Open source. Open possibilities.

Tech Interview Handbook provides free, curated technical interview preparation materials for software engineers, covering coding questions, behavioral questions, resume guides, and system design.

The System Design Primer is an open-source guide for learning scalable architecture and preparing for system design interviews, featuring organized resources, solved exercises, and Anki flashcards.

A comprehensive guide for AI/ML technical interviews at big tech companies, covering coding, ML fundamentals, system design, and behavioral prep, with an optional MCP-based AI tutor.

Curated reading list on building scalable, reliable, high-performance large-scale systems, with design principles, case studies from tech giants, and interview resources.