How to Pass System Design Interviews in 2026

Blog / How to Pass System Design Interviews in 2026

System design interviews are hard. We built a two-step process to make it simple.

1. Learn the Core Concepts

Core concepts are the building blocks that show up in every interview. They are easy to learn, but usually hard to find scattered across the internet.We solved that with the System Design Core Concepts.We curated the 34 specific questions you actually need to know. Once you learn these facts, you are ready for Step 2.

2. Practice the Common Questions

The best way to prepare is to practice the most commonly asked questions. We ordered our solutions by popularity so you can prioritize what matters.Crucially, every solution we provide follows the exact structure interviewers grade you on:

Functional Requirements
Non-Functional Requirements
Data Model
API Design
High-Level Design
Deep Dives

Practicing this way builds muscle memory. You will walk into the interview confident because you didn't just practice hard, you practiced right.

Bonus: The AI Whiteboard

Watching a video isn't enough to stand out. You need to simulate a real interview.We built an AI Whiteboard that walks you through real interview questions and grades your solution in real-time. Stop guessing if you are ready and get the feedback you need to improve now.