Payroll and Benefit Specialist

MediaTek is a global fabless semiconductor industry leader, providing solutions from the edge to the cloud and powering over 2 billion connected devices every year. Established in 1997, our leading-edge technologies keep the world connected and enhance everyday life. At the forefront of innovation, MediaTek drives advancements in transformative technologies such as AI, 5G/6G, and Wi-Fi 8. Our high-performance, power-efficient solutions form the foundation for a smarter, more connected world, enabling devices from smartphones, smart homes, and AI PCs to high-performance computing, automotive, and AI data centers. As a trusted partner to the world's leading brands, we are committed to ensuring access to world-class technology for everyone. Our dedication to accelerating AI underscores our mission to enrich the future of humanity.

Position Summary
MediaTek USA Inc. is seeking a Payroll and Benefit Specialist to join the Compensation and Benefits team. This role owns and supports key aspects of multi-state, multi-cycle payroll processing, employee benefit administration, and 401(k) plan operations. The position works closely with internal HR, Finance, and operational teams, as well as ADP, Fidelity, TriNet, benefit vendors, carriers, third-party administrators, and government agencies. The successful candidate will ensure accurate and timely payroll and benefit transactions, maintain employee data in HR systems, support regulatory and plan compliance, resolve employee inquiries, and maintain complete documentation and audit trails. The ideal candidate is detail-oriented, highly organized, able to anticipate issues, and comfortable managing multiple priorities in a fast-paced environment while maintaining confidentiality and strong customer service.
Responsibilities
• Manage the multi-cycle, multi-state payroll, including data collection, validation, calculation, review, reconciliation, payroll adjustments, corrections, repayments, and off-cycle transactions.
• Maintain accurate employee, payroll, earnings, deduction, and benefit data in ADP Workforce Now, SAP, and related systems; review new-hire records and confirm automated payroll and benefit actions are completed successfully.
• Coordinate payroll administration for paid and unpaid leaves, short-term disability, state leave programs, expatriate employees, tax equalization, fringe benefits, and international-assignment data.
• Prepare and reconcile payroll reports for Finance, tax agencies, audits, and compliance activities, and administer state and local withholding and unemployment insurance accounts, registrations, notices, payments, and required reporting.
• Administer U.S. employee benefit programs, including health and welfare, flexible spending accounts, commuter benefits, leave-related benefits, and retirement benefits.
• Coordinate benefit enrollments, life events, terminations, deductions, benefit change files, vendor invoices, and payroll interfaces; reconcile benefit deductions and employer contributions and resolve discrepancies with Finance, carriers, vendors, and third-party administrators.
• Support employee benefit communications, new-hire education, plan materials, FAQs, open enrollment, and payroll and benefit inquiries; research issues and provide timely, accurate resolution.
• Support 401(k) plan administration with Fidelity and ADP, including pre-tax, Roth, catch-up, and after-tax contributions, employer match, vesting, true-up activities, contribution limits, and plan rules.
• Review earnings codes and compensation elements for 401(k) eligibility; coordinate system configuration, testing, payroll-to-Fidelity interfaces, and correction of contribution or tax issues, including related employee communications and payroll or Form W-2 impacts.
• Support retirement-plan compliance and annual administration, including nondiscrimination testing, plan audits, census and contribution data, reconciliations, participant communications, and required reporting.
• Maintain payroll and benefit procedures, checklists, approvals, supporting documentation, and audit trails; conduct periodic audits, identify control gaps, and implement process improvements.
• Partner with headquarters, internal teams, and vendors on payroll, compensation, benefits, and HRIS implementations, interfaces, enhancements, testing, and upgrades.
• Monitor federal, state, and local payroll, wage-and-hour, leave, benefit, and retirement-plan requirements and support timely implementation of regulatory and plan changes.
• Perform special projects, ad hoc reporting, and analysis as needed.

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