About the role

Role Overview

Apex Systems is hiring two mid-level Mobile Developers to support backend infrastructure modifications that directly affect mobile applications. The work focuses on the decommissioning of WebSphere services currently integrated with mobile apps, collaborating with existing mobile teams to ensure a smooth transition.

Responsibilities

Analyze current mobile app integrations with backend services (architecture and dependencies)
Identify hook points where WebSphere services are invoked in the apps
Remove and decommission WebSphere service calls with minimal application disruption
Perform comprehensive testing and validation to ensure stability and performance post-removal
Collaborate with mobile teams on modernization efforts (e.g., bill pay and Zelle integrations)
Document changes and provide technical support during migration
Stay current with mobile development trends and best practices

Requirements

iOS: 3–5 years experience with Xcode and CocoaPods; MVVM, SwiftUI, Combine, and reactive programming
Android: 3–5+ years experience with Android Studio and Gradle; MVVM, Kotlin, RxJava, and reactive programming
Experience integrating mobile apps with web services / cloud platforms
Exposure to infrastructure-heavy environments and backend service integrations

Preferred

Apps published to the App Store (iOS or Android)
Experience with payment platforms
Familiarity with WebSphere services

Location / Work Model

Based in San Antonio, Texas
Remote flexibility within the United States

About AgileGrid Solutions

Apex Systems is a global IT services provider offering technology solutions and staffing services across many industries. The company focuses on helping clients modernize operations through innovative tech and expert talent, while promoting a culture of collaboration, continuous learning, and inclusion.

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