E-Commerce App Development for iOS and Android

I am looking to develop a cross-platform E-Commerce application for iOS and Android. The primary goal of this app is to engage new clients and keep the existing ones entertained and satisfied.

Key Features:
- Social Networking Aspects: The app should incorporate key social networking features, particularly focused on engaging new clients. This could involve interactive elements that draw in potential customers and keep them invested in our brand.
- User Engagement: The app will primarily use push notifications as a method of user engagement. This is crucial for attracting new clients and retaining existing ones. The ideal freelancer should have experience in integrating and optimising push notifications within an app.

Ideal Skills and Experience:
- Proven experience in developing E-Commerce apps for both iOS and Android.
- Strong understanding and experience with integrating social networking features within apps.
- Proficiency in implementing and optimising push notifications for user engagement.
- Knowledge of cross-platform app development tools and techniques.

Please provide examples of similar projects you've completed in your proposal.