As SAP CO IT Consultant, you will have these key responsibilities: Support the Controlling (CO) workstream across all phases of our S/4HANA template build and rollout, from design through hypercare; Contribute to Fit-to-Template workshops, clarify requirements, and translate business needs into functional specifications; Support configuration of core CO areas - Overhead Cost Controlling (Cost Center Accounting, Internal Orders), Product Cost Controlling (Product Cost Planning, Cost Object Controlling), and Profitability Analysis (account-based CO-PA / Margin Analysis and costing-based CO-PA) - in line with the S/4HANA standard and the global template design; Leverage the S/4HANA Universal Journal (ACDOCA) and real-time FI-CO integration to ensure a single, reconciled source of truth across Finance and Controlling; Support Project System (PS) and Investment Management (IM) topics where they interface with Controlling, Safeguard the integration and process consistency of CO with FI, MM, SD, and PP, and help clarify cross-functional dependencies; Coordinate CO deliverables, timelines, and system readiness within the workstream; Prepare and execute CO test scenarios (unit, integration, UAT), and drive defect analysis and resolution; Support migration of CO master and transactional data, validate data consistency (e.g. balances, allocations, master-data structures), and assist reconciliation between legacy and S/4HANA systems; Guide business and key users during rollout and hypercare and help resolve CO-related incidents. Identify improvement opportunities and contribute to process optimization.