Betting Website Backend Development

I need a robust backend for a betting website.

Key Requirements:
- Support various betting activities: sports, casino, and esports.
- Secure user authentication: email/password, social media logins, two-factor authentication.
- Preferred database: MySQL.

Ideal Skills & Experience:
- Expertise in backend development for betting or gaming platforms.
- Proficiency in MySQL.
- Strong knowledge of implementing secure authentication methods.
- Experience with scalable architecture design.

Please provide your portfolio and relevant project experience.