Chiller and Thermal Systems Repair Engineer

About Bitec

Bitec Co. Ltd supplies repair, spare parts, refurbishment and second-source components to specialty and mature node wafer fabs. Headquartered in Korea with operations in Singapore, Malaysia, Europe and the United States, we support CMP, etch, CVD, implant and thermal systems across the major OEM platforms. Our Oregon site handles mechanical and thermal repair and US logistics for North American customers.

The role

You will repair and overhaul the thermal systems that keep semiconductor process equipment running: process chillers, heat exchangers, temperature and humidity controllers and chemical pumps. The work is hands-on and diagnostic, taking units down to component level, rebuilding them and proving them out under load before they return to the customer. This is a bench and depot role based at our Oregon site, with occasional on-site preventive maintenance at customer fabs.

What you will be working on

• Diagnose, overhaul and repair process chillers across Affinity single and triple loop, SMC Thermo Chiller and Thermo Con, Neslab HX150 and HX300, Julabo, Haake TCU fuzzy logic units and AMAT chiller variants.
• Component-level work including compressor overhaul and gas recharge, motor and impeller replacement, copper tubing leak repair, solenoid valves and pressure transducers.
• Heat exchanger repair, including thermoelectric module and sensor replacement.
• Overhaul and test Shinwa and ASAHI temperature and humidity controllers used on TEL and K.E track systems.
• Chemical pump repair and rebuild.
• Run full functional and load testing to customer parameters, including continuous run testing over multiple days, and record results in service reports.
• On-site preventive maintenance at customer fabs: cooling coil cleaning, compressor gas top up, temperature and humidity tuning and calibration.
• Receive, inspect and pack units for the US repair flow, and coordinate with the Korea depot where scope routes there.

What we are looking for

• Five to eight years in mechanical, electrical, refrigeration or a related engineering discipline.
• Hands-on experience with refrigeration or closed-loop thermal control systems, ideally in semiconductor, industrial process or precision manufacturing environments.
• Able to fault find to component level from schematics and service manuals rather than by board swapping.
• Practical skills in brazing, leak detection and refrigerant handling.
• EPA Section 608 certification, or the ability to obtain it.
• Clear written service reporting in English.
• Authorized to work in the United States.

Helpful, not essential

• Prior experience in a depot, refurbishment or remanufacturing environment.
• Familiarity with semiconductor fab equipment and cleanroom protocol.
• Exposure to any of the chiller or controller platforms listed above.
• USD 30 to 40 per hour, depending on experience and certifications such as EPA Section 608.