Senior iOS Application Engineer

Position Overview:

·       The Senior iOS Application Engineer / Consultant will support the design, development, enhancement, integration, testing, deployment, and production support of the E-Citations mobile application.

·       The consultant will work closely with Product, Engineering, Architecture, Cybersecurity, Infrastructure, and business stakeholders to deliver secure, reliable, high-performance functionality for field operations.

·       This role requires deep hands-on .NET MAUI/iOS engineering expertise, strong problem-solving skills, and the ability to independently deliver complex application enhancements within an enterprise environment.

Key Responsibilities:

·       Design, develop, enhance, and support the E-Citations iOS application using .NET MAUI and C#.

·       Build secure, scalable, high-performance mobile functionality using .NET MAUI, XAML, and native iOS APIs where required.

·       Develop offline-first capabilities, including local storage, caching, background synchronization, retry logic, conflict resolution, and offline/online reconciliation.

·       Integrate securely with REST/GraphQL APIs, .NET backend services, Azure services, relational databases, and enterprise systems.

·       Develop and support Bluetooth/BLE integrations, including Zebra ZQ-series mobile printers, connection recovery, and printer staterror handling.

·       Implement camera, photo capture, barcode scanning, OCR, document scanning, and identity-related workflows using .NET MAUI and native iOS capabilities.

·       Implement secure authentication and data protection using OAuth 2.0, OIDC, JWT, Keychain, encryption, certificate pinning, and secure local storage.

·       Develop responsive, accessible, field-friendly interfaces optimized for rapid operational workflows.

·       Perform unit, integration, regression, UI, and performance testing; troubleshoot application, connectivity, integration, and production issues.

·       Support CI/CD, automated builds, provisioning, code signing, release workflows, telemetry, and production support.

·       Participate in Agile delivery, estimation, code reviews, demonstrations, and release planning.

·       Maintain technical documentation for developed functionality, integrations, deployment, and operational support.

Required Skills & Experience

·       Extensive hands-on experience developing enterprise mobile applications using .NET MAUI and C# for iOS.

·       Strong experience with XAML, .NET MAUI Community Toolkit, .NET MAUI Essentials, MVVM, Clean Architecture, and dependency injection.

·       Experience building offline-first mobile applications using SQLite, local caching, synchronization, retry, and conflict-resolution patterns.

·       Hands-on experience with Bluetooth/BLE and Zebra mobile printers, preferably including Zebra ZQ-series printers and Zebra SDK integration.

·       Strong experience integrating mobile applications with REST/GraphQL APIs, .NET/ASP.NET Core services, Azure, SQL Server, and Azure SQL.

·       Experience integrating .NET MAUI applications with native iOS frameworks and platform-specific APIs where required.

·       Strong knowledge of enterprise security including OAuth, OIDC, JWT, Keychain, encryption, certificate pinning, and application hardening.

·       Experience with enterprise MDM platforms such as Microsoft Intune, Workspace ONE/AirWatch, or Jamf.

·       Strong experience with Git, GitHub/GitLab, CI/CD, Jenkins/Bitrise, automated testing, provisioning and signing.

·       Knowledge of App Store Connect, APNs, telemetry, crash reporting, diagnostics, and application monitoring.

·       Strong troubleshooting, collaboration, and independent execution skills within complex enterprise environments.

Preferred Experience

·       Experience supporting public-sector, public-safety, transportation, enforcement, citation, or field-workforce applications, particularly solutions involving mobile printing, offline operation, secure enterprise integration, and mission-critical field usage.