Web-Based Game Development

I'm seeking an experienced game developer to help build web-based games encompassing puzzle, adventure, and strategy genres. for an online site and help finish coding the site to be published

The game should include:
- Multiplayer mode
- Leaderboards
- In-game purchases
- Tournaments

Ideal skills and experience:
- Proficiency in web-based game development
- Strong background in game mechanics, especially in multiplayer environments
- Experience with integrating in-game purchases and setting up leaderboards
- Knowledge of tournament structures and functionalities
- Coding web-based real money gaming platform
- GitHub
Please provide a portfolio showcasing similar projects.