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STR

Defense, intelligence, homeland security R&D contractor

Lead Model-Based Systems Engineer

Engineering ManagementConfirmed live in the last 24 hours
Full-timeArlington County, Arlington, VA, USA$157k - $224k

About the Job

Requirements

  • A Bachelor of Science, Master of Science, 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.
  • Ability to derive requirements from existing software, capture new customer requirements, and translate them into development tasks for software teams.
  • A minimum of 8 years of work experience as a Systems Engineer or in a related field.
  • A minimum of 3 years of experience architecting systems using system modeling tools, specifically SysML in Cameo.
  • An active Department of Defense Top Secret clearance with Sensitive Compartmented Information eligibility; U.S. citizenship is required by the U.S. Government.

Responsibilities

  • Use systems engineering skills as part of a 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 or generate documentation, such as Systems Requirements Documents and 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 model-based systems engineering approaches using SysML in Cameo.
  • Work closely with domain experts and software development teams to realize program designs for applications including distributed mission planning, Intelligence Surveillance Reconnaissance management, and decision-making support for human analysts and planners.

Desired Qualifications

  • Domain expertise or familiarity with sea, air, and space platforms, mission planning, and command and control systems.
  • Domain expertise or familiarity with Sensor Resource Management.
  • Domain expertise or familiarity with Electronic Warfare.
  • Domain expertise or familiarity with software deployment in cloud-based systems.
  • Domain expertise or familiarity with Government Open System Architectures, including UCI, OMS, and COARPS.
  • At least 5 years of experience architecting systems using system modeling tools, specifically SysML in Cameo.
  • Experience porting models or designs from SparxEA to Cameo.
  • Experience in Java, Python, or object-oriented programming languages.
  • Agile software development experience and/or certification.

About the Company

STR

Defense, intelligence, homeland security R&D contractor

STR is an employee-owned technology firm serving national security agencies with R&D, software development, and integration under large federal contracts. Its three core areas are Analytics & C2, Cybersecurity, and Sensors, delivering AI-driven decision support, digital twins of embedded systems, and software-defined RF/acoustic hardware for multi-domain operations. Notable projects include DARPA's JAWS, AI for swarming drones, and sonar spoofing DSP, showing deep defense-domain focus. Its goal is to provide deployable technologies that enhance joint all-domain operations and situational awareness, while exploring commercial uses like automated medical imaging.

Company size
1,001-5,000
Company stage
N/A
Total funding
$283M
Headquarters
Woburn, MA
Founded
2010

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