Web Designer & 3D Developer Needed – Premium AI Tech Agency Website with Live Voice Demo & Immersive Scroll Experience

I'm building a next-generation tech agency that helps businesses implement cutting-edge technology — starting with AI voice automation. I need a world-class website that not only looks incredible but features a live, interactive AI voice demo so visitors can experience the technology firsthand before ever speaking to me.
The brand name is still being finalised, but the vision is clear: a site that feels like it's from the future — but simple enough that anyone can use it.

The Hero Feature
The centrepiece of the website should be a live AI voice demo where visitors can actually call or interact with an AI voice agent directly on the page. My strong preference is Retell AI integration as it is the platform I use for my actual business — so the demo would be a real representation of what I offer clients. If Retell AI isn't feasible, the next preference is ElevenLabs, and if neither are possible I'm open to other alternatives — but Retell is the priority. Think of it like an interactive product demo that sells itself.

3D & Scroll Experience
I'd love to explore an immersive 3D scroll experience — for example, a 3D AI brain or neural network that animates and reacts as the user scrolls down the page, visualising the AI in action. I'm open to the designer's creative interpretation of this — if you have a better idea that achieves the same "wow" effect, pitch it to me.

Design Vision
The one non-negotiable: despite the cool visuals, the site must feel simple, clear and approachable. My target clients include trades businesses like plumbers and electricians who aren't tech-savvy. Nothing should feel confusing or overwhelming.
Built to be flexible — as new technology emerges, the site should be easy to update and repurpose beyond just AI voice.

Requirements

Strong portfolio of modern, high-end websites — please include links
Must have experience with 3D design and scroll-based animations
Experience with interactive or demo-driven websites a big plus
Experience with Retell AI or ElevenLabs integration a significant advantage
What timeframe would you need to complete this project?