Senior iOS Engineer – Hybrid, Offline-First & Secure Apps

ZealHire Inc.; New York (NY); Hybrid; USD 125,000 - 155,000; Full time

Job summary

ZealHire Inc. in New York seeks a Senior iOS Application Engineer to design, develop, and maintain the E-Citations mobile app using .NET MAUI and C#. The role emphasizes offline-first mobile capability, secure integrations with REST/ GraphQL backends, and collaboration with product, architecture, and security teams.

You will work on secure authentication, Keychain, and printer integrations (Zebra), delivering high-performance solutions in an enterprise setting with a hybrid work model in NYC.

Qualifications

• Extensive hands-on experience developing enterprise mobile apps with .NET MAUI and C# for iOS.
• Strong knowledge of XAML, MVVM, Clean Architecture, and dependency injection.
• Experience building offline-first apps using SQLite, caching, synchronization and conflict resolution.
• Experience with Bluetooth/BLE and Zebra printers; Zebra SDK integration is a plus.
• Strong integration with REST/GraphQL, .NET/ASP.NET Core services, Azure, SQL Server.
• Experience integrating MAUI apps with native iOS frameworks and security features.
• Security expertise: OAuth, OIDC, JWT, Keychain, encryption and certificate pinning.
• Experience with Git, CI/CD, automated testing, and provisioning.
• Familiarity with App Store Connect, telemetry, crash reporting and diagnostics.
• Ability to work independently within complex enterprise environments.

Responsibilities

• Design, develop, enhance, and support the E-Citations iOS app using .NET MAUI and C#.
• Implement offline-first functionality with local storage and sync.
• Integrate securely with REST/GraphQL, Azure, and enterprise backends.
• Support CI/CD, code signing, release workflows, and telemetry.
• Collaborate with product, security, and engineering stakeholders.

Skills

.NET MAUI

C#

XAML

MVVM

OAuth/JWT

Bluetooth/BLE

REST/GraphQL

Azure SQL

CI/CD

App Store Connect

Zebra SDK

Git

Tools

Zebra SDK

Git

Job description

ZealHire Inc. in New York seeks a Senior iOS Application Engineer to design, develop, and maintain the E-Citations mobile app using .NET MAUI and C#. The role emphasizes offline-first mobile capability, secure integrations with REST/ GraphQL backends, and collaboration with product, architecture, and security teams.

You will work on secure authentication, Keychain, and printer integrations (Zebra), delivering high-performance solutions in an enterprise setting with a hybrid work model in NYC.