Designing a file sync and storage service like Dropbox or Google Drive is a popular system design interview question that […]

Database design questions appear in nearly every senior engineering interview. You need to go beyond SELECT statements and demonstrate understanding

Designing the Twitter timeline is a classic system design interview question that appears at Twitter/X, Meta, LinkedIn, and many other

Trees and graphs form the backbone of many technical interview problems. Master these traversal patterns and algorithm templates — most

Dynamic programming (DP) is one of the most tested algorithmic topics in FAANG interviews. Rather than memorizing problems, learn the

Designing a Git hosting platform like GitHub tests your ability to handle version control storage at scale, real-time collaboration (PRs,

Operating systems fundamentals appear in interviews at companies building systems software, operating in kernel-adjacent spaces (Cloudflare, HashiCorp, Apple), and anywhere

JavaScript drives nearly every web frontend and an increasing share of backend (Node.js). TypeScript has become the default for serious

Designing a Slack-like team collaboration application tests your knowledge of real-time messaging, WebSocket management, distributed storage, and search. This question

Networking fundamentals appear in almost every senior engineering interview. Whether you’re designing a system or debugging production, you need to

Designing an e-commerce platform at scale appears frequently in system design interviews at Amazon, Shopify, Stripe, and DoorDash. The challenge

Behavioral Interview Questions (2026): STAR Method, FAANG Frameworks, and Winning Answers Behavioral interviews determine whether you get an offer at

System Design: Gaming Leaderboard at Scale Designing a leaderboard is a popular system design question at gaming companies (Roblox, Riot

SQL Interview Questions (2026): Window Functions, Optimization, and Advanced Queries SQL is tested in virtually every technical interview — data