• Planning, managing and implementing SAP ERP HCM EC Payroll projects of various sizes • Supporting integration-related questions around Employee Central Payroll (ECP) and actively accompanying system integration • Developing roadmaps for adopting modern SAP technologies together with clients • Participating in the implementation and adaptation of various collective bargaining agreements and payroll processes • Advising clients with in-depth subject-matter expertise, including regarding adjacent modules and subsystems • Performing customizing tasks, including extending and creating schemes, cycles and mashups, and configuring the Payroll Control Center (PCC) • Monitoring and implementing statutory changes, especially in the areas of tax and social security • Handling SPAU and SPPD during upgrades and year-end changes • Continuously developing personal expertise in new technologies and digital solutions

• prepare and coordinate the flow of personnel documents across Polish and international RTB House entities; • coordinate the hiring process for new Employees and Associates; • participate in the creation, review, and updating of internal procedures; • coordinate the preparation of documentation related to work permits for foreign employees; • manage time tracking, attendance, absences, and the settlement of leaves and sick leaves; • cooperate with accounting offices on payroll-related matters; • support the preparation of internal reports, analyses, and summaries for business needs.

• Own the full payroll cycle (pre-closing to payment) for local employees. • Calculate gross-to-net salaries, social charges, and tax liabilities. • Validate external payroll data and ensure 100% accuracy before processing. • Manage end-to-end payroll for remote teams, including reimbursements and fee calculations. • Execute rigorous mid-cycle and final payroll audits. • Prepare monthly payroll projections to support Finance planning.

• Lead or support the deployment, configuration, and post-implementation support of Workday Payroll solutions, with a focus on US/Canadian Payroll. • Partner with client Payroll leads to analyze, enhance, and expand existing Payroll configurations and business processes. • Manage functional adjustments and configuration updates while evaluating downstream impacts across modules. • Support clients in troubleshooting payroll issues and optimizing system performance. • Collaborate closely with internal and client teams across Payroll, Absence, and Time Tracking to ensure seamless integrations and accurate processing. • Prioritize and respond to client cases, maintaining a high level of service delivery.