Role: SeniorHealthcareInteroperabilityEngineer Location: 100% Remote Requirements (Must Have): Strong C# developer (7+ years) building complex APIs in .NET 8.0 or higher Deep FHIR expertise:FHIR R4 specification, resource modeling, profiles, extensions, Implementation Guides CMSInteroperabilityFinal Rule knowledge:Patient Access, Provider Access, Payer-to-Payer, Prior Authorization requirements Da Vinci FHIR IG experience:PDex, CDex, PAS (Prior Authorization), HRex, DTR (Documentation Temp