Music App for Android and iOS

I am looking for a developer to create a Music App for Android and iOS. The app should have the following features and specifications:

Features:
- Playlist creation and management
- Offline playback
- Social media integration

Music Streaming Service:
- The app should integrate like Spotify/Gaana, etc for seamless music streaming experience.

Additional Functionalities:
- No additional functionalities such as lyrics display or concert information are required.

Skills and Experience:
- Previous experience in developing music apps for Android and iOS
- Proficiency in integrating Spotify API
- Strong knowledge of mobile app development frameworks and languages such as Java, Swift, or React Native
- Familiarity with social media integration and offline playback features
- Attention to detail and ability to deliver a user-friendly interface

Please provide examples of your previous work and relevant experience in your proposal. Thank you.