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Interview prep that actually helps you get the job
Deep-dive guides on system design, DSA, and cracking top Indian product company interviews — written for engineers, by engineers.
Featured Guide
The Complete System Design Interview Guide for Indian Product Companies
Everything you need to crack the HLD round at Swiggy, Razorpay, PhonePe, CRED, Meesho, and Flipkart — from the 45-minute framework to numbers every SDE must memorise.
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How to Crack Swiggy & Zomato SDE Interviews (2026 Guide)
A no-fluff breakdown of the Swiggy and Zomato engineering interview process — round structure, DSA patterns they favour, system design topics they probe, and what differentiates candidates who get offers.
The 45-Minute HLD Framework: How to Ace Any System Design Interview
A battle-tested, minute-by-minute framework for structuring your system design answer — from requirements gathering to trade-off discussion — used by engineers who've cracked FAANG and unicorn interviews.
System Design Interview Cheat Sheet — Save This Page
The one reference page you need before walking into any system design interview. Capacity estimation formulas, database selection guide, caching patterns, CAP theorem, and 30+ design decisions distilled to their essentials.
SQL Interview Questions for Data Engineering — Joins, GROUP BY, Window Functions, CTEs
The four SQL primitives that show up in every data engineering interview: LEFT JOIN anti-joins for orphan detection, GROUP BY with HAVING for duplicates, ROW_NUMBER vs RANK vs DENSE_RANK for top-N ranking, and CTE composition with recursive CTEs — with worked examples and full traces.
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