Senior Payroll Manager We are seeking an experienced Senior Payroll Manager to join our Human Resources team and lead and support the delivery of US, Americas, and expatriate payroll for 3,000+ employees in a fast-paced, high-control environment. This role will act as the internal payroll tax subject matter expert, partnering closely with HR (Benefits, Compensation, Global Mobility), as well as Finance and Legal. Principal Responsibilities Payroll Production & Leadership * Manage and support the end-to-end delivery of bi-monthly US, Puerto Rico and expatriate payroll in Workday, ensuring accuracy, timeliness, and strong controls * Provide leadership, coaching, and development for the payroll team * Partner with Finance and internal stakeholders to collect, validate, and process payroll inputs each pay period (e.g., deferred compensation, referral bonuses, taxable benefits, 401(k)) Payroll Tax, Compliance & Mobility (SME) * Serve as the internal payroll tax and compliance SME, including deep knowledge of: * multi-state and multi-jurisdictional taxation (US domestic and international cross-border) * wage reporting, taxable income treatment, and employment tax rules * employee mobility (remote work, multi-state workers, business travelers, domestic/international assignments) * US Citizens worldwide wage and tax requirements * Evaluate the payroll and tax impact of employee mobility and ensure appropriate reporting/withholding treatment * Monitor changing federal/state/local regulations; assess business impact and lead implementation of policy, process, and system updates Controls, Reconciliations, Year-End & Audits * Manage quarterly and annual processes including tax filings, reconciliations, and W-2 production * Lead the W-2 process with the vendor, including review of additional earnings and validation of accuracy/timeliness * Oversee internal and external audits and compliance reporting (including 401(k) and Workers’ Compensation) * Design, enhance, and monitor payroll controls, reconciliations, and review processes; ensure audit-ready documentation Vendor, Systems & Projects * Manage third-party payroll/tax vendors (registrations, tax notices, quarterly/annual reconciliations, filings, and payments) * Partner with HRIS/HR Systems teams on Workday Payroll updates, releases, testing plans, and post-release validations * Drive operational efficiency via process improvement, automation, and KPI development * Respond to employee inquiries and develop employee communications as needed * Produce routine and ad hoc reporting and support special projects as required Qualifications / Skills Required * Bachelor’s degree required (Accounting/Finance or another business-related field preferred) * 10+ years of multi-state payroll management experience in a complex business environment * Deep expertise in employment taxes, wage reporting, and multi-jurisdictional taxation (including mobility/expatriate considerations) * Thorough understanding of full-cycle payroll and the ability to explain payroll impacts to the general ledger/accounting * Proven ability to research, interpret, and implement regulatory changes * Workday Payroll experience required (experience with other large-scale payroll platforms a plus) * Advanced proficiency in Microsoft Excel * Strong communication skills (verbal and written); comfortable presenting to and partnering with senior stakeholders * Proven experience with vendor management, project management, and driving process improvements * Highly detail-oriented, strong ownership mindset, and able to operate effectively under tight deadlines while maintaining confidentiality Millennium is a total compensation organization where you will be eligible for a base salary, discretionary performance bonus, and a comprehensive benefits package. The estimated base salary range for this position is $160,000 to $250,000, which is specific to New York and may change in the future. When finalizing an offer, we take into consideration an individual’s experience level and the qualifications they bring to the role to formulate a competitive total compensation package

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Senior Payroll Manager

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