Contact person: Fix Google Sign-In Issue in React Native Expo App

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Location: Üsküdar, Turkey

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"Google Sign-In works fine on iOS but fails on Android (emulator + devices) in my Expo app.

Setup:

• React Native (Expo SDK)
• Firebase Authentication
• @react-native-google-signin/google-signin

Checked Already:

• SHA-1 matches Firebase
• Package name correct

Need: An experienced React Native + Firebase dev to fix Google Sign-In on Android so it works in both dev & prod builds.

If you’ve debugged OAuth flows in Expo before, this should be quick" (client-provided description)