• Design, develop, and maintain integration interfaces between Oracle Fusion Cloud HCM and federal HR ecosystem systems including EHRI (XML/SFTP), eOPF (EDF/FDF/IDF feeds), USA Staffing (RPI/NHI/TUAPI), USA Performance, Employee Express, and MyPay • Engineer bidirectional payroll integration interfaces with federal payroll shared service providers (e.g., NFC, DFAS, IBC, GSA), implementing HCM Extract and payroll costing flows per provider-specific file specifications • Build and configure integration flows using Oracle Integration Cloud (OIC), leveraging OIC adapters, orchestration patterns, error handling, and retry logic to meet program uptime SLAs • Implement all integration endpoints through the federal API Management (APIM) gateway, adhering to OAuth 2.0 authentication, REST/JSON message formats, and OpenAPI 3.0 specification standards • Develop webhook-based event-driven integrations and near-real-time data synchronization flows for time-sensitive transactions including benefits enrollment, payroll changes, and personnel action notifications • Design and implement integration monitoring dashboards, alerting rules, and automated error recovery workflows to ensure proactive issue detection and resolution within SLA timeframes • Create and maintain comprehensive integration technical design documents, interface control documents (ICDs), data mapping specifications, and API documentation using OpenAPI 3.0 format • Collaborate with cybersecurity engineers to ensure all integration endpoints implement FIPS 140-3 encryption, CUI handling protocols, and SCIM 2.0 identity provisioning where required • Participate in SAFe Agile ceremonies, contributing to sprint planning, backlog refinement, and integration testing coordination across functional and technical Agile Release Trains • Support parallel payroll validation testing by building automated comparison tools that reconcile Oracle Fusion Cloud HCM payroll outputs against legacy system outputs for each agency migration wave • Communicate effectively with project team members and direct stakeholders to report progress, explain technical approaches, and support collaborative problem-solving within assigned workstreams and Agile Release Train ceremonies