On-Call Support for Mobile App Maintenance -- 2

I am looking for a reliable, on-call support professional to maintain our four native mobile applications. The apps are two Android ones (Customer and Driver) developed in Java, and two iOS ones (Customer and Driver) developed in Swift.

Your primary responsibilities will include:
- Troubleshooting: Identifying and resolving issues that may arise
- Implementing updates: Ensuring the app functionality is smooth across both platforms

Ideal candidates should have:
- Excellent troubleshooting skills
- Technical skills like MQTT, FCM, Maps API, Android (Java and/or Kotlin) Native Development, iOS (Swift) Native Development
- A strong background in mobile app development, deployment and maintenance lifecycle