Critical Facilities Technician (Liquid Cooling)

The Critical Facilities Technician (Liquid Cooling) is responsible for providing onsite guidance, training, and technical support to data center technicians. Data Center Lead specializing in building and supervision of custom racks with chilled water solutions manages the design, integration, and deployment of high-density infrastructure (often 30kW–100kW+ per rack) designed for AI and HPC workloads. They bridge the gap between IT hardware requirements and facility engineering, specializing in Direct Liquid Cooling (DLC), Rear Door Heat Exchangers (RDHx), and Coolant Distribution Units (CDUs) to improve PUE and energy efficiency.

• →Design and integrate custom liquid‑cooled racks, including manifolds, piping, fluid couplings, and secondary cooling loops tied to facility chilled‑water systems through CDUs
• →Integrate and validate Building Management System (BMS) sensors, controls, and monitoring hardware to ensure accurate telemetry for coolant flow, temperature, pressure, and rack‑level thermal performance.
• →If you want a slightly different flavor, here are two alternates depending on how deep you want to go:
• →Deploy and support RDHx and direct‑to‑chip cold‑plate systems, ensuring proper thermal performance, pressure balance, and coolant flow rates
• →Implement and maintain leak‑detection systems, drip trays, coolant chemistry controls, and material compatibility standards to protect IT equipment
• →Oversee installation of CDUs, piping, and high‑density rack infrastructure in coordination with mechanical contractors and facilities engineering teams
• →Serve as the liaison between data center technicians, engineering, technical services, and quality assurance teams, ensuring alignment with operational standards
• →Coordinate, schedule, and provide work direction to field service technicians while maintaining safety, quality, and productivity expectations
• →Perform quality checks, documentation updates, and operational reviews for all liquid‑cooling and high‑density rack deployments
• →Conduct regular physical and visual inspections of liquid‑cooled systems, racks, and facility infrastructure to identify risks or performance issues
• →Support installations, moves, additions, and changes involving high‑density GPU/CPU servers, networking equipment, and power systems
• →Maintain logs, tracking forms, and documentation related to cooling systems, rack builds, and project execution
• →Manage capacity planning for space, power, cooling, and port availability within liquid‑cooled environments
• →Follow incident, change, and risk‑management processes to ensure safe and compliant operations
• →Provide onsite technical support, troubleshooting, and escalation management for liquid‑cooling systems and high‑density hardware
• →Light traveling from site to site
• →Perform other duties as assigned

• High School Degree or Equivalent required; Bachelor’s Degree or Associate Degree preferred
• Licenses/Certificates/Designations: OSHA‑10, mechanical or liquid‑cooling OEM certifications preferred
• 4–6 years of data center technician experience with strong knowledge of data center best practices
• Understanding of fluid dynamics, heat transfer, coolant flow rates, pressure differentials, and thermal load calculations
• Experience with mechanical engineering principles, HVAC systems, and data center facility operations
• Familiarity with high‑density GPU/CPU servers, high‑performance networking, and 48V DC power systems
• Experience handling liquid‑cooled systems including coolant chemistry, leak detection, and valve/shutoff integration
• Strong organizational and communication skills with the ability to manage multiple competing priorities
• Ability to respond promptly to issues, provide updates, and escalate when necessary
• Ability to travel 0% – 25%
• Basic computer skills preferred
• Field Service or Data Center Technician experience preferred

• Work is physically strenuous, and workers are required to lift heavy packages up to 50 pounds
• Work may require excessive bending or stooping
• Employee required to walk long distances repeatedly throughout the day
• Employee required to climb ladders
• Employee required to use hand tools

#LI-VR1 #Onsite