Principal Project Manager - Subcontractor Technical Representative (STR)

Mission Support and Test Services, LLC (MSTS) manages and operates the Nevada National Security Site (NNSS) for the U.S. National Nuclear Security Administration (NNSA).  Our MISSION is to help ensure the security of the United States and its allies by providing high-hazard experimentation and incident response capabilities through operations, engineering, education, field, and integration services and by acting as environmental stewards to the Site’s Cold War legacy.  Our VISION is to be the user site of choice for large-scale, high-hazard, national security experimentation, with premier facilities and capabilities below ground, on the ground, and in the air. (See NNSS.gov for our unique capabilities.) Our 2,750+ professional, craft, and support employees are called upon to innovate, collaborate, and deliver on some of the more difficult nuclear security challenges facing the world today.   

• MSTS offers our full-time employees highly competitive salaries and benefits packages including medical, dental, and vision; both a pension and a 401k; paid time off and 96 hours of paid holidays; relocation (if located more than 75 miles from work location); tuition assistance and reimbursement; and more.  
• MSTS is a limited liability company consisting of Honeywell International Inc. (Honeywell), Jacobs Engineering Group Inc. (Jacobs), and HII Nuclear Inc.

 MSTS Construction is actively seeking to hire a highly skilled and experienced Principal Subcontractor Technical Representative (STR) to provide critical technical oversight and contractual assurance for construction projects. This role will act as a primary technical liaison, integrating deeply with project teams and procurement throughout the project execution to monitor and ensure construction subcontractor performance and compliance. The Principal STR will represent Construction during the formation, solicitation, technical evaluation, and award phases of assigned subcontracts, serving as the primary focal point for field execution issues and day-to-day technical matters on construction subcontracts, with robust technical integrity.

Key Responsibilities

Technical Oversight & Quality Assurance:

• Act as the primary technical authority for monitoring and inspecting the subcontractor’s quality of work.
• Manages medium projects ($5-20M TPC). Responsible for all aspects of the project over the entire lifecycle (initiation, planning, executing, monitoring & controlling, and closing).
• Ensure diligent technical execution and compliance of subcontracted work, consistent with emphasis on structured oversight.
• Establish and maintain a comprehensive STR file for relevant records and documents, ensuring traceability and accountability.
• Regularly monitor Subcontractor performance and progress, communicating effectively with stakeholders and subcontractor project management personnel and providing constructive feedback.
• Confirm that all work is performed strictly in accordance with subcontract requirements and technical specifications.
• Approve submittals as specified in the procurement documents, verifying technical conformity.
• Formally accept confirming work and deliverables.
• Ensure hold and test points are properly performed and approved in work packages before proceeding with construction activities, safeguarding technical quality.
• Respond promptly to requests for information on technical and performance matters.
• Coordinate the resolution of deviations and nonconformances to the scope of work, ensuring rapid and effective technical solutions.
• Ensure any issues or nonconformances with technical requirements are thoroughly documented, reported to the Procurement Representative and Subcontractor, and resolved prior to subcontract closeout.
• Coordinate the onboarding (badging and training) for subcontractor employees.
• Perform reporting of any safety or security infractions by subcontractor while work is being performed.
• Ensure all records and documents are managed and tracked in accordance with governing processes
• Serve as primary liaison between Subcontractor and MSTS procurement & project management.
• Work closely with the Responsible Manager or Project Manager and relevant support organizations to develop a comprehensive STR oversight requirements Work Plan based on deliverables and exhibits in the Subcontract Statement of Work (SOW).
• Coordinate project activities with affected building tenants and facility managers to minimize disruption and ensure smooth execution.
• Review and approve invoices to ensure technical alignment and compliance with subcontract requirements, providing the essential technical verification.

• Bachelor’s degree in a related field or equivalent training and experience plus at least 8 year