Tech Interview Prep, Built by Ex-FAANG Hiring Managers

FAANG-engineer-led courses, mock interviews, and resume reviews.

Learn the patterns behind every system design and coding interview question, then practice with engineers who have been on the other side of the table.

Featured Courses

Stop thinking, start grokking

Flagship courses that have helped over 500,000 engineers land roles at top tech companies. Each one teaches the underlying patterns, not just the answers.

Coding Interview Grokking the Coding Interview: Patterns for Coding Questions

The 24 essential patterns behind every coding interview question. Available in Java, Python, JavaScript, C++, C#, and Go. The most comprehensive coding interview course with 543 lessons. A smarter alternative to grinding LeetCode.
★4.6192,798 learners
$79$197
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System Design Grokking the System Design Interview

The original system design interview course from DesignGurus. Master scalable systems, critical trade-offs, and 15+ real-world design problems with a repeatable interview framework.
★4.7185,880 learners
$59$148
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System Design System Design Fundamentals

Learn the core building blocks of scalable systems (load balancing, caching, databases, APIs) in a beginner-friendly, text-based course. From the creators of Grokking the System Design Interview.
★4.590,740 learners
$49$123
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System Design Interview Roadmap

Level up your system design skills with our courses, perfect for beginners to pros. Master system design and impress in your next interview.

Coding Interview Roadmap

Accelerate your coding interview prep with our pattern-based courses. Experience engaging learning that transforms how you approach and excel in interviews.

Mock Interviews

Schedule a technical mock interview with our experienced FAANG engineers and the authors of the ‘Grokking’ courses, who have conducted hundreds of interviews.

Resume Reviews

Boost your job search with our resume review service. Get a tech-optimized resume crafted by FAANG engineers and ‘Grokking’ authors to highlight your coding skills and projects.

How It Works

How Design Gurus prepares you for FAANG interviews

Tech interviews at companies like Google, Meta, Amazon, and Microsoft are pattern-based. Once you see the patterns, the questions stop feeling random.

System Design and Distributed Systems

Learn the architecture behind real products. Grokking the System Design Interview walks you through the 16 most-asked FAANG interview questions, covering distributed systems fundamentals, database sharding, caching strategies, and the trade-offs senior interviewers expect you to discuss out loud.

Coding Interviews and Data Structures and Algorithms

The 24 coding patterns cover the vast majority of questions you will see in a real loop. Instead of grinding LeetCode randomly, you build pattern recognition across data structures and algorithms in your language of choice. Faster preparation, deeper understanding, better performance under pressure.

Low Level Design and Object Oriented Design

Object oriented design rounds appear in almost every senior loop and many mid-level loops. Our low level design track covers SOLID principles, the design patterns that interviewers actually probe, and the class-modeling exercises that consistently show up at companies like Amazon and Microsoft.

Behavioral Interviews and Leadership Principles

The behavioral round decides ties, and at Amazon it can make or break the loop. Our behavioral course teaches the STAR framework, leadership principles preparation, and the specific story patterns FAANG bar raisers reward.

FAQ

Common questions

Everything you need to know about preparing for tech interviews with Design Gurus.

What is the system design interview?

The system design interview evaluates your ability to architect large-scale distributed systems. You are typically asked to design a service like Twitter, Uber, or YouTube within 45 to 60 minutes. Interviewers assess your grasp of scalability, data modeling, API design, and trade-off reasoning. It is a core round at FAANG and most senior engineering interviews.

How do I prepare for a FAANG coding interview?

Focus on patterns rather than grinding random LeetCode problems. Master the 24 core coding patterns that cover most interview questions, then practice data structures and algorithms with timed mock interviews. Grokking the Coding Interview teaches each pattern with worked examples in Java, Python, JavaScript, C++, C#, and Go.

How long does it take to prepare for a system design interview?

Most candidates need 4 to 8 weeks of focused preparation. Engineers with 3+ years of experience can move faster, while those new to distributed systems should plan closer to 8 weeks. A structured roadmap with daily practice and weekly mock interviews compresses the timeline significantly.

What is the difference between system design and low level design interviews?

System design interviews focus on high-level distributed architecture, including services, databases, caching, and load balancing. Low level design interviews, also called object oriented design interviews, focus on class structure, design patterns, and SOLID principles within a single service. Both rounds appear in most senior engineering loops.

Are mock interviews helpful for FAANG preparation?

Mock interviews are one of the highest-leverage activities in interview preparation. Practicing with a real FAANG interviewer surfaces communication gaps and time management issues that solo practice never reveals. Most candidates need 5 to 10 mocks before they perform consistently under pressure.