Senior SAP HCM Solution & Integration Architect - Freelance

Title: Senior SAP HCM Solution & Integration Architect - Freelance Location: Remote (Bonn, Germany) For an international enterprise environment, we are looking for an experienced **Senior HR IT / SAP HCM Solution & Integration Architect** to support a global HR technology transformation and transition program. The role combines **HR application architecture, integration architecture, technical governance and hands-on SAP HCM expertise**. This is **not a classic Payroll role** and not a purely functional SAP HCM consulting position. * **Start:** Mid-November 2026 * **Duration:** 6 months+ * **Go-live:** Planned for January / February 2027 * **Contract:** Freelance * **Workload:** 100% * **Location:** Remote * **Language:** English We are specifically looking for a **technically strong SAP HCM Solution / Integration Architect**. Profiles focused primarily on **SAP Payroll, SuccessFactors Payroll or purely functional SAP HCM consulting without architecture and integration responsibility** are not suitable for this assignment. ## Tasks * Design and further develop the global HR application and integration architecture * Act as technical lead and design authority for the implementation team * Design and review integrations between SAP HCM, S/4HANA, SuccessFactors and other enterprise systems * Work with SAP Integration Suite / CPI, APIs, OData, REST, SOAP and middleware technologies * Define architecture principles, technical standards, data flows and integration governance * Support security architecture, IAM, RBAC, segregation of duties and GDPR requirements * Support audit findings, test cycles, technical issue resolution and go-live preparation * Take over from the current consultant and support go-live, stabilization and ongoing technical ownership ## Requirements * Extensive experience in HR IT, SAP HCM, Solution Architecture or Enterprise Architecture * Strong SAP HCM background, ideally including Core HR, Personnel Administration and Organizational Management * Strong experience in Solution Architecture and Integration Architecture * Experience with SAP S/4HANA and/or SAP SuccessFactors * Strong integration experience with SAP Integration Suite / CPI, APIs and middleware * Strong technical understanding beyond purely functional SAP HCM consulting * Experience with global / multi-country landscapes, security, IAM, roles and GDPR * Fluent English, strong stakeholder communication and experience leading technical teams Nice-to-haves * Business Object Repository * SAP Shared Memory * Carve-out or transition experience * Global SAP transformation programs * Application Operations * Post-go-live stabilization / hypercare * Experience in international corporate environments