Sleek 3D App Promo Video

I'm seeking a skilled After Effects artist to create a professional and sleek promo video for my app. The video should highlight the user experience by showcasing:

- User navigating the app
- User receiving app benefits
- App notifications and alerts

Ideal skills and experience:
- Proficiency in After Effects
- Strong 3D animation skills
- Experience in creating professional promo videos
- Attention to detail and creativity

Please include samples of previous work in your bid.