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Job Description We are seeking a high-velocity Full-Stack [login to view URL] & Voice AI Engineer to build an Minimum Viable Product (MVP) similar to [login to view URL] and Joyz.ai. The goal is to create a lightweight, unified sales & support workspace that enables businesses to run real-time AI Voice Telephony (Inbound/Outbound) and Automated WhatsApp/Instagram Chatbots, with all leads aggregated into a Unified Inbox & Lead Management Dashboard. Technical Strategy: To keep development costs and setup time low, we are NOT building voice orchestration or speech models from scratch. We are using [login to view URL] (or Retell AI) for latency-optimized voice execution, connected via webhooks to a [login to view URL] + Supabase web dashboard. Core Scope of Work (MVP) 1. AI Voice Telephony Module ([login to view URL] / Retell AI Integration) Outbound Campaign Launcher: Ability to upload a CSV of leads (Name, Phone Number, Context/Product) and trigger automated outbound AI voice calls via [login to view URL] / Retell AI. Inbound Call Handling: Connect an inbound SIP line (Twilio or Exotel) to a pre-prompted Vapi/Retell AI voice bot. Real-Time Webhook Processing: Capture call status, call recordings, audio transcriptions, and automated summaries generated by the LLM (gpt-4o-mini / Claude 3 Haiku). 2. Multi-Channel Chat Module (WhatsApp & Instagram) Integrate Meta WhatsApp Cloud API (or ManyChat/WATI API) to send automated responses, handle FAQs, and qualify leads based on intent. Comment-to-DM or Inbound Trigger: Basic automated workflow that captures incoming WhatsApp/Instagram messages and routes them through OpenAI API to reply instantly. 3. Unified Inbox & CRM Workspace ([login to view URL] Front-End) Unified Conversations View: A single dashboard screen displaying ongoing/past interactions across Voice Calls, WhatsApp, and Instagram. Contact & Lead Pipeline: Simple lead table with status tags (e.g., Hot Lead, Follow-up Required, Not Interested, Closed), call recordings, and summary notes. Knowledge Base / System Prompt Manager: A section where admins can paste text/Upload PDFs to update the AI agent's business context. Technical Stack Requirements Front-End / Back-End: [login to view URL] (React), TypeScript, Tailwind CSS, App Router Database & Auth: Supabase (PostgreSQL, Supabase Auth, Webhooks) Voice Engine: [login to view URL] or Retell AI API Telephony Provider: Twilio or Exotel (SIP Trunking) LLM Engine: OpenAI API (gpt-4o-mini) / Anthropic Claude API Messaging: Meta WhatsApp Cloud API / Webhooks Deployment: Vercel (Free/Hobby tier) Strict Project Constraints & Exclusions (Out of Scope) To keep this build within strict cost and time limits, DO NOT quote for: Building custom WebRTC, FreePBX, or native Speech-to-Text/Text-to-Speech models from scratch (must use Vapi/Retell). Complex multi-tenant billing/subscription system (Single account/Admin setup only for MVP). Complex custom mobile applications (Web Dashboard optimized for desktop/mobile browsers only). Milestones & Payment Structure Milestone 1 ($400): Architecture Setup, Supabase DB, and [login to view URL] / Retell AI Outbound & Inbound Voice Calling Webhooks. Milestone 2 ($400): WhatsApp Cloud API integration & Multi-channel message processing pipeline. Milestone 3 ($400–$700): [login to view URL] Unified Inbox UI, Lead Management Table, Knowledge Base Prompt Manager, and Deployment to Vercel. How to Apply Please submit your proposal with: Proof or links to previous builds using [login to view URL], Retell AI, or Next.js. Confirm that you can deliver this project within a 3 to 4-week timeline. Include the word "ORCHESTRATE" at the very top of your bid so I know you read the entire project description.
Project ID: 40615029
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147 freelancers are bidding on average $1,149 USD for this job

I have extensive experience building AI driven communication platforms using Next. js and Supabase. I am ready to build your MVP for the AI Voice and WhatsApp Sales Agent Platform. I have successfully integrated Vapi and Retell AI for low latency voice interactions and handled complex WhatsApp automation via the Meta Graph API. My background includes managing real time state with Supabase and implementing webhooks for seamless data flow between voice agents and messaging triggers. I focus on high velocity development while ensuring clean Typescript code and responsive Tailwind CSS layouts. I am familiar with the nuances of SIP and real time media streaming required for this project.
$750 USD in 7 days
2.9
2.9

i have a proof of concept with similar requirements، lets get on chat and discuss this، i have 14 years od experience as a cto and full stack dev، ai is my left hand game، lets talk
$1,125 USD in 7 days
0.0
0.0

Hyderabad, India
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Member since Mar 27, 2025
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