LLD Deep Dive Series

Crack Design Interviews with Confidence — Not Guesswork

The LLD Deep Dive Series isn’t just a list of design problems.

It’s a crafted thinking system designed to help you build and explain scalable, clean, and extensible designs — the kind interviewers actually want to see.

📦 What You’ll Get Inside

Each system is structured like a 1:1 mock interview — filled with expert prompts, guided thinking, and traps to avoid.

For all 10 LLD problems, you’ll receive:

🔍 Problem Brief – Real-world framing of the system
🧭 Customer Journey Mapping – User-first thinking before diving into code
🧱 Key Entities + Data Flow – Get the fundamentals right before diagrams
📦 Class Diagrams + Interfaces – OOP-style design interviewers expect
📐 Design Patterns & Principles – Understand the why behind your structure
⚖️ Trade-offs, Scaling, Extensibility – Tackle "what if" scenarios with confidence
🚩 Red Flags to Avoid – Learn what signals weak judgment
🎯 Interviewer Perspective – What bar-raisers are silently assessing
✨ Bonus Examples & Variants – Practice real follow-ups and curveballs

🛒 Why It’s Worth It

A single mock session costs $120+ for 60 minutes.
This guide gives you 10+ mocks worth of insight — at your pace, on your time.

💬 And if behavioral interviews are also part of your prep —
👉 Check out my Behavioral Interview STARR Method Toolkit