SAP Consultant

SAP SME Consultant (ABAP | ECC & S/4HANA) - ONSITE Location: Neenah, WI or Oconomowoc, WI (Onsite) Role Overview We are seeking a highly skilled SAP ABAP Consultant to serve as a Subject Matter Expert (SME) for validating client technical specifications related to moving data from SAP ECC and S/4HANA into a data lake. This role focuses on reviewing and reverse-engineering ABAP technical specs, custom Z-tables, and extraction logic to ensure accurate data mapping, business logic interpretation, and readiness for downstream ETL development. The ideal candidate brings deep hands-on ABAP experience, strong analytical skills, and the ability to collaborate effectively with functional teams, data engineers, and client stakeholders. Qualifications • 12–15 years of SAP ABAP experience, with 3+ years in S/4HANA • Experience with ECC to S/4HANA migration projects • Strong understanding of FI, CO, SD, MM, PP, and SRM modules • Exposure to SAP BW / BI is a plus Key Responsibilities • Review and understand technical specifications written by ABAP developers for ECC and S/4HANA systems. • Analyze and reverse engineer custom Z-tables and ABAP programs across SAP modules (FI, MM, SD, HR, etc.). • Collaborate with SAP functional teams to understand business logic, dependencies, and data flows. • Prepare and validate detailed technical documentation, including: • Data extraction logic • Field-level mappings • Business rule interpretation • Source-to-target data lineage • Review technical specification documents and raise clarifications to ensure data engineers can build accurate and efficient data lake ETL pipelines. Required Skills & Experience Core ABAP (ECC & S/4HANA) • Classical and OO ABAP programming • ALV Reports (Classical & OO) • BDC, BAPI, RFC • SmartForms and Adobe Forms • User Exits, Customer Exits, BADIs • Function Modules, Modularization techniques, Macros Advanced ABAP (S/4HANA-centric) • CDS Views (Basic & Composite) • AMDP (ABAP Managed Database Procedures) • OData services and Fiori integration • ABAP RESTful Programming Model (RAP) • CDS Annotations • Business Object Processing Framework (BOPF) Data Handling & Extraction • Z-table data extraction with joins, filters, and delta logic • Performance tuning of SELECT statements • Open SQL and Native SQL • Data Dictionary object creation (Z tables, views, domains, data elements) • Handling clustered and pooled tables (ECC legacy) Documentation & Technical Design • Technical Specification Document (TSD) preparation, review, and validation • Field-level mapping and source-to-target lineage • Business logic documentation and transformation rules • Functional-to-technical traceability Why Join Us • Work on complex SAP-to-data-lake initiatives • Play a key SME role influencing enterprise data strategy • Collaborate with cross-functional and data engineering teams