E-commerce Site and App Development

I'm looking for an experienced developer to create a comprehensive e-commerce website and mobile app compatible with both iOS and Android.

Key Requirements:
- User-friendly e-commerce platform
- Mobile app with push notifications, in-app purchases, and social media integration

Ideal Skills and Experience:
- Proven track record in developing e-commerce websites and mobile apps
- Expertise in both iOS and Android platforms
- Strong knowledge of integrating push notifications, in-app purchases, and social media features

Please provide examples of previous work and a detailed proposal. Looking forward to your bids!