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Welcome To The System Design Journey

May 16, 2025

Thank you for subscribing to The System Design Newsletter
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The System Design Newsletter

Hey there,

Welcome to the system design journey - it’s wonderful to have you here.

My goal with this newsletter is to do 2 things for you:

  1. Identify the most important system design content

  2. Simplify the complex system design concepts via visuals and share them

It can be a struggle to stay ahead of the curve when it comes to system design skills. Do you want to upskill in software architecture? Are you preparing for a system design interview to land your dream job? Do you have trouble understanding technical discussions at work?

Don’t worry, I’ve got your back.

I dedicate 7 hours a week to craft content for this newsletter.

To make sure you get the emails, please move this email to your “Primary” inbox. If you skip this step, you might not get any of my emails in the future. I think that would make both of us very sad.

I spend a significant amount of time doing this research for you, so I'd rather have it land in your inbox.


If you're in the mood, some of the popular posts are:

8 Reasons Why WhatsApp Was Able to Support 50 Billion Messages a Day With Only 32 Engineers

8 Reasons Why WhatsApp Was Able to Support 50 Billion Messages a Day With Only 32 Engineers

Neo Kim
·
August 27, 2023
Read full story
How Uber Computes ETA at Half a Million Requests per Second

How Uber Computes ETA at Half a Million Requests per Second

Neo Kim
·
December 3, 2023
Read full story

System Design Playbook:

You can download my playbook for system design here.

System Design Template:

You can download the powerful template to approach system design here.

Leetcode Interview Template:

You can download the powerful template to approach Leetcode interviews here.


I organized all posts on a single page to help you catch up quickly:

  • GitHub Frontpage

Thanks again for being here - I'm excited to share everything I learn about system design with you!

Neo Kim 25d
Hi, I’m Neo. I am a software developer who is passionate about sharing knowledge. On my Substack you'll find: Actionable tips to help you crack system design interviews. Simplified real-world software architectures to help you become good at work. System design fundamentals to help you better understand technical discussions at work. If you are fascinated by system design, please say hi!

I’d also love to connect on LinkedIn | Twitter | YouTube \ Threads | Instagram if you are on there. And if you're feeling generous, reply to this email to let me know how you found out about the newsletter.


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© 2025 Neo Kim
548 Market Street PMB 72296, San Francisco, CA 94104
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