🎯 Interview Prep

Questions, system design, and career guides for developers

Every Monday/Wednesday
  1. #10

    10 SQL Interview Questions That Actually Test Your Skills

    SQL interview questions beyond SELECT * — window functions, CTEs, query optimization, indexing strategy, and transaction isolation. With answers.
  2. #9

    System Design Interview: Design a Notification System — Step by Step

    How to design a notification system (email, push, SMS, in-app) in a system design interview. Queues, templates, preferences, and delivery guarantees.
  3. #8

    10 Node.js Interview Questions Senior Developers Get Wrong

    Node.js interview questions about the event loop, streams, clustering, memory leaks, and error handling. With detailed answers.
  4. #7

    15 Python Interview Questions That Go Beyond the Basics

    Python interview questions that test real understanding — generators, decorators, GIL, memory management, and async. With clear answers.
  5. #6

    System Design Interview: Design a Real-Time Chat App — Step by Step

    How to design a real-time chat system like Slack or Discord in a system design interview. WebSockets, message storage, presence, and scaling.
  6. #5

    10 TypeScript Interview Questions That Separate Juniors From Seniors

    TypeScript interview questions that test real understanding — generics, type narrowing, utility types, and common gotchas. With answers.
  7. #4

    The 15 React Interview Questions That Actually Come Up (With Answers)

    React interview questions that interviewers actually ask in 2026. Hooks, state management, performance, and patterns — with clear answers and code examples.
  8. #3

    What Senior Developers Actually Do (It's Not Just Coding)

    The real difference between junior and senior developers isn't code quality. It's everything around the code.
  9. #2

    System Design Interview: Design a URL Shortener — Step by Step

    A complete walkthrough of the URL shortener system design interview question. Requirements, architecture, database, scaling.
  10. #1

    The 20 JavaScript Questions Every Interview Asks (With Answers)

    The most common JavaScript interview questions with clear, concise answers. Closures, hoisting, promises, and more.