Learning Management System (LMS) Development with Source Code

I'm looking for a Learning Management System (LMS) tool that primarily supports video-based courses. The LMS should come with source code and include the following key features:

- Quiz Integration
- Progress Tracking
- Certification Upon Completion

Additionally, the LMS should accommodate two user roles: Students and Administrators.

Ideal Skills and Experience:
- Experience in developing LMS platforms
- Proficiency in video content integration
Youtube Content Integration
Test Integration With Marks
Indian Payment Gateway Integration
Mobile App
- Strong knowledge of quiz and progress tracking functionalities
- Ability to provide source code
- Familiarity with user role management in educational platforms

Please provide samples of previous work and ensure the solution is scalable and secure.