Zillow-Style Real Estate Platform Development

I'm looking for an experienced developer to create a modern and sleek real estate platform, similar to Zillow, that operates on Web as well as both iOS and Android.

Key features include:
- Buy, Sell & Rent options
- Property search by filters: Number of Rooms, Size, Location
- No public history integration (all info entered by listing agent)
- "Find Agent" option
- Login for both listing agents and end-users (buyers/renters)

Ideal skills and experience:
- Proficiency in mobile and web app development
- Experience with modern UI/UX design
- Strong background in real estate platforms is a plus
- Knowledge of secure login systems and database management

Looking forward to your proposals!