Senior Workday HRIS Integration & Data Migration Specialist

This is a delivery-critical opportunity for a hands-on Workday professional who can lead complex data migration, payroll and workforce-management integrations while coordinating internal stakeholders and an established implementation partner.

Our client is a well-established international organisation undertaking a significant transformation of its HR technology environment. The programme involves the implementation and integration of core HR, payroll and workforce-management platforms across an international stakeholder landscape.

• Lead HR core, payroll and time-and-attendance data-migration activities.
• Manage data extraction, cleansing, mapping, transformation and reconciliation.
• Coordinate integration design, delivery and end-to-end testing.
• Review and challenge implementation-partner deliverables.
• Manage data quality, defects, dependencies and delivery risks.
• Support GDPR, information-security and data-governance controls.
• Contribute to cutover readiness and related HRIS transformation activities.
• Work with HR, payroll, technology and programme stakeholders across a hybrid international team. 

• Substantial experience in HRIS integration and data migration.
• Strong Workday HCM knowledge, including EIB, reporting and data conversion.
• Experience integrating HR platforms with payroll and workforce-management systems.
• Proven delivery of end-to-end integration testing with an implementation partner.
• Strong knowledge of data mapping, transformation, quality and reconciliation.
• Experience with SQL, advanced Excel, REST/SOAP APIs, XML/JSON and SFTP.
• Experience with a relevant integration platform such as Boomi, MuleSoft or Azure Integration Services.
• Understanding of GDPR and security controls for employee data.
• Strong stakeholder, communication and risk-management skills.
• Ability to work effectively in a fast-paced, international environment. 

• A ten-month contract on a high-profile HR technology programme (start date in September 2026)
• Work location in Basel (Switzerland), Colmar (France) or Manchester (UK)
• 40% home office
• Opportunity to work within an international environment.
• Direct engagement with senior HRIS and programme stakeholders.
• Limited international travel of up to 5%.
• Competitive compensation, subject to the final engagement model.