Senior Accounting Manager, Manufacturing Operations

Career Opportunities: Senior Accounting Manager, Manufacturing Operations (29067) Requisition ID 29067 -Posted 09/24/2026 - Accounting/Finance - Regular Exempt Full-Time Employee 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.com . Position Summary: We are seeking a high energy and motivated Factory Plant Senior Accounting Manager to join our Amkor Technology Arizona facility. The Factory Plant Senior Accounting Manager is responsible for overseeing all plant-level accounting, financial reporting, cost accounting, and internal controls at Amkor’s manufacturing facility located in Peoria. This role partners closely with operations, engineering, and supply chain teams to ensure accurate product costing, inventory valuation, and financial performance visibility. The position plays a key role in supporting operational efficiency, driving cost discipline, and ensuring compliance with U.S. GAAP and Amkor’s corporate policies. This position will report to the Controller of Amkor Technology Arizona facility. Initial location is in Tempe Corporate office for training and integration, with eventual work location in our North Peoria Manufacturing site. Essential Duties and Responsibilities: Plant Accounting & Financial Reporting: Review journal entries and account reconciliations Prepare balance sheet & income statement analytics and fluctuation explanation Manage monthly, quarterly and annual close process for the factory Coordinate with corporate accounting on consolidation, technical accounting, and external reporting requirements Ensure timely and accuratefinancial statements in accordance with US GAAP and Amkor policies Cost Accounting & Inventory Management: Oversee standard costing, cost rollups, and variance analysis (labor, overhead, material) Analyze manufacturing variances and partner with operations to drive cost improvements Manage inventory valuation, cycle counts, and physical inventory processes Ensure accurate accounting for WIP, finished goods, and scrap Operational Finance Partnership: Partner with plant leadership on budgeting, forecasting, and financial planning Provide actionable insights on cost drivers, capacity utilization, and efficiency metrics Support capital expenditure (CapEx) planning, tracking, and asset accounting Drive financial discipline in manufacturing operations and investment decisions Internal Controls & Compliance: Ensure compliance with SOX controls and internal audit requirements Support external and internal audit activities Maintain strong internal controls over financial reporting, inventory and fixed assets Lead or participate in various ad-hoc analysis and special projects as assigned Identify and drive continuous process improvements and automation opportunities Leadership & Team Management This position starts as individual contributor and will manage a team as operation scales up, with potential succeeding the Controller Required Qualifications: Bachelor's Degree or higher in Accounting or Finance (CPA strongly preferred) Minimum of eight (8) years of accounting/finance experience Strong background in cost accounting and inventory accounting Demonstrate strong US GAAP technical accounting and internal controls knowledge Strong analytical and problem-solving skills Strong communication and leadership skills Ability to work in a fast-paced, high-volume manufacturing environment Demonstrate proficiency with MS Office with advanced proficiency in Excel Experience in a manufacturing environment required; semiconductor or high-tech preferred Public company and SOX compliance experience preferred Previous experience with financial systems (ERP such SAP/Oracle preferred) Preferred Qualifications: Professional designation such CPA, CMA, or CFA Semiconductor or high-tech experience Location: This position will be based at the temporary Phoenix, AZ site and the Peoria site during the construction phase, and will transition to the Peoria site once factory operations begin. Amkor is proud to be an Equal Opportunity Employer. We do not discriminate on the basis of race, color, ancestry, national origin, religion or religious creed, mental or physical disability, medical condition, genetic information, sex (including pregnancy, childbirth, and related medical conditions), sexual orientation, gender identity, gender expression, age, marital status, military or veteran status, citizenship, or other characteristics protected by state or federal law or local ordinance. #J-18808-Ljbffr Amkor Technology, Inc.