KBR’s Mission Engineering Division delivers complex technical solutions and expert support to the U.S. Department of War, specializing in modeling and simulation, cyber transformation, air vehicle mission integration, and lifecycle support. As a trusted partner with a proven history in mission technology, KBR collaborates closely with clients to develop innovative and effective solutions. With a strong ethical framework, KBR prioritizes data security, privacy, and responsible information management to ensure mission success. 

Our Carlsbad, CA team is seeking a Mid-Level Model-Based Systems Engineer (MBSE) to support a classified all-domain mission system development program for the Department of War. In this role, you will develop system and mission-level models that inform capability design, integration, and verification across a complex engineering environment. You will collaborate with multi-disciplinary engineering teams to perform trade studies, mature architectures, and maintain model traceability from requirements to verification activities. Work is conducted onsite in a classified facility, where modeling rigor, analytical depth, and configuration discipline are essential.   

Roles & Responsibilities: 

• Develop descriptive system, mission, and architecture models using SysML and MBSE best practices. 
• Integrate MBSE tools to perform trade studies, analysis of alternatives (AoA), and system performance assessments. 
• Establish and maintain full traceability between requirements, design elements, risks, schedules, and verification artifacts. 
• Track measures of effectiveness (MOEs) and technical performance measures (TPMs) to inform engineering decisions. 
• Collaborate with cross‑functional engineering teams to mature system architectures and support design reviews. 
• Maintain model baselines, configuration integrity, and quality using collaborative model repositories and version control tools. 
• Support the development of executable models, simulations, and analytical workflows that inform system behavior.
• Prepare and present model products, findings, and technical insights to review boards and stakeholders. 

Basic Qualifications 

• Clearance & Citizenship: Must be a US Citizen with a current TS/SCI. An active and transferable U.S. government-issued DODTS/SCI with the ability to obtain Special Access security clearance is required prior to the start date.  
• Education: Bachelor’s degree in engineering, computer science, mathematics, or related technical discipline. 
• Experience: Minimum 5 years of experience in Model-Based Systems Engineering. 
• Technical Expertise: Experience with the NoMagic/Cameo suite (Cameo Systems Modeler, Teamwork Cloud, and Cameo Collaborator). Proficiency in SysML, system modeling methodologies, and object‑oriented analysis/design. 

Preferred Qualifications 

• Familiarity with analytical/simulation tools (e.g., MATLAB, STK, Modelica, SciPy/SciKit‑Learn) to inform model‑driven trade space exploration.
• Experience developing executable system models (e.g., OMG‑CSMP certification or equivalent knowledge). 
• Programming experience in Python, Java, or JavaScript for model automation and analysis. 
• Experience working in Agile engineering environments supporting Department of War or Intelligence Community (IC) programs. 
• Experience with UAF or DoDAF architecture frameworks. 

Work Location: Ability to work full‑time in a classified Carlsbad, CA facility. 

Additional Clearance Note: Active and transferable U.S. government-issued DODTS/SCI with the ability to obtain Special Access security clearance is required prior to start date. U.S. citizenship is required.  

Scheduled Weekly Hours: 40 hours/week 

Basic Compensation: $115,000-$173,580. The salary range posted is based on the national average. The offered rate will be based on the selected candidate’s location, knowledge, skills, abilities, and/or experience, contract affordability, and in consideration of internal parity. 

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. 

Benefits: KBR offers a selection of competitive lifestyle benefits which could include a 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.