Gaming Tournament Platform Development

I'm looking for an experienced web developer to create a gaming tournament platform based on my concept. The platform will cater to both esports and casual gaming.

Key requirements:
- User registration and profiles
- Tournament scheduling and management

User roles:
- Players
- Organizers
- Spectators

Ideal skills and experience:
- Web development (front-end and back-end)
- Experience with user authentication systems
- Database management for tournament data
- UI/UX design for an intuitive user experience

Please provide a portfolio showcasing similar projects.