PBPrep Bookfull-stack interview
Start preparingJS CompilerStar on GitHub
Free & open-source · MERN + NestJS

Crack your full-stack developer interview with confidence

A structured, no-fluff prep book covering JavaScript, React, Node.js, NestJS, MongoDB, system design, machine coding, DSA, and HR rounds — every topic as Definition → Explanation → Code → Real-world use → Likely questions.

Start preparing →Star on GitHub
  • 53topic chapters
  • 200+DSA coding questions
  • 10interview rounds
  • 100%free, forever

Prep for interviews at the companies you're targeting

Built around the questions real panels ask at top MNCs, service giants, and product companies hiring full-stack developers.

  • TCS
  • Infosys
  • Wipro
  • Accenture
  • Cognizant
  • HCLTech
  • Tech Mahindra
  • Capgemini
  • IBM
  • Deloitte
  • Google
  • Amazon
  • Microsoft
  • Meta
  • Oracle
  • SAP
  • Adobe
  • Flipkart
  • Paytm
  • Zoho
  • Swiggy
  • PhonePe

Everything you need, organized by round

JavaScript10 chaptersReact11 chaptersNode.js10 chaptersExpress / NestJS5 chaptersMongoDB5 chaptersMachine Coding2 chaptersSystem Design5 chaptersHR & Behavioral2 chaptersDSA & Coding1 chapterReference2 chapters

Don't just read — run the code

Every JavaScript example is one click from a live editor. Practice right in your browser with the built-in online compiler — no setup.

Open the playground →Launch compiler ↗

Ready when you are

Jump straight into the dashboard and track your progress — or drop a star to support the project and help others find it.

Open the study dashboard →Star on GitHub