Secure Client Appointment Portal Development

I need a web-based portal that lets my clients book and manage their appointments while keeping their data safe. Two-factor authentication is non-negotiable, so the login flow must request a second verification step after the usual username-and-password combo... (Budget: $2000 - $6000 HKD, Jobs: Django, HTML, Laravel, Node.js, PHP, Security, Vue.js, Web Development)