Cooling Engineer

Location: Spartanburg, SC Employment Type: Direct Hire Overview The Hybrid Space Liquid Cooling Subject Matter Expert (SME) serves as the technical authority and hands‑on expert for liquid cooling systems supporting high-density compute environments within a High-Performance Compute Center (HPCC). Reporting to the Hybrid Space Liquid Cooling Operations Manager, this role owns the day-to-day technical execution, troubleshooting, optimization, and validation of direct-to-chip liquid cooling systems, Coolant Distribution Units (CDUs), Rear Door Heat Exchangers (RDHXs), and associated controls and water chemistry systems. This is a deeply technical, operational role that functions as the escalation point for complex cooling issues in a 24/7 mission‑critical environment. The SME works closely with Operations, Mechanical, Electrical, and Controls teams to ensure thermal reliability, rapid fault isolation, and continuous system optimization. Key Responsibilities Serve as the primary technical authority for Hybrid Space liquid cooling systems, including CDUs, RDHXs, rack‑level cooling loops, isolation valves, and supporting mechanical equipment Perform advanced troubleshooting, fault isolation, and corrective actions for cooling‑related alarms, failures, and performance anomalies Support real‑time monitoring and analysis of temperatures, pressures, flows, and delta‑T metrics Optimize system efficiency, stability, and reliability through data‑driven analysis and field validation Support commissioning activities, system modifications, and upgrades impacting liquid cooling infrastructure Monitor and maintain water chemistry to ensure corrosion control, biological stability, and OEM compliance Perform sampling, testing, and analysis of system fluids (pH, conductivity, inhibitors, biological indicators) Coordinate with water treatment vendors on filtration, chemical dosing, and corrective actions Identify early indicators of fluid degradation or system risk and escalated proactively Incident Response & Technical Leadership Act as the primary technical escalation resource for operators and third‑party service providers Support incident response, root cause analysis, and post‑event reviews Collaborate with Mechanical, Electrical, and Controls teams to ensure hydraulic balance, thermal integration, and system redundancy Participate in change management reviews impacting compute cooling systems Maintain accurate as‑built documentation, operating procedures, and maintenance records Provide technical input for preventive maintenance tasks, procedures, and schedules Execute and support preventive maintenance on CDUs, RDHXs, isolation valves, and related components Train and mentor operators and technicians on liquid cooling systems Support performance trending, reporting, and identification of improvement opportunities Contribute technical recommendations for long‑term system enhancements Safety & Compliance Adhere to all EHS, Lockout/Tagout, confined space, and chemical handling requirements Ensure proper PPE usage and safe work practices Support compliance with applicable NFPA, ASHRAE, OSHA, and site‑specific standards Required Qualifications Bachelor’s degree in Mechanical Engineering, Facilities Engineering, or related discipline, or equivalent hands‑on experience 6+ years of experience in mission‑critical environments (data centers, HPC, or industrial cooling systems) Direct hands‑on experience with liquid cooling technologies such as CDUs, RDHXs, and/or direct‑to‑chip systems Strong knowledge of water chemistry management, corrosion control, and industrial cooling fluids Proven ability to troubleshoot complex mechanical and thermal systems in live operational environments Working knowledge of integrated mechanical, electrical, and control systems supporting high‑density compute Familiarity with NFPA, ASHRAE, and OSHA standards related to mission‑critical cooling infrastructure #J-18808-Ljbffr