Android App Developer for Ad Implementation

I'm seeking an Android app developer who is well-versed with implementing various types of ads into mobile applications. Specifically, I'm looking to include banner, interstitial, and video ads, to maximize revenue and user engagement.

Key Requirements:
- Proficiency in Android app development
- Previous experience implementing banner, interstitial, and video ads into apps
- Familiarity with ad networks like Facebook Audience Network, liftoff, mintegral, inmobi, and Applovin

Your responsibilities will include:
- Integrating the specified ad types seamlessly into the app
- Ensuring the ads are displayed at appropriate times and do not disrupt user experience
- Carrying out testing to guarantee the ads are functioning correctly
- Optimization of ad placements for improved performance

Please include relevant examples of your previous work and specific experience with the mentioned ad networks in your proposal.