Contact person: Business Client

Phone:Show

Email:Show

Location: Ladera ranch, United States

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"am looking for a developer who can build a fully custom voice-based AI agent using the OpenAI Realtime API, similar to an interactive voice assistant (not text-based).

My company is an HVAC/Plumbing/Electrical home services business, and this AI will act as a virtual specialist that:

Speaks in real-time using OpenAI voice

Listens and responds naturally

Performs lead qualification

Performs HVAC/Plumbing repair triage

Explains our service plans

Collects contact information

Creates lead records

Books appointments

Sends lead data to backend

Uses custom tool-calling logic

I already have:

✔ Full system prompts
✔ Full conversation scripts
✔ Full flowchart logic
✔ Tool specifications
✔ A backend skeleton (Node.js + Express)
✔ A frontend widget skeleton (HTML/JS/CSS)
✔ Full folder structure delivered

You will be building the live, working voice agent on top of this package.

Requirements:

You MUST have experience with:

OpenAI Realtime API

WebRTC or WebSockets

Streaming audio in/out of browser

Node.js backend

Tool calling / function calling

Integrations with REST endpoints

Nice-to-have experience:

CRM integration (HubSpot / Sheets / GoHighLevel)

Speech barge-in handling

Real-time captions

Deployed examples of voice AI agents

What You Will Build:
1. Frontend (Modify existing files):

Connect “ Talk to GFlo” button to OpenAI Realtime API

Handle microphone/audio streaming

Display live captions (optional)

2. Backend (Using existing Express app):

Implement tool endpoints:

/api/service-area

/api/lead

/api/membership-rate

/api/appointment

And:

Create token generation endpoint for Realtime if needed

Connect frontend audio → OpenAI → backend tools

3. Voice Agent Logic:

System prompt already provided.
You ensure correct tool-calling behavior.

4. Output:

A fully working, deployed GFlo branded voice agent.

Deliverables:

✔ Working frontend widget (connects to Realtime)
✔ Working backend (tool endpoints integrated)
✔ Full audio conversation live in browser
✔ Code uploaded to GitHub or ZIP
✔ Deployment instructions
✔ 7–14 day delivery preferred
To Apply, Send:

A voice AI or Realtime project you’ve built

Your experience with WebRTC

Your experience with Node.js tool-calling

Estimated price

Estimated delivery time" (client-provided description)