Gagan Shimpi

About Gagan Shimpi

SAP ABAP Cloud developer at Deloitte with ~3 years delivering clean-core S/4HANA…

Experience

1. Btp Developer (Rap-cap) (Associate Analyst)

   Deloitte

   Oct 2023 — Present · Pune, IN

   Involved in end-to-end SAP ECC to S/4HANA migration projects, contributing to backend redevelopment and modernization of custom functionalities.Redesigned custom applications and reports to use S/4HANA-optimized data models and CDS-based architecture.Developed RAP (RESTful ABAP Programming Model) applications in S/4HANA, streamlining core business processes and reducing data retrieval time by 30%.Designed and implemented custom OData services using ABAP RAP, resulting in 25% faster API response times and seamless frontend-backend integration.Developed and tested standard SOAP/Odata APIs in SAP S/4HANA.Built and optimized CDS Views, behavior definitions, and service bindings in the RAP model, achieving a 35% reduction in query execution time.Modeled CDS entities using Core Data Services (CDS) and exposed them via OData V2/V4 services through SAP Cloud Application Programming (CAP).Security and authentication for RAP framework using annotation and DCL ( Data control language.)Hands-on experience with CAP project structure (db/, srv/), service annotations, and metadata handling for robust API design in S/4HANA as part of Side by side Extensibility.Fiori & UI ExtensibilityEnhanced the \"Maintain Business Partner\" Fiori app during ECC to S/4HANA migration, adding custom fields, annotations, and improving user experience—leading to a 15% increase in user adoption.Leveraged In-App Extensibility in S/4HANA to introduce custom fields, UI modifications, and business logic extensions for SAP Fiori apps.Developed and migrated conversion objects for automated data migration from ECC to S/4HANA, reducing manual effort by 50%.Developing Fiori Elements applications integrated with SAP CAP and CDS views.Exposure to SAP Business Technology Platform (BTP) services including destination configuration and service bindings.Extended standard Group Reporting CDS View in S/4HANA with custom quarter-to-date logic, enhancing financial reporting and data tracking by 20%.