πŸŽ‰ NEW BATCH LAUNCHED
Weekend Batch 3.0 Launched

Weekend Batch 3.0 is Live Now!

The most awaited batch is officially launched. Seats are filling fast β€” secure yours before it's too late!

Enroll Now β€” Limited Seats πŸ”₯ ⚑ Only a few seats left
πŸš€ New Live LLD Cohort Check Batchesβ€” Limited Seats only Enroll Now

Crack LLD Interviews at
Top Product-based Companies

A structured, Live Crash Course (Weekday & Weekend Both available) designed to give you the exact framework to think, design, and communicate under pressure β€” the way top companies test.

500+ engineers mentored across cohorts

Live Class Live Class Live Class Live Class Live Crash Course
60K+ Instagram
15K+ LinkedIn
5+ Yrs Experience
πŸŽ‰ Student Placement
Student placed at Rubrik

Our student just cracked

Rubrik

LLD interviews are crackable with the right framework. This is proof. πŸš€

Join the Next Batch β†’
β˜€οΈ Weekend Batch starts 6th June, 2026 β€” Limited seats, Closing Soon
--Days
:
--Hours
:
--Mins
:
--Secs
Grab Your Seat β†’
⭐ 4.9/5 average rating
πŸŽ“ 100+ engineers mentored
πŸ’Ό Trusted by IIT/NIT/IIIT graduates

You Can Code. But You're Still Failing LLD Rounds.

Most engineers know object-oriented programming. The difference between those who clear LLD interviews and those who don't is structure β€” a repeatable way to think, communicate, and design on the spot.

Without a Framework

  • Panic when asked to design a system from scratch
  • Know patterns but can't apply them under pressure
  • Skip clarifications, jump to code too fast
  • Can't explain trade-offs convincingly
  • Freeze on extensibility / SOLID questions

After This Course

  • βœ… Clear 5-step framework to attack any LLD problem
  • βœ… Apply design patterns instinctively
  • βœ… Structured clarification β†’ design β†’ code flow
  • βœ… Articulate trade-offs with confidence
  • βœ… Build extensible, interview-ready solutions

A 6-Week Structured Curriculum

Every session builds on the last. By week 6, you'll have solved 15+ real LLD problems and done mock interviews.

Week 1

Foundations & Thinking Framework

  • SOLID Principles β€” applied, not theoretical
  • OOP mastery: abstraction, encapsulation, polymorphism
  • 5-step LLD interview framework
  • How to do requirements clarification
Week 2

Design Patterns in Practice

  • Creational: Singleton, Factory, Builder, Prototype
  • Structural: Adapter, Decorator, Facade, Proxy, Composition
  • Behavioral: Observer, Strategy, Chain of Responsibility, state
  • Pattern selection under interview conditions
Week 3

Real LLD Problems Basic Level

  • Parking Lot, Elevator, Library System
  • Chess, Snake & Ladder, Tic-Tac-Toe
  • Splitwise, Food Delivery, Ride Sharing
  • Live coding with real-time review
Week 4

Advanced LLD Problems – Real World Systems (Part 1)

  • Design Amazon Locker System (slot allocation, delivery workflow, scalability considerations)
  • Design Movie Ticket Booking System (seat locking, concurrency handling, payment flow)
  • Design Hotel Booking System (availability search, pricing strategies, booking lifecycle)
  • Design Splitwise / Expense Sharing App (settlement strategies, balances)
  • Deep dive into Concurrency & Thread-Safety (race conditions, synchronization, locks)
  • Applying SOLID & Design Patterns in real-world LLD problems
Week 5

Advanced LLD Problems – Core Systems & Patterns (Part 2)

  • Design LRU Cache (HashMap + Doubly Linked List, O(1) operations)
  • Design Rate Limiter (Token Bucket, Leaky Bucket, Sliding Window)
  • Design Task Scheduler (priority-based execution, delayed jobs, retries)
  • Design Notification System (multi-channel: email, SMS, push)
  • Design Logging Framework (log levels, appenders, extensibility)
  • Design In-Memory File System (directories, files, operations)
  • Design Vending Machine (state machine, inventory, payment handling)
Week 6

Mock Interviews

  • Full 1-on-1 mock interview sessions
  • Personalized feedback & improvement plan
Pradeep Kumar
Senior Backend Engineer

Hi, I'm Pradeep Kumar

I'm a Senior Backend Engineer with 5+ years of experience building scalable systems, and a graduate from IIIT Delhi.

I've personally cleared LLD rounds at top product companies β€” and more importantly, I've seen hundreds of engineers struggle not because they lacked knowledge, but because they lacked structure.

"Engineers don't fail LLD interviews because they can't code. They fail because they don't have a clear framework to think, communicate, and design under pressure."

This course is the distillation of everything I wish I had when I was preparing.

What Past Students Say

Real feedback from engineers who went through Cohort 1.

Student testimonial
Student testimonial
Student testimonial
β˜…β˜…β˜…β˜…β˜…

"The 5-step framework alone was worth it. I used it in my Rubrik interview and cleared the LLD round on the first attempt."

Bhavy Ramani SDE-2, Rubrik
β˜…β˜…β˜…β˜…β˜…

"LLD played the major role getting both offers. Thanks to your teaching I was super confident in LLD rounds"

Munmun Chowdhary SDE-3
β˜…β˜…β˜…β˜…β˜…

"After 1 year of struggle got an offer, thanks alot pradeep your course helped a lot"

Ashish Jaiswal SDE-2

More from students β†’

Choose Your Batch

Two flexible formats β€” pick what fits your schedule and goal.

πŸŒ™

Weekday Batch

Mon / Wed / Thu  Β·  8–9:30 PM IST  Β·  Starts June 8, 2026

πŸ”΄ Seats Filling Fast
πŸ”₯ 50% OFF β€” Limited Time

LLD Live Crash Course

Fast-paced Β· Interview-focused Β· Live

πŸ“… Batch Starts: June 15, 2026 Β· Mon / Wed / Thu Β· 8–9:30 PM IST

β‚Ή10,999 β‚Ή5,999

⚠️ Only Few Seats remaining for Live Cohort

  • βœ… 6 weeks of live weekday sessions (8–10 PM IST)
  • βœ… 15+ LLD problems solved live
  • βœ… Design patterns deep dive
  • βœ… SOLID principles + OOP mastery
  • βœ… multiple 1-on-1 mock interview sessions
  • βœ… Lifetime access to all recordings
  • βœ… Exclusive student community access
  • βœ… Doubt-clearing sessions
  • βœ… Certificate of completion
Enroll Now β€” β‚Ή5,999

Pay once. Access forever. Satisfaction guaranteed.

What makes this different?

🎯
Interview-first approach

Every session is designed around what interviewers at Flipkart, Swiggy, Razorpay, and FAANG actually test.

🧠
Live, not recorded

You learn by watching Pradeep think out loud in real-time. No polished YouTube tutorials β€” raw, authentic problem-solving.

πŸ”
Access to recordings

Miss a session? Re-watch before your next interview. The recordings are yours forever.

OR
β˜€οΈ

Weekend Batch

Sat / Sun  Β·  Enrollements Started already [Filling fast, will close in few days], Live Classes will begin 6th June

πŸ†• New Batch
πŸ—“οΈ Weekend Batch

LLD Live Cohort

Weekend Β· Interview-focused Β· Live

πŸ“… Batch Starts: 6th June Β· Sat / Sun Β· 11 AM IST

β‚Ή7,999 β‚Ή5,999

⚠️ Limited seats β€” Weekend Batch

  • βœ… 8 weeks of live weekend sessions
  • βœ… 15+ LLD problems solved live
  • βœ… Design patterns deep dive
  • βœ… SOLID principles + OOP mastery
  • βœ… 1-on-1 mock interview session with peers
  • βœ… Lifetime access to all recordings
  • βœ… Exclusive student community access
  • βœ… Doubt-clearing sessions
  • βœ… Certificate of completion
Enroll β€” LLD Only β‚Ή5,999

Pay once. Access forever.

β˜…β˜…β˜…β˜…β˜…

"The way you have adopted to make us understand seems to be the best way."

β˜…β˜…β˜…β˜…β˜…

"The deep dives into SOLID principles and Design Patterns using real-world examples like a Parking Lot and Elevator System made complex concepts feel intuitive."

β˜…β˜…β˜…β˜…β˜…

"I'm having a great learning experience. Your structured and well-organized approach to explaining LLD makes complex concepts easy to understand and brings great clarity."

β˜…β˜…β˜…β˜…β˜…

"Complex design principles were explained clearly with practical examples. I now feel much more confident writing clean, scalable, and maintainable code."

β˜…β˜…β˜…β˜…β˜…

"Very good and recommended to everyone who place importance on knowledge over money in the IT industry."

β˜…β˜…β˜…β˜…β˜…

"The structure of the program is well designed, and the sessions are interactive and engaging, which makes it easy to stay focused and involved."

β˜…β˜…β˜…β˜…β˜…

"Pradeep is very approachable and always easy to reach out to for any doubts or clarifications, which creates a comfortable and supportive learning environment."

β˜…β˜…β˜…β˜…β˜…

"The way you have adopted to make us understand seems to be the best way."

β˜…β˜…β˜…β˜…β˜…

"The deep dives into SOLID principles and Design Patterns using real-world examples like a Parking Lot and Elevator System made complex concepts feel intuitive."

β˜…β˜…β˜…β˜…β˜…

"I'm having a great learning experience. Your structured and well-organized approach to explaining LLD makes complex concepts easy to understand and brings great clarity."

β˜…β˜…β˜…β˜…β˜…

"Complex design principles were explained clearly with practical examples. I now feel much more confident writing clean, scalable, and maintainable code."

β˜…β˜…β˜…β˜…β˜…

"Very good and recommended to everyone who place importance on knowledge over money in the IT industry."

β˜…β˜…β˜…β˜…β˜…

"The structure of the program is well designed, and the sessions are interactive and engaging, which makes it easy to stay focused and involved."

β˜…β˜…β˜…β˜…β˜…

"Pradeep is very approachable and always easy to reach out to for any doubts or clarifications, which creates a comfortable and supportive learning environment."

Common Questions

Who is this course for?

This course is for working professionals (SDE-1, SDE-2 and beyond), final-year students, and freshers who are preparing to crack LLD rounds at product-based companies. You should know basic OOP and be comfortable writing code in any language.

Do I need prior LLD or design pattern knowledge?

No. The course starts from first principles β€” SOLID, OOP, basic patterns β€” and builds up to complex problems. Beginners are welcome, but you should know how to write a class and basic OOP.

What programming language is used?

Sessions are taught in Java, but the concepts (design patterns, principles, frameworks) are completely language-independent. If you know Python, C++, or any OOP language, you'll follow along easily.

What if I miss a live session?

All sessions are recorded and uploaded within 24 hours. You get lifetime access to every recording, so missing a session won't affect your learning.

What platform are sessions on?

Live sessions run on Zoom. Recordings and resources are shared via a private community portal.

Are mock interviews included?

Yes β€” every enrolled student gets at dedicated 1-on-1 mock interviews with peers and pradeep will be monitoring those sessions and feedback will be provided.

Is there a refund policy?

We offer a full refund within 3 days of the batch starting if you feel the course isn't right for you. After that, we don't offer refunds as content is actively being delivered.

Is it worth the money?

One salary increment from a better job offer often pays for this course 100x over. But more importantly: the confidence and structured approach you build here compounds across every technical interview you take in your career.

Free Masterclass

Get Early Access & Stay Updated

Drop your details below and I'll reach out with batch updates, free resources, and early-bird offers β€” straight to your inbox.

  • 🎯 Free LLD problem-solving framework PDF
  • πŸ“© Early-bird pricing alerts
  • πŸ“… Batch schedule updates before anyone else
πŸš€ Register for Free Masterclass

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Demo Session Recordings

Watch real sessions from the cohort β€” how problems are broken down, designed, and communicated live.

01

Design Pattern Live class watch for demo

Decorator and Composite Design Pattern

β–Ά Watch Recording Passcode: 3!a@L1k!

Free Sheet and other Important Preparation Links

Roadmaps, cheat sheets, and curated links to help you prepare faster.

πŸ—ΊοΈ

LLD Roadmap to crack Senior SDE Interviews

Step-by-step guide covering all topics you need to master for LLD rounds.

Open β†’
πŸ“Š

System Design Preparation Sheet by Pradeep

20+ Questions of LLD and 20+ Questions of HLD you need to master and company-wise sheet

Open β†’
Enroll Now