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In Row Heat Exchange Technician for Data Cooling Systems:
Location: Chantilly/ Herndon/ Frederick MD
Required: Journeyman License in HVAC, Piping, or Mechanical/ Electrical Systems
in DC OR MD OR VA
Pay: $57.30/hr affiliated with the Local 602 Union
Hours: M-F 7a-3p with daily OT available
Site specific training provided to broaden your skill set!
Position Overview
GMS is seeking highly skilled Journeyman-Level IRHX Service Technicians to
support Level 2 (Pre-Startup Verification) and Level 3 (Startup & Commissioning)
activities for advanced IRHX cooling systems in hyperscale data centers. This
role is critical to ensuring operational readiness and compliance with project
commissioning standards. Technicians will perform mechanical inspections,
electrical verification, and commissioning tasks in a fast-paced, high-volume
environment.
Core Responsibilities
* Execute Level 2 Pre-Startup Verification (PSV): Inspect IRHX modules, verify
mechanical/electrical assemblies, identify deficiencies, and perform
corrective actions.
* Perform Level 3 Startup & Commissioning: Energize equipment safely, program
ECM fans and VFDs, validate sensors, troubleshoot operational issues, and
complete commissioning documentation.
* Maintain strict adherence to safety protocols and structured workflows.
* Communicate effectively with Mechanical Contractors (MC), General Contractors
(GC), and internal GMS teams.
* Represent GMS professionally in hyperscale data center environments.
Required Qualifications
* Journeyman-level license in one jurisdiction: MD, VA, or DC.
* 3–5 years of experience at journeyman level in HVAC, piping, or
mechanical/electrical systems.
* Strong mechanical aptitude with hydronic systems (pumps, coils, glycol
loops).
* Electrical proficiency: control wiring, Modbus networks, and ability to read
wiring diagrams.
* Ability to troubleshoot mechanical and electrical deficiencies independently.
* Familiarity with VFDs, ECM motors, and digital control systems.
* Competence in completing technical documentation accurately.
Preferred Qualifications
* 3-5 years of experience in mission-critical environments (data centers or
similar).
* Proven experience with equipment startup and commissioning processes.
* Advanced knowledge of low-voltage control wiring systems and networked
controls.
* OSHA 30, NFPA 70E, and Lockout/Tagout certifications highly preferred.
Click here to learn more about Crete United:
https://youtu.be/eArEfojheAc [https://youtu.be/eArEfojheAc]
General and Mechanical Services, a Crete United Company, is an equal opportunity
employer, considering all applicants for employment regardless of race, color,
religion, sex, gender identity, pregnancy, national origin, ancestry,
citizenship, age, marital status, physical disability, sexual orientation,
genetic information, or any other characteristic protected by state of federal
law. Women and minorities are encouraged to apply.
