16 solved HLD problems · 20 solved LLD problems · 57 concepts, patterns & principles
HLD tests how you shape and defend a scalable system. LLD tests how you turn requirements into classes, relationships and working code. Get both preparation systems in one kit.
Current price · one-time payment
About ₹14 per solved design problem
Lock in ₹499 for this edition
Downloadable PDF · no subscription · yours to keep
230+ kits sold to engineers
Right for you if you have covered HLD and LLD fundamentals and want a structured way to practise, recall and defend them under interview conditions.
Real pages, not mockups
Open a page to inspect the actual diagrams, progression and density before buying.
Backend round in the same loop? All three rounds together are ₹999.
See the kitA repeatable preparation loop
Use the consistent visual structure to understand how a strong answer is assembled.
Redraw the architecture or rebuild the class model from memory under a timer.
Check the gaps, then practise trade-offs, failure paths and implementation choices.
Choose your preparation depth
Recommended for system design interviews
Both system design rounds in one kit—HLD concepts and solved problems plus LLD concepts and solved problems.
All prices are one-time. PDF access is delivered to your email within minutes of payment. UPI, cards and netbanking accepted.
Every round in the loop · one payment
Backend · HLD · LLD
If the design rounds are in your loop, these are the two kits you would buy anyway. This is both of them, plus the guides for after the offer.
This kit
₹999₹1 more than the two kits on their own. That difference brings the Job Change Kit with it.
Backend, both Frontend guides, DevOps, QA/SDET, Behavioural and GenAI preparation, plus HLD, LLD and Backend Technology Deep Dives.
Frequently asked
Does it include both HLD and LLD?
Yes — four PDFs in total: HLD core concepts, HLD solved problems, LLD core concepts and LLD solved problems.
Is this for beginners?
No — it's for engineers who have covered the fundamentals and need a structured way to recall, explain and defend them under interview pressure.
Is this video content or a course?
No — four downloadable PDFs you read on your own schedule. No account, no platform login, no video to watch.
Prepare both design rounds
HLD + LLD Kit
Festive price · ₹499