Payroll Transformation Lead: US ADP Outsourcing (Remote)

Middlemore; United States; Remote; USD 120,000 - 150,000; Full time

Job summary

Middlemore is seeking a US Payroll Project Manager to lead a major payroll outsourcing programme with ADP. You will own the project plan, manage the transition for a largely unionised workforce, and ensure accurate data migration between Workday and ADP.

The assignment runs 7–8 months with a November 2026 start, delivering a reliable outsourced payroll service on time. Ideal candidates have proven US payroll outsourcing experience, strong vendor management skills, and the ability to interpret

Qualifications

• Proven experience leading US payroll outsourcing or implementation projects.
• Experience supporting unionised workforces and interpreting collective bargaining requirements for payroll.
• Experience with HRIS platforms, notably Workday, and ADP integrations.
• Ability to manage vendors and cross-functional teams to fixed deadlines.

Responsibilities

• Own the project plan, milestones, risks, dependencies and stakeholder reporting.
• Lead the transition with ADP and internal teams to deliver a reliable outsourced payroll service.
• Review and document payroll processes and requirements, including union pay rules.
• Coordinate data migration and validation between Workday and ADP.
• Lead UAT, parallel payroll runs and reconciliation, ensuring accuracy.
• Manage readiness for launch and transition to live service.

Skills

US payroll

Payroll outsourcing

Vendor management

Change management

Union payroll knowledge

Tools

Workday

ADP

Job description

Middlemore is seeking a US Payroll Project Manager to lead a major payroll outsourcing programme with ADP. You will own the project plan, manage the transition for a largely unionised workforce, and ensure accurate data migration between Workday and ADP.

The assignment runs 7–8 months with a November 2026 start, delivering a reliable outsourced payroll service on time. Ideal candidates have proven US payroll outsourcing experience, strong vendor management skills, and the ability to interpret