Senior iOS Application Engineer with net locals to NY/NJ)

Role: Senior iOS Application Engineer

Location: 2 Broadway, New York, NY (Hybrid - 3 days on site or as needed)

Duration: Long Term

F2F Interview at 2 Broadway, NY

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.

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 status/error 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.

.NET MAUI / C# iOS Application Development

iOS Platform Integration / Native iOS APIs

Offline-First Mobile Architecture & Synchronization

Bluetooth / BLE & Zebra Mobile Printer Integration

REST / GraphQL API & .NET Backend Integration

Mobile Security, Authentication & Encryption

Azure Services / SQL Server / Azure SQL Integration

Mobile Testing, Debugging & Performance Optimization

CI/CD, Code Signing, Provisioning & TestFlight

Camera, Barcode Scanning, OCR & Document Capture

Enterprise MDM - Intune / Workspace ONE / Jamf

MVVM, Clean Architecture & Modular Application Design

Mobile Telemetry, Crash Reporting & Production Support

Accessible / Field-Oriented Mobile UI Development

Git / GitHub / GitLab / Jenkins / Bitrise. Required Additional Skills:

Application Development - 6+ years of experience

Field Service - 6+ years of experience

Production - 6+ years of experience

Testing and Development - 6+ years of experience

Web Development/Design - 6+ years of experience

.NET Framework - 6+ years of experience

Visual Studio - 6+ years of experience

.NET Code Development - 6+ years of experience

Developing/Executing Test Plans - 6+ years of experience

GUI Design in a .NET Framework - 6+ years of experience

Product Development - 6+ years of experience

Rapid Prototyping System Development - 6+ years of experience

User Interface Design - 6+ years of experience

Wireless/Mobile Development - 6+ years of experience