About the Author

A solo engineer documenting the real-world challenges of building voice AI systems.

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.

🎯Areas of Expertise

VAPIVoice AILLM IntegrationWebRTCNode.js

Why CallStack.tech?

I spent months learning voice AI by piecing together scattered blog posts, incomplete docs, and outdated tutorials.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 I wish existed when I started. Real code. Real challenges. Real solutions. No fluff, no "hello world" examples that fall apart under load.

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

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Questions or Feedback?

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

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