Payroll Specialist

The responsibilities are not limited to the following, other items will be assigned as needed.

• →Act as the first point of contact for employee payroll inquiries via the ticketing system, ensuring timely, accurate resolution with a strong service focus and escalating complex issues as needed
• →Support end-to-end payroll processing across Canada and U.S. employees across multiple states on schedule, from time and attendance collection and validation through data entry, calculation review, pre-transmission audit and post-payroll reconciliation
• →Reconcile payroll registers, tax liabilities and general ledger postings, and validate confirmation reports; research and correct variances
• →Perform 401(k) reconciliations each pay cycle, tying employee deferrals, employer match and loan repayments to recordkeeper files, and resolve discrepancies and process corrections
• →Process garnishments, levies, child support and other involuntary deductions, including calculating withholdings within federal and state limits, setting up orders, remitting payments on time and maintaining documentation
• →Apply state and local tax withholding and unemployment (SUI) requirements for multi-state employees, track work-location changes, and support new state registrations with guidance from the Payroll Manager
• →Support quarterly and year-end reporting across federal, state and local jurisdictions, including W-2 and T4 preparation and W-2 corrections, and research and respond to tax notices with guidance as needed
• →Support accurate taxation and reporting of employer-paid benefits and equity compensation, including RSU vesting, NSO exercises, Employee Stock Purchase Plan (ESPP) and Incentive Stock Option (ISO) events, in partnership with senior team members
• →Load and validate import files and prepare ad hoc payroll reports as requested
• →Use company-approved AI tools to assist with payroll audits, variance analysis, reconciliations and drafting employee responses, always applying human review
• →Protect employee PII and confidential compensation data
• →Collaborate with stakeholders such as Finance, People Ops and Benefits, and assist other teams with special projects
• →Ensure compliance with SOPs, local regulatory requirements, and SOX control standards
• →Support internal and external audits and respond to requests for supporting documentation
• →Monitor and stay current on statutory and regulatory payroll changes across the U.S. and Canada
• →Support documentation of payroll processes and contribute to process improvements and automation initiatives
• →Work effectively in a fast-paced, high-volume environment while managing multiple priorities and deadlines

• Minimum 3-5 years of multi-state payroll processing experience, including setting up state EINs and managing state and local tax registrations and filings
• Strong working knowledge of payroll and HRIS software
• Advanced knowledge of Microsoft Office programs including Excel, Word, Outlook
• Strong critical thinking skills to resolve issues or improve processes; self-starter who can work and learn quickly
• Working knowledge of, or strong interest in, AI tools (e.g., Excel / Workday AI features or generative AI assistants) and the ability to apply them to payroll audits, research and reporting, with sound judgment in verifying outputs and safeguarding sensitive data
• Ability to prioritize and work under deadline pressures
• Sound judgment in knowing when to escalate issues and seek guidance
• Strong knowledge of payroll principles, best practices, federal and state regulations and procedures
• Analytical skills and ability to perform detailed, technical payroll calculations
• Strong communication skills written and verbal
• Meticulous attention to detail, with a record of accurate, well-documented work
• Hands-on experience with SOX compliance requirements
• Preferred: Prior experience at a publicly held company
• Preferred: Workday and OneSource experience
• Preferred: FPC or CPP certification

The Trade Desk does not accept unsolicited resumes from search firm recruiters. Fees will not be paid in the event a candidate submitted by a recruiter without an agreement in place is hired; such resumes will be deemed the sole property of The Trade Desk. The Trade Desk is an equal opportunity employer. All aspects of employment will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, veteran status, or any other status protected under federal, state, or local law.