Modern Social Networking Site & App

I'm embarking on a thrilling venture to create a new social networking site and app. It aims to embody a modern and elegant design, while incorporating a range of essential features.

Key Features:
- User profiles and friend connections
- Messaging and chat functionality
- Private and group chat rooms
- News feed and content sharing
- Interactive elements like posting, commenting, liking, upvoting and downvoting

Ideal Skills and Experience:
- Proficiency in UI/UX design, particularly in modern minimalist aesthetics
- Extensive experience in developing social networking platforms
- Strong skills in implementing interactive features
- Excellent understanding of user profiles and chat functionalities

I'm looking for an affordable freelancer who can translate this vision into a functional and engaging social networking site and app.