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STR Logo STR · IT - Software Development

Principal Model-Based Systems Engineer

United States, Woburn 206000.00 - 284000.00 USD / Year · Job Posted January 18, 2026
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Job Description

STR is hiring a Principal Model-Based Systems Engineer (MBSE) to work across a broad portfolio of DoD mission areas. The Systems Engineer should have experience leading teams, architecting systems, working across the Systems Engineering Lifecycle, and have experience in Digital Engineering/MBSE. The candidate will support STR’s Systems Development Division in adopting processes and tools to achieve architectural integrity and traceability from requirements analysis through system and software development through production system deployment.

Job Responsibility

  • Leading development programs through the Systems Engineering process using MBSE approaches that support DoD Digital Engineering goals
  • Leading teams and implementing rigorous MBSE approaches using SysML in Cameo (MagicDraw)
  • Providing mentorship and training of Systems Engineers on the use of MBSE
  • Working closely with domain experts and software development teams to realize program designs and digital engineering goals

Requirements

  • Active DoD Secret Clearance with ability to obtain Top Secret Security Clearance
  • U.S. citizenship needed by U.S. Government
  • BS, MS or PhD in Systems Engineering, Aerospace Engineering, or related technical field
  • Technical Project Lead experience
  • Minimum of 10 years work experience as a Systems Engineer or related field
  • Minimum of 5 years experience working with SysML models in Cameo (or similar tool)
  • Experience working with software-intensive systems and open architecture

Nice to have

  • Active Top Secret Security Clearance
  • 10+ years’ experience in architecting systems using system modeling tools
  • Domain expertise in Radar, Electronic Warfare, Acoustic, Antenna Apertures, Sensor Resource Management, Sea/Air/Space, Large-Scale Platform Test Systems, Cyber Physical Systems, Open System Architectures (UCI, OMS, COARPS)
  • Proficiency in Java, C/C++ or Python
  • Agile software development experience
  • Familiarity with specific government open architectures (e.g., Open Mission Systems)
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