Senior Chiller Technician – Semiconductor Facility

LotusWorks; Chandler (AZ); On-site; USD 80,000 - 110,000; Full time

Benefits offered by this job

Medical, Dental and Vision Insurance

401k Retirement Plan

Paid Time Off & Holidays

Job summary

LotusWorks is seeking a Chiller Mechanic to operate, maintain, troubleshoot, repair, and optimize large-scale chilled water and refrigeration systems in a semiconductor manufacturing facility. The role requires deep knowledge of industrial HVAC, refrigeration cycles, and controls, with hands-on experience in mission-critical environments.

You will monitor, troubleshoot, and improve performance across chillers, pumps, and related equipment while ensuring compliance with safety and environmental

Qualifications

• 8+ years operating and maintaining industrial chillers, refrigeration, or mission-critical cooling systems.
• Strong troubleshooting across mechanical, electrical, refrigeration and controls systems.
• Experience in semiconductor, mission-critical, industrial, or high-tech manufacturing facilities preferred.
• Ability to read and interpret mechanical drawings, P&IDs, manuals and control sequences.
• Understanding of chilled water systems, refrigeration cycles and HVAC operations.

Responsibilities

• Operate and monitor centrifugal, screw, scroll, and reciprocating chillers.
• Monitor chilled water, condenser water, glycol, and heat recovery systems for stable operation.
• Review pressures, temps, flows, and efficiencies across systems.
• Monitor SCADA/BMS trends, alarms and performance to identify issues.
• Adjust operating parameters to optimize energy efficiency.
• Coordinate chiller staging, sequencing and load balancing across plant systems.
• Support seasonal startup/shutdown activities for chillers and utilities.
• Perform preventive maintenance on chillers and auxiliary equipment.
• Lubrication inspections and oil analysis for reliability.
• Inspect/maintain compressors, condensers, evaporators, cooling towers, pumps, VFDs, valves, heat exchangers, expansion devices.
• Replace filters, seals, gaskets, bearings; verify refrigerant charge and oil.
• Perform vibration analysis and alignment on rotating equipment.
• Diagnose and resolve mechanical, electrical, refrigeration, and controls failures.
• Coordinate outage planning, LOTO, and isolation activities.
• Support RCA investigations and corrective actions.
• Handle refrigerants per EPA/regulations; recover, evacuate, recharge, leak-test.

Skills

8+ years experience

Troubleshooting skills

Semiconductor facilities experience

Reading mechanical drawings / P&IDs

Chilled water / refrigeration systems

Education

Bachelor's in Mechanical Engineering

High School Diploma

Tools

IBM Maximo

Job description

LotusWorks is seeking a Chiller Mechanic to operate, maintain, troubleshoot, repair, and optimize large-scale chilled water and refrigeration systems in a semiconductor manufacturing facility. The role requires deep knowledge of industrial HVAC, refrigeration cycles, and controls, with hands-on experience in mission-critical environments.

You will monitor, troubleshoot, and improve performance across chillers, pumps, and related equipment while ensuring compliance with safety and environmental