Integrate more slot AdMob Interstitials on my Flutter App

I'm looking for a skilled Flutter developer to integrate AdMob into my app. Specifically, I need Interstitial ads incorporated throughout the app.

Key Requirements:
- Integrate Interstitial ads at the following points:
- After completing a level
- After using a special feature
- At the start of the app
- Utilize my existing AdMob account for this integration

Ideal Skills:
- Proficient in Flutter
- Prior experience with AdMob integration
- Understanding of ad placement strategy for user engagement without disrupting app flow

Please bid if you can deliver an effective integration.