Oracle Integration & API Engineer
CACI International IncAbout the role
The Opportunity:
CACI is seeking an Oracle Integration and API Engineer to design, build, and sustain the integration fabric that connects Oracle Fusion Cloud HCM to the vast federal HR technology ecosystem. A large-scale federal HCM modernization program will replace legacy HR systems across multiple federal agencies serving federal civilian employees, and reliable integrations are the connective tissue that makes it all work. You will engineer bidirectional interfaces between Oracle Fusion Cloud HCM and systems including EHRI, eOPF, USA Staffing, USA Performance, Employee Express, MyPay, and federal payroll shared service providers (NFC, DFAS, and others) — all routed through the federal API Management (APIM) gateway using OAuth 2.0, REST/JSON, and OpenAPI 3.0 standards. Using Oracle Integration Cloud (OIC) and Oracle HCM APIs, you will build resilient, secure, and high-performance integration flows that meet program uptime SLAs. This is an exceptional opportunity for an integration engineer who wants to architect the plumbing behind one of the largest federal HR cloud transformation programs. This position is at the T4 (senior) level, suited for an experienced technical professional who operates with significant independence, resolves complex technical challenges using advanced techniques, and provides guidance and mentorship to less experienced team members.
Responsibilities:
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
Support FEHB Data Hub integration for benefits carrier connectivity, implementing enrollment, reconciliation, and premium remittance data flows per federal specifications
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
Apply established methods, standards, and practices to independently resolve functional and technical issues of moderate scope, contributing to team knowledge bases and consulting with senior staff on complex or unfamiliar problems as they arise
ommunicate 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
Qualifications:
Required:
Applicable combination of education and experience:
T3 - Bachelor's degree an
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