Facilities Wastewater Technician

Amkor Technology, Inc. (Nasdaq: AMKR) is the world’s largest U.S. headquartered OSAT and is a global leader in outsourced semiconductor packaging and test services. With a strong track record of innovation, a broad and diverse geographic footprint and solid partnerships with lead customers, Amkor delivers high-quality solutions that enable the world’s leading semiconductor and electronics companies to bring advanced technologies to market.

The company’s comprehensive portfolio includes advanced packaging, wafer-level processing, and system-in-package solutions targeting applications for smartphones, data centers, artificial intelligence, automobiles and wearables. For more information visit

Amkor Technology Arizona is seeking an experienced Wastewater Technician, responsible for operating, monitoring, maintaining, and troubleshooting the site’s wastewater treatment & BRF systems.

• Operate and monitor inorganic and organic wastewater treatment components such as equalization tanks, lift stations, clarifiers, filter press, decanterss, neutralization skids, sludge handling systems, and chemical dosing equipment.
• Perform routine plant rounds, equipment checks, data logging, and performance monitoring.
• Maintain consistent effluent quality to meet permitted discharge requirements.
• Operate and maintain BRF systems including evaporators, concentrators, crystallizers, heat exchangers, brine pumps, and associated process controls.
• Monitor salinity, concentration levels, evaporation efficiency, flow rates, and system temperatures to maintain stable BRF performance.
• Perform routine inspections for scaling, fouling, leaks, vibration, abnormal noises, or process upsets.
• Respond to alarms, system trips, loss of cooling, heater issues, or brine carryover events.
• Collect wastewater and brine samples for internal and external lab analysis (pH, TSS, COD, conductivity, hardness, metals, and process‑specific contaminants).
• Calibrate and maintain field/lab instruments such as pH probes, conductivity meters, turbidity sensors, and online analyzers.
• Review trends, identify deviations, and initiate corrective actions.
• Perform PMs and repairs on pumps, valves, mixers, blowers, chemical dosing systems, evaporators, heat exchangers, filters, sensors, and instrumentation.
• Troubleshoot system failures such as flow blockages, pump seal failures, overheating equipment, chemical feed issues, scaling buildup, and instrumentation inaccuracies.
• Support cleaning procedures including descaling, line flushing, membrane maintenance, and evaporator cleaning intervals.
• Safely handle treatment chemicals including acids, caustics, coagulants, flocculants, antiscalants, oxidizers, and BRF system cleaning agents.
• Maintain detailed system logs, flow totals, chemical usage, sampling records, instrument calibrations, and maintenance activities using CMMS tools.
• Ensure wastewater and brine reduction operations comply with state, local, and internal environmental regulations.
• Support inspections, audits, incident reporting, and permit compliance documentation.
• Assist with startup, commissioning, and qualification of new wastewater and BRF equipment.
• Collaborate with engineering to optimize brine concentration cycles, evaporator performance, chemical dosing efficiency, and system reliability.

• 3+ years of experience in wastewater treatment, industrial water systems, or similar utility operations.
• Understanding of chemical and physical wastewater treatment methods, including brine concentration
• Ability to read P&IDs, flow diagrams, equipment manuals, and SOPs.
• Experience with sampling, lab instruments, and wastewater quality monitoring.
• Ability to work in industrial treatment environments including…