Senior Payroll Transition Specialist

Payroll Transformation Specialist - Contract, On-site, London/Essex

We're hiring a hands-on Payroll Transition Specialist for a leading global fintech to deliver complex payroll transformation across EMEA.

This is a delivery role, not governance or PMO. Based on-site in London/Essex, you'll work directly with payroll teams, vendors and stakeholders to take two major programmes through to stable go-live:

• Payroll vendor changes in Belgium, Germany and the Netherlands
• Migration of Germany's ADP Streamline payroll to ADP Celergo

What you'll own:

• End-to-end payroll testing - strategy, detailed test scripts, execution and defect resolution
• Parallel runs, reconciliation and sign-off ahead of go-live
• SOPs, procedures and operational documentation
• Training internal payroll teams on new platforms, processes and country legislation
• Embedding controls: approval frameworks, reconciliation, audit-ready documentation

What we need - please only apply if you meet the first three:

• Strong operational payroll expertise in Germany - essential
• Experience with Belgium and/or Netherlands payrolls - essential
• Proven hands-on experience delivering payroll transitions or implementations - essential
• ADP Celergo experience
• Deep knowledge of gross-to-net processing, statutory reporting and payroll controls
• Practical experience of payroll testing, managing multiple transitions at the same time, data validation and vendor migration
• Able to drive delivery independently in a fast-moving environment

German or Dutch language skills and experience with outsourced payroll models and Social Secretaries are a strong advantage.

Contract role, on-site in London/Essex. (inside IR35)