Cross-Platform Admob Rewarded Video Integration

I'm in need of a professional to integrate Admob rewarded video ads into my app, on both Android and iOS. This integration should trigger the ad when a specific in-app action is completed.

Key Requirements:
- Integrate Admob's rewarded video ads on both Android and iOS platforms
- Trigger the ad only when a pre-defined in-app action has been completed

Ideal Skills and Experience:
- Strong experience with Admob's rewarded video ads
- Proven expertise in cross-platform mobile development, specifically Android and iOS
- Previous work on triggering ads based on specific in-app events

I look forward to hearing from professionals who can deliver quality work efficiently.