Jili Game API Integration in Vue PHP Site

I'm looking for a skilled developer to integrate the Jili game API into my Vue PHP game website. The key features to integrate include the leaderboard and in-game purchases.

Key Requirements:
- Implementing the leaderboard feature.
- Setting up in-game purchase options.
- Integrating user authentication with the Jili game API.

The ideal candidate should have:
- Proven experience with API integrations, particularly with gaming APIs.
- Strong skills in Vue.js and PHP.
- Understanding of implementing game-specific features like leaderboards and in-game purchases.
- Experience with setting up user authentication systems.

Please note, while I have not specified which user authentication methods to support, the integration must be compatible with a range of common methods, including username and password, social media login, and email verification.