Critical Systems Technician II/III, HVAC

Reliant Critical Infrastructure
Ashburn, VA

Join a dynamic team supporting critical data center operations as a Critical Systems Technician II/III, HVAC. This role offers the opportunity to work with advanced HVAC systems in a mission-critical environment, ensuring the reliability and efficiency of essential infrastructure. The position provides hands-on experience with a variety of HVAC equipment and systems, with opportunities for professional growth and skill development. The company values reliability, technical expertise, and a commitment to maintaining high standards in facility operations.

Responsibilities

  • Assist in the operation, maintenance, and monitoring of data center HVAC systems and supporting infrastructure with minimal supervision.
  • Read and interpret electrical schematics, blueprints, and shop drawings.
  • Support air and water balancing efforts to optimize energy use and maintain occupant comfort.
  • Perform preventive maintenance, troubleshooting, and repairs on HVAC equipment, including air and water-cooled chillers, centrifugal and screw package chillers, natural gas boilers, unit heaters, electric duct heaters, cooling towers, and various water pumps.
  • Work with pneumatic, DDC, and variable frequency drive controls, as well as HVAC air distribution systems such as AHUs, FCUs, and fans.
  • Utilize HVAC diagnostic tools and instruments to ensure system performance.
  • Complete assigned tasks and other duties as directed by the supervisor.
  • Maintain regular and reliable attendance as an essential function of the role.

Qualifications

  • High school diploma or GED required.
  • Minimum of 3 years of commercial HVAC service experience required; 4-7+ years preferred.
  • Knowledge of refrigeration principles and basic electricity for HVAC systems.
  • Proficiency with Microsoft Office or related software.
  • EPA Universal refrigerant recovery certification required.
  • HVAC/R Servicing Certificate preferred.
  • Valid Virginia or Maryland driver’s license required.
  • Must be a U.S. citizen.
  • Ability to obtain security clearance preferred.
  • Ability to occasionally lift and carry up to 50 pounds.
Posted 2026-06-19

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