Senior Payroll Transition Specialist

Senior Payroll Transition Specialist 6 Months initial contract Basildon, UK (On-site, 5 days per week) (Apply online only) 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 environmentsDesirable: 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 ..... full job details .....