Payroll and Tax Workday Implementation Manager

How We Show Up for Our Patients: As a leading provider of outcomes-driven care for individuals and communities living with chronic conditions, Somatus is helping patients across the country enjoy More Healthy Days at Home™. Care at Somatus goes beyond treatment. Through a whole‑person approach, we deliver outcomes‑driven integrated care and show up #SomatusStrong for our patients and teammates. We partner closely with health plans, health systems, and provider groups to support patients with, or at risk of developing, cardio, kidney, metabolic, or other chronic conditions. We hire the brightest and boldest — talent driven by purpose and impact. Since our founding in 2016, our growth trajectory isn’t just a milestone — it’s a signal. Our leadership values culture and leads with intention as we remain dedicated to driving clinical excellence. Does this sound like you? Keep reading. How You'll Make an Impact: The Interim Payroll and Payroll Tax Implementation Manager will lead and own the multi-state payroll and tax workstreams for our Workday implementation. This role is highly hands-on and requires a unique mix of system configuration expertise, deep payroll tax knowledge, and project management skills. The successful candidate will ensure a smooth transition from our legacy system, manage the 2026 year-end and Q1 2027 tax balancing, parallel-test the new system, and train the internal team. This is a non-exempt, temporary position with an immediate start date and an end date of April 9, 2027. Workday Implementation & Testing · Serve as the primary Workday Payroll and Tax subject matter expert (SME). · Lead the design, configuration, and testing in Workday of all payroll functions. · Support data mapping, data migration validation, and system configuration auditing related to all payroll functions. · Drive Phase 1 and Phase 2 Parallel Testing, comparing legacy payroll results against Workday. · Identify, document, log, and resolve payroll defects and configuration errors. · Validate end-to-end employee data, including deductions, garnishments, and withholding elections. · Identify and implement effective and efficient payroll processes and system improvements. Payroll Tax Compliance · Validate multi-state and local tax setup across all jurisdictions in Workday. · Manage the 2026 payroll year-end tax close and filing reconciliations. · Oversee Q1 2027 payroll tax balancing and reconciliations. · Audit payroll reports, general ledger (GL) mapping files, and third-party tax filings. · Manage audits, inquiries, and tax notices where applicable and in partnership with the payroll specialists. · Ensure Workday is set up to be configured in compliance with federal, state, and local wage and hour laws, payroll tax regulations, and company policies. · Stay informed about regulatory changes affecting payroll (FLSA, tax changes, multi-state rules, etc.). Team Leadership & Collaboration · Provide hands-on training to internal payroll specialists and administrators on payroll and payroll tax. · Review and validate live payroll processing prepared by the Senior Payroll Administrator. · Partner with HR, IT, and Finance to streamline post-go-live cross-functional workflows. · Document new internal control procedures, payroll policies, and standard operating procedures (SOPs). · Support day-to-day payroll operational gaps during peak implementation cycles. How You'll Strengthen Our Team: Qualifications: Bachelor’s degree in Accounting, Finance, HR, Business, or related field (or equivalent experience). 5–7+ years of payroll experience, including multi-state payroll. Strong knowledge of payroll laws, tax regulations, and compliance requirements. Experience implementing Workday across multiple states with over 1,200 employees. Proficiency with payroll/HRIS systems (ADP, Workday, UKG, Ceridian, Paycom, etc.). Excellent attention to detail, analytical skills, and confidentiality. Ability to work in a fast-paced environment and manage deadlines with a small team. This job description is not designed to cover or contain a comprehensive listing of activities, duties, or responsibilities required of the employee. Duties, responsibilities, and activities may change at any time with or without notice. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions. Our Commitment to Diversity: At Somatus, we celebrate what makes us unique — our people. We believe that a culture intentionally built to foster and support our unique passions, experiences, and perspectives helps fuel us in the pursuit of our mission. Somatus, Inc. provides equal employment opportunity to all individuals regardless of race, color, creed, religion, gender, age, sexual orientation, national origin, disability, veteran status, or any other characteristic protected by law. Discrimination of any type will not be tolerated. The Interim Payroll and Payroll Tax Implementation Manager will lead and own the multi-state payroll and tax workstreams for our Workday implementation. This role is highly hands-on and requires a unique mix of system configuration expertise, deep payroll tax knowledge, and project management skills. The successful candidate will ensure a smooth transition from our legacy system, manage the 2026 year-end and Q1 2027 tax balancing, parallel-test the new system, and train the internal team. This is a non-exempt, temporary position with an immediate start date and an end date of April 9, 2027. Workday Implementation & Testing · Serve as the primary Workday Payroll and Tax subject matter expert (SME). · Lead the design, configuration, and testing in Workday of all payroll functions. · Support data mapping, data migration validation, and system configuration auditing related to all payroll functions. · Drive Phase 1 and Phase 2 Parallel Testing, comparing legacy payroll results against Workday. · Identify, document, log, and resolve payroll defects and configuration errors. · Validate end-to-end employee data, including deductions, garnishments, and withholding elections. · Identify and implement effective and efficient payroll processes and system improvements. Payroll Tax Compliance · Validate multi-state and local tax setup across all jurisdictions in Workday. · Manage the 2026 payroll year-end tax close and filing reconciliations. · Oversee Q1 2027 payroll tax balancing and reconciliations. · Audit payroll reports, general ledger (GL) mapping files, and third-party tax filings. · Manage audits, inquiries, and tax notices where applicable and in partnership with the payroll specialists. · Ensure Workday is set up to be configured in compliance with federal, state, and local wage and hour laws, payroll tax regulations, and company policies. · Stay informed about regulatory changes affecting payroll (FLSA, tax changes, multi-state rules, etc.). Team Leadership & Collaboration · Provide hands-on training to internal payroll specialists and administrators on payroll and payroll tax. · Review and validate live payroll processing prepared by the Senior Payroll Administrator. · Partner with HR, IT, and Finance to streamline post-go-live cross-functional workflows. · Document new internal control procedures, payroll policies, and standard operating procedures (SOPs). · Support day-to-day payroll operational gaps during peak implementation cycles. Qualifications: Bachelor’s degree in Accounting, Finance, HR, Business, or related field (or equivalent experience). 5–7+ years of payroll experience, including multi-state payroll. Strong knowledge of payroll laws, tax regulations, and compliance requirements. Experience implementing Workday across multiple states with over 1,200 employees. Proficiency with payroll/HRIS systems (ADP, Workday, UKG, Ceridian, Paycom, etc.). Excellent attention to detail, analytical skills, and confidentiality. Ability to work in a fast-paced environment and manage deadlines with a small team. This job description is not designed to cover or contain a comprehensive listing of activities, duties, or responsibilities required of the employee. Duties, responsibilities, and activities may change at any time with or without notice. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.