Mobile Developer

Duration: 3+ months Location: Philadelphia, PA (On-site 5 days/week) Lead the modernization of the FacilityFit Pro (FFP) mobile platform supporting critical healthcare operations across iOS and Android. Drive the migration from Xamarin.Forms to .NET Multi-platform App UI (.NET MAUI), strengthen enterprise mobile security, and mentor developers while delivering reliable applications used daily by frontline healthcare teams. Requirements: Demonstrated experience migrating Xamarin.Forms applications to .NET Multi-platform App UI (.NET MAUI). Senior-level experience developing enterprise mobile applications with C#. Experience implementing Mobile Single Sign-On (SSO) using OpenID Connect (OIDC), OAuth 2.0, and Microsoft Entra ID. Responsibilities: Lead development of cross-platform mobile applications for iOS and Android. Modernize Xamarin.Forms applications through migration to .NET MAUI while preserving business functionality. Design secure authentication using Mobile SSO, Multi-Factor Authentication (MFA), secure credential storage, and enterprise identity services. Develop offline capabilities, synchronization, REST API integrations, and mobile workflows supporting healthcare operations. Mentor developers through architecture reviews, code reviews, engineering standards, and technical coaching. Support application releases through TestFlight, Google Play, Mobile Device Management (MDM), quality assurance, user acceptance testing, and production deployments. 26-00730