Ahmed Aly is a Technical Lead with 15+ years of experience in multinational top companies building high-performance, scalable software and ML/AI systems — the kind of software where a garbage collector pause is unacceptable, a Python loop that should have been a NumPy kernel becomes a production incident, and "it works on my machine" is not a shipping standard.

He has conducted more than 1,000 technical interviews for systems and ML/AI engineering roles and has seen the same gaps appear again and again. This book is written from the interviewer's side of the table.