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Lead System Architect

Listing for: Modern Technology Solutions Inc
Full Time position Listed on 2026-11-12
Job specializations:
Salary/Wage Range or Industry Benchmark: 125000 - 157000 USD Yearly USD 125000.00 157000.00 YEAR

Job Description & How to Apply Below

Modern Technology Solutions, Inc. (MTSI) is seeking a Lead System Architect to join our team in El Segundo, CA.

The MILSATCOM Systems Engineering, Integration and Test (MSEIT) team in support of Space Systems Command (SSC) in El Segundo is seeking an individual to provide requirements development and management support for the Military Satellite Communications (MILSATCOM) Capability area. The MILSATCOM portfolio of programs has an ongoing need for IA/Cybersecurity support, to meet the needs of our emerging next-generation protected SATCOM. The MSEIT contract provides leading-edge Systems Engineering & Integration (SE&I) support for the U.S. Space Force’s SSC.

We support the Space Force’s acquisition of state-of-the-art MILSATCOM systems, providing global secure, survivable, and protected communications for our nation’s warfighters. We seek technical individuals who will thrive in a highly collaborative work environment of small teams, using the most modern tools and methodologies to tackle the challenges of integrating complex space and ground communications systems.

Key Responsibilities
  • Serve as the Lead System Architect for MBSE, providing technical leadership, direction, and oversight for system modeling activities across the program.
  • Develop and maintain the program's MBSE strategy, modeling approach, architecture, governance, and roadmap in alignment with program systems engineering objectives and Digital Engineering initiatives.
  • Define and maintain the overall model architecture, including model organization, decomposition, viewpoints, relationships, naming conventions, modeling standards, and modeling patterns.
  • Lead development and maintenance of integrated system models representing system architecture, requirements, behaviors, functions, interfaces, verification relationships, and other elements of the technical baseline.
  • Establish and maintain traceability between mission needs, operational capabilities, system architecture, requirements, interfaces, verification activities, and supporting engineering artifacts.
  • Define the approach for integrating and, where appropriate, federating models and engineering data produced by government organizations, development contractors, support contractors, and other stakeholders.
  • Evaluate contractor-developed models and modeling approaches for consistency with program architecture, requirements, technical baseline objectives, and established modeling standards.
  • Manage the configuration of a Teamwork Cloud database employing multiple Project Usages.
  • Manage the data connectivity between Cameo System Modeler and IBM Rational DOORS.
  • Work closely with requirements engineers to establish and maintain relationships and traceability between modeled architecture and authoritative system requirements.
  • Work with interface engineering teams to ensure system interfaces, logical and physical connections, exchanges, and dependencies are consistently represented within the model.
  • Work with verification and test organizations to incorporate verification methods, relationships, evidence, and system behavior into the modeling environment as appropriate.
Work Environment

Location:

On-site

Travel Requirements:
Minimal

Working Hours:

Standard

Standard Qualifications
  • Active Secret clearance required with eligibility for TS/SCI
  • Bachelor’s degree in engineering, computer science, or related technical field.
  • 5+ years of experience in satellite systems, spacecraft development, or aerospace engineering.
  • Demonstrated experience leading MBSE efforts for complex systems.
  • Strong working knowledge of systems engineering principles across architecture, requirements, interfaces, verification, validation, and configuration management.
  • Demonstrated experience developing and managing complex system…
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