---
title: "Discussion on \"I Built 15 System Designs on Paper and Still  \nFailed My First Interview. Here's What Actually  \nFixed It.  \" | Hashnode"
description: "Discussion on \"I Built 15 System Designs on Paper and Still  \nFailed My First Interview. Here's What Actually  \nFixed It.  \". knew the theory, still failed my system design interview.Here are the real mistakes that cost me-and how to avoid them in yours."
url: "https://hashnode.com/posts/i-built-15-system-designs-on-paper-and-still-failed-my-first-interview-here-s-what-actually-fixed-it/6a59cc2e304df2e6c816cb85"
---

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# [I Built 15 System Designs on Paper and Still Failed My First Interview. Here's What Actually Fixed It.](https://scaledojo.hashnode.dev/i-built-15-system-designs-on-paper-and-still-failed-my-first-interview-here-s-what-actually-fixed-it?utm_source=hashnode&utm_medium=feed)

knew the theory, still failed my system design interview.Here are the real mistakes that cost me-and how to avoid them in yours.

Jul 17 · 6 min read · scaledojo.hashnode.dev  
Updated Jul 18  
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-   [#system-design-interview](https://hashnode.com/tag/system-design-interview)
-   [#interview-mistakes](https://hashnode.com/tag/interview-mistakes)
-   [#system-design-mistakes](https://hashnode.com/tag/system-design-mistakes)
-   [#tech-interview-prep](https://hashnode.com/tag/tech-interview-prep)
-   [#software-engineer-interview](https://hashnode.com/tag/software-engineer-interview)

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[sanhita dawn](https://hashnode.com/@sanhitadawn)

@sanhitadawn

  
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