AI Voice Assistant Developer Needed for Multi-Tenant SaaS Platform

We are looking for an experienced AI developer to help build and improve a multi-tenant AI voice-assistant platform. The system will handle inbound business calls, provide business-specific information, capture leads, schedule appointments, and store call transcripts and outcomes. The preferred stack includes Python, LiveKit, Node.js, Next.js, TypeScript, MongoDB, SIP/Twilio, Docker, and AWS or DigitalOcean. The developer should have experience with AI voice agents, API integrations, real-time communication, multi-tenant SaaS architecture, and production deployment. Please share any relevant voice-agent projects, demos, or GitHub examples with your proposal.