Comprehensive LMS & App Development for Language School

I'm seeking an experienced developer to create a robust Learning Management System (LMS) and a cross-platform app for my online language school.

The LMS should:
- Track student progress
- Host live classes
- Manage course content

The app should be available on iOS, Android, and Web, featuring:
- Interactive quizzes
- Discussion forums
- Gamification elements to boost student engagement

Ideal Skills & Experience:
- Expertise in LMS development
- Proficiency in mobile and web app development
- Experience in integrating interactive and gamified elements
- Strong UI/UX design skills
- Background in education technology is a plus

Please provide examples of previous similar work and a timeline for project completion.