All the resources you need to get to Senior Engineer and beyond

Learn System Design concepts and prepare for interviews using free resources.

💯 Curated coding interview preparation materials for busy software engineers

Papers from the computer science community to read and discuss.

Learn how to design large-scale systems. Prep for the system design interview. Includes Anki flashcards.

Master the command line, in one page

A collection of (mostly) technical things every software developer should know about

A resource to help you become good at work 👇

An attempt to answer the age old interview question "What happens when you type google.com into your browser and press enter?"

Learn Low Level Design (LLD) and prepare for interviews using free resources.

Tips and resources to prepare for Behavioral interviews.

Most important React.js interview questions for busy Front End Engineers (updated for 2025)