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DevSecOps Engineer & MBSE Modeler

System One | Rockville, United States | Posted June 02, 2026

Position Overview

DevSecOps Engineer & MBSE
Compensation: $140,000 - 150,000
Security Clearance: Secret clearance required to start
Must be able to obtain Top Secret
Location: Rockville, MD with occasional travel locally (Aberdeen Proving Ground, Pentagon, CARDEROCK)

We are seeking a highly skilled DevSecOps Engineer with expertise in Model-Based Systems Engineering (MBSE) to support the design, development, integration, and security of complex systems. This role bridges software delivery, cybersecurity, and systems engineering, ensuring secure and efficient system lifecycle management through modern DevSecOps practices and MBSE methodologies.

The ideal candidate will have 7–8+ years of post-graduate experience in a STEM field, with a strong foundation in systems modeling, automation, secure software pipelines, and defense-focused environments. Prior U.S. Army experience is highly preferred, especially in operational, engineering, or acquisition roles.

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