We are looking for a Payroll Administrator to support accurate and timely payroll operations for a multi-state employee population in Waltham, Massachusetts. This position plays an important role in managing end-to-end payroll activities, maintaining compliance with applicable regulations, and helping ensure employees are paid correctly each cycle. The ideal candidate brings strong payroll processing experience, attention to detail, and confidence working with ADP Workforce Now in a fast-paced environment.<br><br>Responsibilities:<br>• Manage complete payroll processing from initial data review through final submission for a workforce of approximately 101 to 500 employees.<br>• Administer payroll activities across multiple states while applying current wage, tax, and compliance requirements accurately.<br>• Review payroll data for earnings, deductions, taxes, and time-related inputs to resolve discrepancies before each pay cycle is finalized.<br>• Maintain employee payroll records in ADP Workforce Now and ensure updates are entered correctly and on schedule.<br>• Investigate and address payroll-related questions from employees and internal stakeholders in a thorough and timely manner.<br>• Reconcile payroll reports and supporting records to confirm accuracy and support audit readiness.<br>• Partner with relevant teams to coordinate payroll changes such as new hires, terminations, compensation updates, and benefit deductions.<br>• Support payroll-related process improvements or system-related changes when needed while preserving accuracy and continuity of service.

• Proven experience handling full-cycle payroll processing in a detail-oriented business environment.<br>• Background managing payroll for employees working in multiple states.<br>• Experience supporting payroll for organizations with approximately 101 to 500 employees.<br>• Proficiency using ADP Workforce Now for payroll administration and record maintenance.<br>• Strong knowledge of payroll practices, tax withholding, deductions, and compliance standards.<br>• High level of accuracy, organization, and discretion when working with sensitive employee information.<br>• Ability to identify issues, perform reconciliations, and resolve payroll discrepancies efficiently.

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