Our Team

Engineers and experts building the future of Voice AI education.

Misal Azeem

Misal Azeem

Voice AI Engineer & Creator

Building production voice AI systems and sharing what I learn. Focused on VAPI, LLM integrations, and real-time communication. Documenting the challenges most tutorials skip.

Expertise

VAPIVoice AILLM IntegrationWebRTCNode.js
Afshan Gilani

Afshan Gilani

CEO & Marketing Expert

Driving growth and strategy at CallStack.tech. Passionate about connecting innovative AI solutions with businesses that need them. Expert in marketing, sales, and business development.

Expertise

MarketingSalesBusiness StrategyGrowthPartnerships

Why CallStack.tech?

We spent months learning voice AI by piecing together scattered blog posts, incomplete docs, and outdated tutorials. Every implementation had edge cases the tutorials never mentioned. Every integration broke in production.

This site is what we wish existed when we started. Real code. Real challenges. Real solutions. No fluff, no "hello world" examples that fall apart under load.

We're documenting the production lessons most tutorials skip, because that's where the real learning happens.

Questions or Feedback?

Found an error in a tutorial? Have a topic request? Or just want to chat about voice AI?

Get in Touch