Jobs in the United States

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Added 4 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 13 mins ago
Senior Engineer - Structural - Mi-Tech Services, Inc.
Michels Corporation
Milwaukee, WI · 180 W Ostend St Baltimore, MD · Renton, WA
In your role as a senior structural engineer at Mi-Tech, you’ll design a wide variety of temporary and permanent structures associated with the construction of utility, infrastructure and…
Added 13 mins ago
Senior Engineer - Structural - Mi-Tech Services, Inc.
Michels Corporation
Baltimore, MD · 180 W Ostend St Baltimore, MD · Renton, WA
In your role as a senior structural engineer at Mi-Tech, you’ll design a wide variety of temporary and permanent structures associated with the construction of utility, infrastructure and…
Added 13 mins ago
Senior Engineer - Structural - Mi-Tech Services, Inc.
Michels Corporation
Renton, WA · 180 W Ostend St Baltimore, MD
In your role as a senior structural engineer at Mi-Tech, you’ll design a wide variety of temporary and permanent structures associated with the construction of utility, infrastructure and…
Added 17 mins ago
Java Full Stack Software Engineer - Mid Level
United Services Automobile Asn
United States
As a dedicated Java Full Stack Software Engineer - Mid Level, you will join a dynamic, startup-minded team within the Investment Experience Technology organization at USAA, part of the…
Added 29 mins ago
R
Principal DevOps Software Engineer
RapidAI
Remote, United States
- $175,000 to $240,000 USD / year
Leverage AI coding tools (e.g., Claude Code, Codex, Copilot) to design, build, and operate infrastructure and automation, review PRs, troubleshoot systems, enhance deployments and support…
Added 31 mins ago
Principal Windows- Linux Systems Administrator- Will sponsor a clearance
RTX
United States
·Serve as a Principal Systems Administrator will be supporting Windows and Linux enterprise environments, responsible for the design, implementation, maintenance, patching, and…
Added 33 mins ago
Principal Biomedical Engineer
USA-Medtronic MiniMed, Inc 1017
Northridge, CA
MiniMed is seeking an experienced Principal Engineer to join our Continuous Glucose Monitoring (CGM) Sensor R&D team. This role will provide technical leadership in the design, development,…
Added 34 mins ago
Principal GPS Subsystems Engineer
RTX
United States
The Guidance Electronics Team is searching for a Principal GPS Subsystems Engineer with experience in GPS technology. The role of the GPS Subsystems Engineer is to provide GPS electronics…
Added 34 mins ago
Principal Test and Validation Engineer
RTX
United States
The Production Test Engineer is responsible for developing, implementing, and sustaining automated and manual production test solutions for Surface Acoustic Wave (SAW) filter products used…
Added 39 mins ago
Principal Engineer
NextEra Energy
Juno Beach, FL
The Principal Controls Engineer will provide technical leadership for the design, development, testing, and commissioning of complex control and automation systems. This role will lead…
Added 41 mins 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 41 mins 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 41 mins 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 41 mins ago
Supplier Management Team Lead 3
CORP-Corporate Office
Remote, United States
Northrop Grumman Mission Systems is a trusted provider of mission-enabling solutions for global security. We have a wide portfolio of secure, affordable, integrated, and multi-domain…
Added 41 mins ago
Principal or Sr. Principal Mechanical Engineer
CORP-Corporate Office
United States
The Naval & Oceanic Systems business unit headquartered in Annapolis, MD is seeking dependable individuals willing to work in a collaborative environment and that are interested in…
Added 41 mins ago
Sr. Principal Electronics Engineer
CORP-Corporate Office
United States
Northrop Grumman Mission Systems is seeking a Sr. Principal Electronics Engineer. The selected candidate will report to the Northrop Grumman site in Apopka, FL
Added 41 mins 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 41 mins ago
Sentinel - Systems Engineer - Support Systems Integration
CORP-Corporate Office
United States
…other Friday off. This position may be hired at the System Engineer or Principal Systems Engineer levels depending upon applicant…
Added 41 mins ago
Sentinel - Principal Systems Engineer - Support Systems Integration
CORP-Corporate Office
United States
Northrop Grumman Defense Systems is seeking to hire a Principal Systems Engineer – Support Systems Integration (Level 3) to join its team. This position is in Roy, UT or Colorado Springs,…
Added 41 mins ago
Sentinel - Principal Systems Engineer - Support Systems Integration
CORP-Corporate Office
United States
Northrop Grumman Defense Systems is seeking to hire a Principal Systems Engineer – Support Systems Integration (Level 3) to join its team. This position is in Roy, UT in support of the…
Added 41 mins 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 41 mins 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 47 mins ago
Principal Applications Engineer
SiTime Corporation
AZ
…decades, quartz devices, non-silicon technology, have kept systems in sync, but they struggle in harsher, more demanding environments. MEMS-based Precision Timing delivers greater accuracy,…
Added 48 mins ago
Principal Algorithm & Signal Processing Engineer
STR
Arlington, VA · Dayton, OH · Woburn, MA
…transition from advanced research into operational prototype systems. While this position is ideally suited for a Principal Engineer, applicants whose qualifications closely align with the…

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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