Facilities Mechanical Engineering Manager

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 Mechanical Engineering Manager responsible for leading the design, installation, commissioning, and operation of HVAC and process utility systems for Amkor’s OSAT factory. This includes cleanroom air systems, exhaust and abatement systems, chilled water, cooling towers, steam systems, closed loop water systems- PCW, and CDA, Instrument air and process vacuum systems.

This role ensures reliable, efficient, and compliant delivery of mechanical infrastructure to support cleanroom and manufacturing operations. In addition, this role will lead the facilities mechanical operations, including building and managing the mechanical engineering and technician teams, developing standard operating procedures (SOPs), preventive maintenance (PM) programs, and ensuring long‑term system reliability and performance.

Responsibilities will evolve throughout the project lifecycle, ranging from design and commissioning to full‑scale operations, requiring adaptability and a proactive approach to each phase.

• Lead and develop a team of HVAC and process mechanical engineers and technicians, including hiring, performance management, and technical coaching.
• Establish and implement operational frameworks including SOPs, preventive maintenance (PM) programs, and maintenance strategies to ensure system reliability and uptime.
• Strong understanding of:
• HVAC systems, cleanroom environmental controls, and exhaust systems.
• Process utilities including chilled water, cooling towers, condenser water, steam, Process cooling water, Heating Hot Water and air systems- CDA, instrument air, vacuum systems.
• Water treatment practices for closed‑loop water systems, including chemical treatment, filtration, corrosion control, and biological control.
• Material compatibility for process piping and utility systems to prevent corrosion, scaling, and contamination risks.
• Semiconductor tool hookup design.
• Collaborate with both Base build and tool hook up design consultants to ensure HVAC/Exhaust and process utility system requirements are met.
• Review engineering drawings, submittals, and monitor construction progress.
• Lead coordination across all trade partners (mechanical, electrical, controls, CSA, vendors, and general contractors) to ensure integrated system design, constructability, and seamless execution from design through operations.
• Identify and resolve abnormalities during construction, start‑up, and operations phases.
• Oversee documentation, manuals, and handover processes for HVAC and process utility systems.
• Address Out-of-Control Action Plan (OCAP) conditions affecting cleanroom environments and utility performance.
• Monitor system performance through trend analysis, inspections, and technical reporting.
• Lead capacity planning, troubleshooting, and sustaining activities to meet production demands.
• Identify and implement energy efficiency and sustainability improvements across HVAC and process systems.
• Research and implement technology upgrades to improve reliability, efficiency, and safety.
• Partner with operations and maintenance teams to optimize system performance and maintenance strategies.
• Conduct system evaluations and implement improvements through capital and expense projects.
• Apply reliability engineering principles, including FMEA and root cause analysis, to improve system performance.
• Review tool hook‑up designs, exhaust layouts, and process schematics, and perform…