

Hi I’m Fahim
As a software engineer at Meta and Microsoft, I helped develop cloud-scale distributed systems, including Azure and Facebook storage.
In my 20+ years in tech, I have also personally led hundreds of System Design Interviews.
These are the resources I wish I could have given to candidates to guide them through the interview process.
The best part — it’s all 100% free.
I hope you find this handbook useful. Good luck with your interviews!
The System Design Handbook
- End-to-end System Design Interview mastery
- FAANG-approved best practices
- Real-world case studies & practice questions

Why are System Design Interviews such a big deal?
This might be controversial, but here it goes: System Design Interviews aren’t just a hoop to jump through.
They actually really matter. Here’s why
Your ability to reason through trade-offs is a huge predictor of on-the-job success.

There’s a reason why every top company today (especially FAANG) has a System Design loop of some kind. Trust me, it pays to be prepared.
Because they are so open-ended, SDI loops can be tricky for even the best software engineers.
But luckily there’s a way through.
Learn what interviewers are actually looking for
Get the offer
Demonstrate hireable skills and navigate your interview loops with confidence.
Avoid getting down-leveled
Maximize your comp package by getting hired at a higher starting level and salary.
Set yourself up for success
Learn System Design skills that will serve you for the rest of your career.
