The role focuses on leveraging OIC as the central integration platform to enable bidirectional communication, including transaction processing (e.g., purchase orders and invoices), financial data lookups, and reference/master data exchanges (e.g., vendor, and accounting data). Design and develop REST service interfaces in OIC, including hosted services for inbound calls from the external system (e.g., transaction processing and data lookups) and outbound integrations to the external system (e.g., sending acknowledgments, status updates, and master data).