Description Leidos is seeking a detail oriented, dependable, Senior Payroll Tax & Compliance Specialist with excellent analytical abilities to join its team. This position will be responsible for providing support related to payroll tax, audit requests, status reporting, special projects, and other duties as assigned. This role reports to the Employee Experience, Tax and Compliance Manager.In this role you will serve as a subject matter expert for U.S. and Canadian payroll tax compliance, independently managing complex payroll tax matters, driving resolution of tax issues, and ensuring compliance with federal, state, local, and provincial regulations.Key Responsibilities:Serve as the primary payroll tax subject matter expert for multi-state U.S. and Canadian payroll operations, ensuring ongoing compliance with federal, state, local, and provincial tax regulations.Independently research, analyze, and resolve complex payroll tax issues, agency inquiries, and notices from the IRS, state and local tax authorities, CRA, and provincial agencies.Lead payroll tax compliance activities related to employee hires, transfers, and organizational changes, ensuring accurate tax withholding and reporting setup.Engage directly in communications with federal, state, local, and Canadian tax agencies to resolve escalated tax matters and compliance issues.Conduct detailed audits and reviews of employee tax configurations, payroll tax withholdings, and system setups to identify and mitigate compliance risks.Oversee payroll tax adjustments, amendments, and corrections, including complex W-2/W-2c processing and employee tax record remediation.Perform advanced analysis, reconciliations, and research to support payroll tax audits, regulatory examinations, and compliance initiatives.Review and validate quarterly and annual payroll tax filings, including Forms 941, 940, W-2, W-2c, T4, and other required U.S. and Canadian tax reporting.Provide expertise in Canadian payroll tax compliance,