Jobs in the United States

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Added 4 mins ago
Senior Principal Engineer
Autodesk
CA · San Francisco, CA · ON, CA · San Francisco
GET Engineering is seeking an experienced Senior Principal Engineer – AI and Engineering Excellence to lead the technical strategy and evolution of our cloud platform, developer experience,…
Added 5 mins ago
Electrical Engineer - Contract and Direct
Kiewit
Dallas, TX · Fort Worth, TX · Houston, TX
…ambitious industrial and infrastructure projects running. Here, engineering isn’t theoretical - it’s built. You’ll design systems that must perform in the real world, collaborate directly…
Added 5 mins ago
Principal Design Verification Engineer (Silicon Engineering)
SpaceX
Austin, TX
We are seeking a motivated, proactive, and intellectually curious engineer who will work alongside world-class cross-disciplinary teams (systems, firmware, architecture, design, validation,…
Added 6 mins ago
Sr Principal Software Engineer
Cadence Design Systems, Inc.
Austin, TX
We are seeking a Software Engineer to develop AI models for electrothermal, electromagnetic, and structural simulations. This role combines research in deep learning with practical product…
Added 6 mins ago
2027 Summer Internship: Advanced Manufacturing Engineer
Paccar Winch Inc.
Denton, TX
2027 Summer Internship: Advanced Manufacturing Engineer Apply now »
Added 13 mins ago
WW
Principal MEP Advisor & Design Authority
World Wide Technology Holding, LLC
Remote, United States
- $220,000 to $270,000 USD / year
Experience qualifying and overseeing trade partners (MEP subcontractors, engineering firms, commissioning agents), and advising senior stakeholders in a consulting, advisory,…
Added 24 mins ago
O
Principal Platform Software Engineer
Oracle
Nashville, TN
- $104,500 to $234,600 USD / year
As a Principal Software Developer, you will provide technical leadership in designing and building a scalable, highly available, and reliable artifact management system for OCI. You will…
Added 31 mins ago
Principal Engineer
Thomson Reuters Holdings Inc.
Frisco, TX · NY · Ann Arbor, MI · Eagan, MN
As Principal Engineer for Corporate Tax and Trade, you'll define and execute the technical vision for our generative AI products, ensuring we deliver powerful, user-friendly, and innovative…
Added 31 mins ago
Principal Engineer
Thomson Reuters Holdings Inc.
Frisco, TX · NY · Ann Arbor, MI · Eagan, MN
As Principal Engineer for Corporate Tax and Trade, you'll define and execute the technical vision for our generative AI products, ensuring we deliver powerful, user-friendly, and innovative…
Added 47 mins ago
Senior/Principal Systems Modeling & Simulation Engineer
KBR Wyle Services, LLC
Greenbelt, MD
KBR is seeking a Senior/Principal Systems Modeling & Simulation/Systems Engineer to join the Structural Engineering and Analysis team supporting NASA Goddard Space Flight Center Programs.…
Added 49 mins ago
R
Principal DevOps Software Engineer
RapidAI
Remote, United States
- $175,000 to $240,000 USD / year
We are looking for a DevOps Engineer to be at the forefront of medical device software development to help deliver the best patient care around the world.
Added 51 mins ago
Principal Windows- Linux Systems Administrator- Will sponsor a clearance
RTX
United States
·Engineer and sustain enterprise imaging, deployment, and automation solutions, including MECM/SCCM, PXE, Windows imaging, in-place OS upgrades, and scripted software deployment using…
Added 54 mins ago
Principal Test and Validation Engineer
RTX
United States
Raytheon brings the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. We deliver…
Added 1 hour ago
Sentinel Sr Principal Software Engineer - 20459
CORP-Corporate Office
United States
Northrop Grumman Defense Systems would like you to join our team as a Sr Principal Software Engineer. This position will be located in Roy, UT and will support the Sentinel Program.…
Added 1 hour ago
Test Engineer / Principal Test Engineer - 20671
CORP-Corporate Office
United States
Northrop Grumman Strategic Deterrent Systems division is seeking a Test Engineer / Principal Test Engineer to join our team of highly qualified and diverse individuals. This position will…
Added 1 hour ago
Principal Engineer Systems Architect
DS - MP - ABL - Rocket Center
United States
Northrop Grumman Defense Systems is seeking a Principal Systems Engineer Architect to work at our Missile Products Division in Plymouth, MN. The ideal candidate will have leadership…
Added 1 hour ago
Sr Principal Engineer Systems
DS - MP - ABL - Rocket Center
United States
Northrop Grumman’s Armament Systems Business Unit is looking for a Systems Engineer to join the Specialty Engineering team in Plymouth, MN. The Specialty Engineering team supports munition,…
Added 1 hour ago
Principal / Sr Principal Engineer Systems Modeling Simulation
CORP-Corporate Office
United States
Northrop Grumman Aerospace Systems has an opening for a Senior Principal or Principal Engineer Systems Modeling and Simulation, to join our team of qualified, diverse individuals. This…
Added 1 hour ago
Principal Mechanical Engineer, Genset
Mitsubishi Heavy Industries, Ltd.
Plano, TX
The Principal Mechanical Engineer, Genset, serves as the U.S. technical lead for designing, integrating, and executing gas engine-based power generation systems that support data center and…
Added 1 hour ago
Principal Networking and Virtualization Systems Engineer Specialist - Onsite
Collins Aerospace
Seminole, FL
Support efforts with cross-functional team members (hardware and software engineers) to ensure system compatibility and performance
Added 1 hour ago
Principal Manufacturing Engineer (Onsite)
Collins Aerospace
Hollywood, FL
Collins Aerospace, an RTX company, is seeking a Principal Manufacturing Engineer to join our Customer Service Engineering team at our based in Miramar, FL. In this hands-on engineering…
Added 1 hour ago
Senior Information Assurance Engineer
Agile IT Synergy
Tampa, FL
The successful candidate for the Information Systems Security Engineer is responsible for defining, implementing and maintaining information security policies, strategies, procedures and…
Added 1 hour ago
BH
Principal Analytics Engineer
BEHAVIORAL HEALTH PRACTICE SERVICES LLC.
Remote, United States
- $160,000 to $175,000 USD / year
We are looking for an experienced Principal Analytics Engineer to provide technical leadership for Enterprise Analytics. Reporting directly to the VP of Analytics and Insights, this senior…
Added 1 hour ago
P
Senior Advanced Manufacturing Project Engineer
PACCAR
Kirkland, WA
- $119,100 to $186,300 USD / year
B.S. in Mechanical, Industrial, Electrical, or Software Engineering or a related field.
Added 1 hour ago
Senior/Staff/Principal Optical Engineer - Visualization Systems
Horizon Surgical Systems, Inc.
Los Angeles, CA
Open Position – Senior/Staff/Principal Optical Engineer - Visualization Systems

Trinzic

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 KBRAt 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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