Senior​/Principal Mechanical Maintenance Technician - CA Onsite

Senior/Principal Mechanical Maintenance Technician - CA Onsite

Sandia National Laboratories is the nation’s premier science and engineering lab for national security and technology innovation.

As a member of the Facilities Mechanical Maintenance Team, you will focus on HVAC, plumbing, and the Facility Control System (FCS) across approximately 80 buildings at the California Site. You will collaborate with cross‑functional teams to ensure continuous, efficient operation of site‑wide facilities.

What Your Job Will Be Like:

• Diagnose, troubleshoot, and repair HVAC, plumbing, and FCS equipment by inspecting field devices, sensors, piping, valves, and mechanical components.
• Perform routine, preventive, and emergency maintenance on HVAC units, boilers, chillers, pumps, plumbing fixtures, and related mechanical and electrical equipment.
• Use hand and power tools to conduct repairs and maintenance tasks across multiple trades.
• Conduct inspections of facilities, machinery, and equipment to identify potential issues and prevent operational breakdowns.
• Interpret blueprints, sketches, wiring diagrams, layouts, drawings, and technical specifications to guide maintenance, repair, and installation activities.
• Continuously monitor system performance, troubleshoot irregularities, and respond to service requests and emergency repairs prioritizing operational urgency.
• Identify operational risks and implement mitigation strategies to enhance system reliability and reduce downtime.
• Provide technical guidance and support to facility personnel on system operation, maintenance best practices, and repair procedures.
• Collaborate closely with Facility Managers, System Engineers, Operations Engineers, Work Planners, and End Users to plan and execute maintenance, repairs, installations, and upgrades efficiently.
• Support mechanical installation and upgrade projects, including control system enhancements, and oversee contractor activities to ensure quality and compliance.
• Adhere strictly to safety protocols, regulatory requirements, and company policies to maintain a safe, compliant, and efficient work environment.

Due to the nature of the work, the selected applicant must be able to work onsite.

• High school diploma or GED plus five (5) or more years of relevant experience, or an equivalent combination of education and experience.
• Experience performing general maintenance activities, including repair and maintenance of plant and/or office building structures and equipment.
• Experience with the operation of HVAC systems (chillers, boilers, air handling units, VFDs, and related subsystems).
• Experience with plumbing systems (pumps, backflow prev enters, valves, piping networks, and associated fixtures).
• Ability to obtain and maintain a DOE Q‑level security clearance.

• Graduation from a recognized Journeyman Apprenticeship Program or possession of a valid Journeyman Card (HVAC or Plumbing).
• Graduation from an ABET‑accredited college program in Mechanical Engineering, HVAC Technology, Plumbing Technology, or a related field.
• Valid EPA Section 608 Universal Certification or ability to obtain within one year of hire.
• Valid Cross‑Connection Specialist Certification or ability to obtain within one year of hire.
• Valid Backflow Prevention Assembly Tester Certification or ability to obtain within one year of hire.
• Commercial Driver’s License with a trailer and tank endorsement; must be able to maintain medical certification.
• Experience with Automated Logic WebCTRL software for building automation control.
• Experience in Facility Control System programming, operations, installation, or maintenance.
• Strong knowledge of DDC control systems and ability to program and troubleshoot effectively.
• Working knowledge of…