Jobs in the United States

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Added 1 min ago
O
Lead Principal Application Software Engineer- Forward Deployed Engineer
Oracle
Madison, WI
- $104,600 to $264,100 USD / year
Oracle Customer Success Services (CSS) is seeking a Senior Principal Forward Deployed Engineer to lead the delivery of strategic AI and data transformation programs for Oracle's largest…
Added 12 mins ago
Principal RF Engineer
CACI
Springfield, VA · Springfield
CACI is hiring a Principal Electrical Engineer that will Leads project teams deployed worldwide to install, maintain and upgrade complex electronic mission systems, security systems and…
Added 15 mins ago
Consultant, Data Engineer
Nationwide Life and Annuity Insurance Co
OH
Data Engineer needed to design, implement, maintain, and support ETL, data warehousing, and enterprise data-integration workflows across relational databases, file systems, and service…
Added 15 mins ago
Consultant, Data Engineer
Nationwide Life and Annuity Insurance Co
OH
Software Engineer needed to design, develop, test, and implement scalable ETL/ELT data integration pipelines to acquire and centralize diverse, high-volume datasets from multiple source…
Added 17 mins ago
FT
Principal Quant Developer
Fidelity Technology Group, LLC
Boston, MA
- $107,000 to $216,000 USD / year
…Technology group is seeking a highly motivated and curious Principal Quantitative Developer. In this role you will contribute to a dynamic and fast-paced development team supporting…
Added 22 mins 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 28 mins ago
Principal RF Engineer
CACI, INC.-FEDERAL
Springfield, VA
CACI is hiring a Principal Electrical Engineer that will Leads project teams deployed worldwide to install, maintain and upgrade complex electronic mission systems, security systems and…
Added 29 mins ago
Process Chemistry Supervisor
Amentum
Richland, WA
Monitor group and individual engineer performance and ensure appropriate communication to management is provided
Added 37 mins ago
XE
Distribution and Gas Planning Engineer (Staff, Senior, or Principal)
Xcel Energy
Minneapolis, MN
- $81,000 to $156,600 USD / year
The job summary below and responsibilities reflect the staff engineer level role . The successfully chosen candidate will be placed at a level that is commensurate with their skills and…
Added 39 mins ago
Principal Systems Engineer - Compute Platform Integration
Torc Robotics
Ann Arbor, MI
We are looking for a seasoned Principal Systems Engineer who can provide deep technical leadership across the full stack of compute and electrical integration - spanning hardware…
Added 40 mins 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 41 mins ago
Senior Principal Systems Engineer II - Systems Architect
BAE Systems
Fort Wayne, IN
Job Description Senior Principal Systems Engineer II - Systems Architect
Added 1 hour ago
Principal Digital Design Engineer
Astera Labs
San Jose, CA · CA
We are looking for Principal Digital Design Engineers with experience developing micro-architecture and implementation of the front-end circuit design, including RTL, synthesis, IP…
Added 1 hour ago
Principal Network Development Engineer
Oracle
Nashville, TN
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 1 hour ago
Engineer, III, Sr/Principal
Southern Company
Naperville, IL
Opportunities at multiple levels: This position may be filled as Engineering III (Level 5), Senior Engineer (Level 6), or Principal Engineer (Level 7). Candidates who demonstrate advanced…
Added 1 hour ago
Senior Project Manager
Savannah River National Laboratory
Aiken, SC
…for capital asset projects from project initiation through design, construction, commissioning, turnover, and closeout. The position is accountable for integrating technical, cost,…
Added 1 hour ago
Principal Software Engineer
LEI LAZEL, Inc.
Remote, United States
ExploreK12 Literacy is looking for a Principal Software Engineer who combines deep technical expertise, strong engineering judgment, and hands-on execution.
Added 1 hour ago
Sr. Software Engineer
Neumo Holdings LLC
Decorah, IA · VA · IL · CA · AL
…meets customers where they are. Positioned between the Software Engineer and Staff Engineer roles, the Senior Software Engineer owns features from design through production and makes sound…
Added 1 hour ago
Senior Principal Reliability Engineer
BAE Systems
Merrimack, NH
We are seeking a motivated and detail-oriented Reliability Engineer to join our dynamic C4ISR (Command, Control, Communications, Computers, Intelligence, Surveillance, and Reconnaissance)…
Added 1 hour ago
Senior Principal Systems Engineer
BAE Systems
Nashua, NH
…involve developing new EA capabilities for application in EW systems and performing systems engineering functions such as developing and managing systems level requirements, developing…
Added 1 hour ago
Principal Power Electronics Eng (onsite)
York International Corp.
United States
Power Electronics Principal Engineer - New Freedom, PA
Added 2 hours ago
Senior AI Engineer (Automation)
Redwood Logistics
Remote, United States
Redwood Logistics is seeking a Senior AI Engineer to design, build, and deploy intelligent automation systems that transform how we operate. This role sits at the intersection of AI…
Added 2 hours ago
Senior/Principal R&D Systems Electrical Engineer - Nuclear Deterrence Systems, NM/CA, Onsite
Sandia National Laboratories
Livermore, CA
…national security work in support of nuclear deterrence, advanced systems engineering, electrical design, product realization, testing, qualification, assessment, and…
Added 2 hours ago
Principal Solutions Architect, Streaming & AdTech-Xumo
Comcast
Irvine, CA
Lead architecture and design for large-scale, multi-team initiatives across backend systems, CMS platforms, video workflows, and advertising systems.
Added 2 hours ago
Guidance Navigation and Control Engineer Level 2 or 3
Northrop Grumman
San Diego, CA
Northrop Grumman Aeronautics Systems seeks an Engineer or Principal Engineer, Guidance, Navigation, and Control (GNC), to support the Core Vehicle Management System (CoreVMS) team in San…

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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