> Markdown version of [/jobs/ext/1569398-principal-mbse-systems-engineer](https://www.wearedevelopers.com/jobs/ext/1569398-principal-mbse-systems-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal MBSE Systems Engineer - **Company:** Science Applications International Corporation - **Location:** Chantilly, VA, United States - **Experience:** Expert - **Salary:** $160,001.0 - $200,000.0 - **Contract:** Permanent contract - **Skills:** Agile Methodology, Systems Engineering, Confluence, JIRA, Cloud Computing, Network Interface Controllers, Scrum Methodology, Release Management, Rhapsody, Software Requirements Analysis, Data Streaming, Systems Modeling Language, Systems Architecture, Management of Software Versions, Jama (Software), Model-Driven Development, Model Validation, Git, Atlassian Tools, DODAF, Software Version Control, Devsecops - **Published:** July 7, 2026 - **Apply:** https://www.careerarc.com/job-listing/saic-jobs-principal-mbse-systems-engineer-52827590 ## About the Role TS/SCI and US citizenship. * Bachelor's and 10+ years of experience; OR Master's and 8+ years; OR PhD/JD and 6+ years. * 10+ years systems engineering on complex defense/space/C3BM programs, including 5+ years hands on MBSE with Cameo (or Sparx EA/Rhapsody). * Proficiency in SysML and architecture frameworks (DoDAF/UPDM/UAF); experience with requirements tools (e.g., DOORS JAMA) and Atlassian (Jira/Confluence). * Proven ability to perform trade studies, interface control, risk analysis, and to translate model outputs into actionable technical direction. * Strong communication skills for technical writing, model curation, and stakeholder briefings; collaborative working style across multidisciplinary teams. Desired Qualifications: * Familiarity with SIP/CCB workflows, external interface modeling (e.g., UCI), and automated model validation/scripting. * INCOSE ASEP/CSEP certification; SAFe or Scrum credentials. * Experience with Git based version control; exposure to DevSecOps aligned digital engineering toolchains. Target salary range: $160,001 - $200,000. The estimate displayed represents the typical salary range for this position based on experience and other factors. ## Description Description We are seeking a Systems Engineer - Modeler to lead MBSE driven architecture, requirements, and interface modeling for CMCC. You will develop and maintain system models (ensure endtoend traceability, and support SIPaligned onboarding and integration, working closely with the Chief Engineer, System Architect, Integrator, Release Manager, and Government stakeholders to keep the technical baseline accurate, testable, and mission ready. Job Responsibilities: * Apply systems engineering best practices across the lifecycle: concept, requirements, design, integration, V&V, deployment, and disposal. * Develop and maintain MBSE models (SysML; DoDAF/UPDM/UAF) in Cameo Systems Modeler / Teamwork Cloud to capture architecture, behavior, data flows, and interfaces. * Lead requirements definition/decomposition; maintain bidirectional traceability across requirements, architecture, test artifacts, and Agile backlog items. * Conduct trade studies, AoAs, and risk assessments; define/manage system interfaces to ensure interoperability across CMCC components and externals. * Support SIP aligned capability onboarding, CCB decisions, and model updates for Factory, I&T, Experimental, and Operational environments. * Collaborate with software, hardware, cyber, and test teams to drive cohesive system design; prepare and present model based documentation and briefings. * Manage model repositories, versioning, and configuration in TWC; generate model artifacts (OVs, UAF views, sequence diagrams, operational threads). * Contribute to Agile/ART activities (PI Planning, demos, retrospectives), highlight dependencies, and recommend model driven improvements to flow efficiency and velocity. * Partner with program management to align technical solutions with schedule/budget; identify process improvements that elevate MBSE discipline across the program. Qualifications TS/SCI and US citizenship. * Bachelor's and 10+ years of experience; OR Master's and 8+ years; OR PhD/JD and 6+ years. * 10+ years systems engineering on complex defense/space/C3BM programs, including 5+ years hands on MBSE with Cameo (or Sparx EA/Rhapsody). * Proficiency in SysML and architecture frameworks (DoDAF/UPDM/UAF); experience with requirements tools (e.g., DOORS JAMA) and Atlassian (Jira/Confluence). * Proven ability to perform trade studies, interface control, risk analysis, and to translate model outputs into actionable technical direction. * Strong communication skills for technical writing, model curation, and stakeholder briefings; collaborative working style across multidisciplinary teams. Desired Qualifications: * Familiarity with SIP/CCB workflows, external interface modeling (e.g., UCI), and automated model validation/scripting. * INCOSE ASEP/CSEP certification; SAFe or Scrum credentials. * Experience with Git based version control; exposure to DevSecOps aligned digital engineering toolchains. Target salary range: $160,001 - $200,000. The estimate displayed represents the typical salary range for this position based on experience and other factors. ## Related Videos - [Improving quality with Agentic AI with Rovo Dev and Xray](https://www.wearedevelopers.com/videos/2005-improving-quality-with-agentic-ai-with-rovo-dev-and-xray) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Model Based Systems Engineering in an Agile Product Development Process](https://www.wearedevelopers.com/videos/68-model-based-systems-engineering-in-an-agile-product-development-process) - [Collaboration Quantified: Lessons from Open Source Developer Networks](https://www.wearedevelopers.com/videos/1422-collaboration-quantified-lessons-from-open-source-developer-networks) - [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews) - [One Pipeline, Three Regulator - SBOM Compliance for the Developer](https://www.wearedevelopers.com/videos/100169-one-pipeline-three-regulator-sbom-compliance-for-the-developer) ## Related Articles - [How Much Does a Software Engineer Make? Realistic Software Engineering Salaries](https://www.wearedevelopers.com/magazine/425-how-much-does-a-software-engineer-make-realistic-software-engineering-salaries) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Software Engineer Career: Things You Should Know](https://www.wearedevelopers.com/magazine/143-software-engineer-career-things-you-should-know) - [Data Engineer Salary UK](https://www.wearedevelopers.com/magazine/253-data-engineer-salary-uk) - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london)