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STR Logo STR · IT - Software Development

Lead Model-Based Systems Engineer

United States, Woburn 157000.00 - 224000.00 USD / Year · Job Posted January 11, 2026
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Job Description

STR is hiring a Lead Model-Based Systems Engineer (MBSE) in our Woburn, MA office to work across a broad portfolio of DoD mission areas. The Systems Engineer should have experience architecting systems, working across the Systems Engineering Lifecycle, a deep understanding of Systems Engineering principles, reverse engineering techniques, and the ability to work with complex software systems and the utilization of Digital Engineering/MBSE to accomplish program goals. The candidate will support STR’s Systems Development Division to achieve architectural integrity and traceability from requirements analysis through system and software development and production system deployment.

Job Responsibility

  • Utilize your Systems Engineering skillset as part of a tightly knit team to design, develop, implement, and deploy advanced software systems
  • Analyze, reverse-engineer, derive, and define requirements from ambiguous or incomplete software system implementations and codebases
  • Develop/generate documentation (e.g. Systems Requirements Document, SysML models) to capture requirements of new and existing systems
  • Perform gap analysis between derived requirements and current system capabilities to identify missing features or functionalities
  • Assist other technical contributors throughout the software lifecycle, from early prototypes to fully integrated systems
  • Implement MBSE approaches using SysML in Cameo
  • Work closely with domain experts and software development teams to realize program designs for a diverse set of applications, including: Distributed mission planning
  • Intelligence Surveillance Reconnaissance (ISR) management
  • Decision making support to human analysts/planners

Requirements

  • Active DoD Top Secret Clearance with SCI eligibility
  • U.S. citizenship
  • BS, MS or PhD in Systems Engineering, Computer Science, Aerospace Engineering, Electrical Engineering, or a related technical field
  • Experience implementing open architectures and integrating with large scale software-intensive systems and platform systems
  • Strong ability to derive requirements from existing software and capture new customer requirements, and translate those into development tasks for software teams
  • Comfortable working in dynamic environments and adjusting to changing priorities
  • Minimum of 8 years work experience as a Systems Engineer or related field
  • Minimum of 3 years experience architecting systems using system modeling tools (SysML in Cameo)

Nice to have

  • Domain expertise or familiarity with one or more of the following areas: Sea, air, and space platforms, mission planning, and C2 systems
  • Sensor Resource Management
  • Electronic Warfare
  • Software deployment in cloud-based systems
  • Government Open System Architectures (UCI, OMS, COARPS)
  • 5+ years of experience in architecting systems using system modeling tools (SysML in Cameo)
  • Experience porting models/designs from SparxEA to Cameo
  • Experience in Java, Python, or object-oriented programming languages
  • Agile software development experience and/or certification
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