Mobile Casino Gaming Site Development

I'm seeking an experienced web developer to create an online gaming website focused on casino games. The site must be mobile-optimized and include the following features:

- Leaderboards
- User profiles
- In-game chat

Ideal Skills and Experience:
- Expertise in mobile-responsive web design
- Experience with gaming websites, particularly casino games
- Proficiency in implementing user profiles and leaderboards
- Strong knowledge of in-game chat functionalities
- Background in security measures for online gaming platforms

Please provide a portfolio showcasing relevant projects. Something similar to https://1xbetspin.com/en or https://bc.game/