EdTech Quiz Platform Development

I'm seeking an experienced web developer to create an EdTech platform for students in Class 6-10, covering ICSE and CBSE curricula.

Key Features:
- Daily math quiz, admin-uploaded
- ₹10 participation fee, 24-hour active
- Ranking based on correct answers & completion time
- Admin-determined rewards, Amazon vouchers
- User registration/login (name, email, password, phone)
- Secure payment integration via Razorpay
- Cloud-based database for user data

Ideal Skills & Experience:
- Web development expertise (frontend & backend)
- Experience with Razorpay integration
- Strong knowledge in cloud database management
- Familiarity with quiz/ranking systems

Looking for a clean, user-friendly interface and robust security. Please share your portfolio and relevant experience.