DesignDojo
HLD interview write-ups

System Design interview write-ups

Senior-level walkthroughs of the system design problems FAANG actually asks. Each write-up reads like a real interview — requirements, estimation, API, data model, deep dives.

28 write-upsSenior-level depthBrowse practice problems
easy· 4 write-ups
medium· 12 write-ups
hard· 12 write-ups