Senior iOS Application Engineer-5908-1 at Tri-Force Consulting Services

Setup: Hybrid
Location: New York, New York
Type: Full-time, Contract
Level: senior
Posted: Aug 11, 2026

Description

The Senior iOS Application Engineer / Consultant will design, develop, enhance, test, deploy, and support the E-Citations mobile application in an enterprise field-operation environment. The role focuses on .NET MAUI and C# development, offline-first functionality, secure authentication and data protection, REST/GraphQL and Azure integrations, Bluetooth/BLE and Zebra printer support, camera and barcode workflows, CI/CD, and production troubleshooting. It is a hybrid position requiring three days on-site at 2 Broadway, MTA Headquarters, New York.

Required Skills

.NET MAUI
C#
XAML
Bluetooth/BLE
REST/GraphQL APIs
OAuth 2.0
CI/CD
Git

Additional Information

Required Previous Experiences: Extensive enterprise mobile application development using .NET MAUI and C# for iOS
Offline-first mobile application development with SQLite, caching, synchronization, retry, and conflict resolution
Bluetooth/BLE and Zebra mobile printer integration
Mobile application integration with REST/GraphQL APIs, .NET/ASP.NET Core, Azure, SQL Server, and Azure SQL
Integration of .NET MAUI applications with native iOS frameworks and platform-specific APIs
Enterprise MDM platform experience
Git, GitHub/GitLab, CI/CD, automated testing, provisioning, and signing
Public-sector, public-safety, transportation, enforcement, citation, or field-workforce application support
Preferred Qualifications: Experience supporting public-sector, public-safety, transportation, enforcement, citation, or field-workforce applications
Translation Company Name: MTA Headquarters