Senior Payroll Specialist - Global

Responsibilities

• Process end to end payroll for multiple countries (e.g., Canada, Italy), ensuring timely and accurate execution. Assist with end to end payroll setup in Mexico.
• Oversee payroll operations and manage invoices through EOR partner, Deel, across regions including APAC, LATAM, and EMEA.
• Ensure compliance with local tax regulations and manage employer payroll account registrations as needed.
• Collaborate with payroll vendors to resolve tax notices, support audits, and facilitate system transitions or process updates.
• Coordinate with Treasury to ensure timely payroll funding and related tax payments.
• Prepare and submit payroll reports for accounting and equity
• Maintain accurate and synchronized employee data across Workday, Immedis/UKG, Velocity, Deel, and Fidelity.
• Support year-end payroll processing, documentation, and reporting.
• Respond promptly to payroll-related employee inquiries.
• Partner with HR, Benefits, and Finance teams to ensure data integrity

Requirements

• Bachelor's degree in Accounting, Finance, or related field; Payroll certification (CPP) is a plus.
• In-house end to end payroll management would be an advantage
• Ideally 3-5 years' experience managing payroll across multiple regions or countries
• Strong knowledge of international payroll compliance
• Proficient in Deel, or similar payroll systems; experience with Immedis/UKG and Workday is advantageous.
• Advanced Excel skills
• Proven track record managing sensitive information and exceptional attention to detail required
• About Integral Ad Science:
• Equal Opportunity Employer:
• California Applicant Pre-Collection Notice:
• #LI-Hybrid

Benefits

Additional Information

Job Description: We are seeking an experienced Senior Payroll Specialist (Global) to manage multi-regional payroll operations across Canada, Italy, China, Mexico, and additional global locations. This role involves close coordination with Employer of Record (EOR) partner Deel. International payroll experience is required; expertise in Italian, Chinese, or Mexican payroll is a plus but not mandatory.

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