Oussama Naaman

Designed and developed SAP ABAP backend solutions supporting Business Role Governance processes within SAP environments. Developed SAP Gateway OData services and CDS Views to expose and consolidate business role, organizational, and authorization data for SAP Fiori applications. Implemented object-oriented ABAP business logic for role validation, lifecycle management, workflow integration, and approval processing, while ensuring secure authorization checks, logging, and exception handling. Built integration services with identity and access management systems, optimized backend performance using modern ABAP and SAP HANA techniques, and participated in unit testing, code reviews, transport management, deployment, and production support. Worked closely with SAP Security, IAM, infrastructure, and functional teams to deliver secure, scalable, and high-quality backend solutions.

Designed and implemented the backend architecture for a custom SAP S/4HANA application using Object-Oriented ABAP. Developed SAP Gateway OData services and high-performance CDS Views to expose business data and support SAP Fiori applications. Implemented backend business logic for authorization determination, approval limits, purchasing organizations, and system parameter configuration, while integrating SAP HR organizational data to validate employee eligibility and automate business processes through SAP Workflow. Ensured secure and reliable solutions by implementing authorization checks, business validations, exception handling, logging, and error management. Optimized application performance using modern ABAP techniques, including CDS Views, Open SQL optimization, buffering, and reusable OO components. Worked closely with SAP Security, HR, Procurement, and functional teams throughout the development lifecycle, including code reviews, unit testing, transport management, deployment, and production support.