Senior Payroll Transition Specialist in Basildon, Essex

Senior Payroll Transition Specialist
6 Months initial contract
Basildon, UK (On-site, 5 days per week)
£550-600 per day (Inside IR35)

My client, in the Fintech industry are hiring a hands-on Payroll Transition Specialist to support major payroll transformation activity across EMEA.

In this role you'll lead end-to-end payroll transitions across Germany, Belgium, and the Netherlands, including a key migration from ADP Streamline to ADP Celergo in Germany.

This is a delivery role - you'll be in the detail, working directly with payroll teams and vendors to ensure successful testing, transition, and go-live.

Key Responsibilities
Lead payroll vendor/platform transitions end-to-end
Own payroll testing (strategy, scripts, execution, defect resolution)
Support UAT, data validation, and parallel runs
Drive accurate, reconciled payrolls through to go-live
Create clear SOPs and ensure knowledge transfer
Train teams on new systems and processes
Act as payroll SME across Payroll, HR, Finance, and vendors

Key Requirements
Proven experience delivering payroll transitions / implementations
Strong ADP Celergo experience
Germany payroll expertise (essential)
Experience with payroll testing, parallel runs, and reconciliations
Ability to operate hands-on in fast-paced environments

Desirable:
Belgium / Netherlands payroll experience
Outsourced payroll / vendor management experience
German or Dutch language skills

Ideally you will have some of the below specific experience to be a suitable match for this engagement
High-impact transformation work across multiple countries
Full ownership of payroll transition delivery
Visible role working closely with key stakeholders