Maintenance Mechanic

Donohoe Companies Inc., The
Onsite

About The Position

Complete Building Services (CBS) is seeking a Maintenance Mechanic for its operations in Fairfax, VA. As a division of The Donohoe Companies, Inc., CBS focuses on building operations and facilities maintenance for commercial office and health-care facilities. The Maintenance Mechanic will be responsible for the overall maintenance, repair, and operational efficiency of these facilities and their systems. This role requires a strong understanding of HVAC, plumbing, basic electrical, and general mechanical systems. The successful candidate will perform preventative maintenance, diagnose complex issues across multiple trades, and ensure a safe, code-compliant, and comfortable environment for building occupants.

Requirements

  • Broad understanding of commercial plumbing, basic electrical systems, and the refrigeration cycle.
  • Experience using digital control systems to monitor and adjust building environments.
  • Ability to read and interpret technical specifications, blueprints, and wiring diagrams.
  • Proficiency with basic plumbing and HVAC diagnostic tools, including multimeters, manifold gauges, and leak detectors.
  • Hands-on experience with drain cleaning equipment (snakes and cameras) and pipe repair methods.
  • Strict adherence to Lockout/Tagout (LOTO) procedures, confined space entry, and fall protection protocols.
  • Proper handling and disposal of refrigerants in accordance with federal law.
  • Ability to rapidly diagnose complex issues across different utility systems under pressure.
  • Capacity to lift 50+ lbs, climb ladders, and work in confined spaces, mechanical rooms, or extreme weather conditions.
  • High School Diploma or GED required.
  • 3 to 5+ years of experience in facility maintenance, commercial plumbing, or commercial HVAC.
  • Valid driver’s license with a clean driving record.

Nice To Haves

  • Completion of an apprenticeship program or technical degree preferred.
  • Siemens Desigo BAS preferred.
  • Experience with brazing, soldering, and threading pipe is highly preferred.
  • EPA Section 608 Certification (Universal CFC).
  • HVAC or Journeyman License.

Responsibilities

  • Perform routine inspections, filter changes, belt replacements, and system tuning on air handlers, condensers, chillers, and boilers.
  • Troubleshoot mechanical malfunctions and repair/replace components like compressors, motors, and thermostats.
  • Maintain and repair commercial plumbing systems, including sinks, toilets, and associated piping.
  • Identify leaks or clogs and perform necessary repairs using Pro-Press, PVC, copper, and cast-iron methods.
  • Operate drain cleaning equipment (e.g., K-50 snake) and plumbing cameras for accurate diagnostics.
  • Read wiring diagrams and utilize multimeters to test voltage, amperage, and continuity.
  • Troubleshoot basic electrical circuits and replace faulty mechanical parts.
  • Conduct daily facility rounds and system testing to ensure peak energy efficiency and prevent equipment failure.
  • Test pipe or tubing joints for leaks.
  • Interact with Building Management Systems (BMS/BAS) Siemens Desigo to monitor the building climate remotely and respond to alarms.
  • Maintain detailed logs of all work orders performed, parts used, and system performance metrics.
  • Adhere strictly to OSHA safety standards, local building codes, and EPA environmental regulations.
  • Work with CMMS system to open and close work orders daily.

Benefits

  • EOE, including disability/veterans

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What This Job Offers

Job Type

Full-time

Career Level

Mid Level

Education Level

High school or GED

Number of Employees

101-250 employees

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