Contact person: Business Client

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Location: Bengaluru, India

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"We are looking for an experienced freelancer/team to build an AI Voice Agent SaaS similar in functionality to Bolna AI (business-focused, not developer API platform).
The product will act as an AI receptionist that answers incoming phone calls, understands caller intent, responds using AI voice, books appointments, sends WhatsApp follow-ups, and transfers calls to humans when required.
This is a paid MVP project with potential for long-term work.
CORE REQUIREMENTS
Telephony
• Integrate Exotel for inbound calling
• Handle incoming calls via webhook/XML
• Play AI-generated voice responses
• Support call transfer to human number
• Call recording & logs

AI & Voice
• Speech-to-Text (Whisper / Deepgram)
• OpenAI GPT-4 / GPT-4o for conversation,
• Text-to-Speech (Azure / Google / ElevenLabs)
• Natural, short, business-friendly responses
• Prompt-based agent behavior

Call Flow & Automation
• AI greeting
• Intent detection (appointment, pricing, support, human)
• Appointment booking logic
• End-call or human escalation
• n8n workflow orchestration (preferred)

WhatsApp Integration
• Send call summaries
• Appointment confirmation messages
• Missed call follow-ups
• WhatsApp Cloud API / Gupshup

Dashboard (MVP)
• Login & authentication
• Simple business profile setup
• Agent configuration (greeting, business hours)
• Call logs & summaries
• Usage view (minutes)

SaaS & Billing
• Monthly subscription logic
• Usage-based limits (call minutes)
• Razorpay or Stripe integration (MVP-level)

TECH STACK (PREFERRED)
• Backend: Node.js / Express / Fastify
• Automation: n8n (self-hosted or cloud)
• AI: OpenAI APIs
• Telephony: Exotel
• Frontend: [login to view URL] / React
• Database: PostgreSQL / Supabase
• Hosting: VPS (AWS / Hetzner / DigitalOcean)

MVP DELIVERABLES
• Working AI voice agent answering calls
• Exotel number integration
• WhatsApp follow-up messages
• Admin dashboard
• Deployment + basic documentation
• Source code ownership" (client-provided description)