidate is self-motivated, energetic, and able to thrive in a high-growth,…
Added 1 day ago
EG
Dev Lead
Eliassen Group
Phoenix, AZ
- $110 to $120 USD / hour
2+ years as a senior or principal engineer with design, implementation, and operational ownership.
Added 1 day ago
EG
Dev Lead
Eliassen Group
Jackson, MS
- $110 to $120 USD / hour
2+ years as a senior or principal engineer with design, implementation, and operational ownership.
Added 1 day ago
EG
Dev Lead
Eliassen Group
Boston, MA
- $110 to $120 USD / hour
2+ years as a senior or principal engineer with design, implementation, and operational ownership.

Closed listing

KBR

Principal Modeling & Simulation Software Engineer

Reston, VA, United States

On-site

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

This opening has closed.

The original listing is kept below for reference.

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About employer

Job details

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

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Original job description

Archived listing. The details below describe a past opening.

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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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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