System Design Interview Questions: A Handy Collection

2026-05-21 · Source: KDnuggets · Field: Technology & Digital — Software Development & Engineering, Cloud Computing & IT Infrastructure · Depth: Intermediate, medium

Summary

The article, published on May 21, 2026, by Abid Ali Awan for KDnuggets, presents 10 GitHub repositories designed to help engineers prepare for system design interviews. It emphasizes that system design remains a critical, non-replaceable skill despite AI's code generation capabilities, requiring experience, trade-offs, and engineering judgment. The curated list includes resources like "donnemartin/system-design-primer" for structured approaches, "checkcheckzz/system-design-interview" for interview-focused questions, "ByteByteGoHq/system-design-101" for visual explanations, and specialized guides such as "weeeBox/mobile-system-design" for mobile and "greatfrontend/awesome-front-end-system-design" for frontend roles. These repositories offer primers, real interview questions, visual aids, step-by-step learning paths, and curated resource lists to strengthen fundamentals and practice problem-solving for scalable, reliable, and efficient system design.

Key takeaway

For software engineers preparing for system design interviews, you should prioritize structured learning and practical application over rote memorization. Utilize curated GitHub repositories like those listed to build foundational knowledge, practice real interview questions, and understand trade-offs. Focus on resources that align with your learning style or specific role, such as mobile or frontend, to enhance your problem-solving instincts and articulate design decisions effectively.

Key insights

System design remains a critical, non-replaceable skill in technical interviews, demanding structured thinking and practical preparation.

Principles

• System design requires experience and judgment.
• Structured communication is key in interviews.
• Visual explanations aid complex system understanding.

In practice

• Use "donnemartin/system-design-primer" for fundamentals.
• Explore "ByteByteGoHq/system-design-101" for visual learning.
• Consult "weeeBox/mobile-system-design" for mobile roles.

Topics

• System Design Interviews
• GitHub Repositories
• Distributed Systems
• Mobile System Design
• Frontend System Design
• Interview Preparation
• Scalable Systems

Code references

• donnemartin/system-design-primer
• checkcheckzz/system-design-interview
• ByteByteGoHq/system-design-101
• karanpratapsingh/system-design
• ashishps1/awesome-system-design-resources

Best for: Software Engineer

Related on AIssential

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• Fundamentals before tools — True software engineering prioritizes understanding fundamentals and business requirements over mere tool proficiency.
• AI for Frontend Developers — Day 69 — AI applications evolve into information management systems, making robust conversation organization essential for usability and scalability.

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Editorial summary, takeaway, and curation by AIssential. Original article published by KDnuggets.