E-Learning Android App Development

I'm looking for experienced Android app developers to create an e-learning application. The app should provide a comprehensive learning experience with the following key features:

- Video Lessons
- Quizzes and Assessments
- Progress Tracking
- Additional features to enhance learning experience

Ideal skills and experience:
- Proficiency in Android app development
- Experience with e-learning platforms
- Strong UI/UX design skills
- Knowledge in integrating video content and assessment tools
- Familiarity with progress tracking mechanisms

Please provide examples of similar work done and your approach to this project.