AI Receptionist SaaS Development

Project Title: AI Receptionist SaaS – Voice AI + Appointments + WhatsApp

We are looking for an experienced developer/team to build a complete multi-tenant AI Receptionist SaaS, initially for clinics/doctors.

Required Features:
• AI answers incoming calls naturally like a real receptionist
• English + Hindi + Bengali
• Low-latency real-time voice with interruption/barge-in
• Custom AI voice, greeting, FAQs, doctors, services, fees & timings for each clinic
• Collect patient name, mobile, requirement, doctor & preferred time
• Book / reschedule / cancel appointments
• Doctor-wise availability with no double booking
• Human call transfer
• Call recording, transcript & AI summary
• WhatsApp confirmations and reminders
• Google Calendar + Google Sheets integration
• Patient/enquiry CRM
• Clinic Web/PWA dashboard
• Super Admin dashboard
• Multi-clinic / multi-tenant SaaS
• Subscription plans, AI-minute limits & extra-minute billing
• Razorpay/payment integration
• Reports & analytics
• Roles & permissions
• Android/iOS app option
• White-label/reseller option
• Secure database, backups, audit logs & tenant isolation
• Modular telephony/AI architecture so providers can be changed later
• Exotel/SIP/Twilio or suitable India telephony
• OpenAI/Sarvam/Deepgram or suitable STT/TTS/LLM

Important:
We require 100% source-code ownership, Git repository, database, APIs, server/cloud accounts and third-party accounts under our ownership.

No developer-controlled server, hidden admin, backdoor or permanent dependency.

Please provide:
1. Previous Voice AI / AI Receptionist demo
2. Recommended technology stack
3. Recommended telephony + AI providers for India
4. Expected AI-call latency
5. Estimated third-party cost per calling minute
6. Development timeline
7. Fixed total project cost
8. Milestone-wise quotation
9. Separate cost for Web/PWA and Android/iOS
10. Post-launch bug support/warranty

Please apply only if you have relevant Voice AI / VoIP / SaaS / telephony integration experience.