Ace Your System Design Interview.
A curated list of the best mock interview platforms, high-quality YouTube channels, and mental frameworks to pass your FAANG loops.
Top Mock Interview Platforms
HelloInterview
Top-tier mock interviews with AI or Ex-FAANG Staff Engineers.
Pramp
Free peer-to-peer mock interviews. Great for getting started.
IGotAnOffer
High-quality coaching specifically targeted at FAANG roles.
DesignGurus
Creators of Grokking the System Design Interview, offering mocks.
The PEDALS Framework
A standardized approach to structure your 45-minute system design interview successfully.
- P
Problem Requirements
Clarify functional & non-functional requirements.
- E
Estimation
Traffic, storage, and bandwidth back-of-the-envelope math.
- D
Data Model & APIs
Define core entities, schema, and API endpoints.
- A
Architecture (HLD)
Draw the high-level design with core components.
- L
Logic (Deep Dive)
Identify bottlenecks and dive deep into specific components.
- S
Scale & Trade-offs
Discuss caching, sharding, redundancy, and alternatives.
Top YouTube Resources
ByteByteGo
Alex Xu
Incredible visual explanations of complex system designs.
Exponent
Exponent Team
Real mock interviews with candidates and FAANG interviewers.
Gaurav Sen
Gaurav Sen
Deep dives into core system design components and architecture.
CodeKarle
Sandeep Kaul
Beginner-friendly real-world architectural case studies.