Let me stop you right there. Maybe that works in SV but in most of Europe(the world?) you aint getting in to any well paying job at a big tech company without a degree from a prestigious university or previous experience at equally big and famous companies.
Companies here don't have the FAANG resources to whiteboard everyone who bothers to apply and check their algorithm skills when all the future employee needs to do is work on some CRUD app so they initially select based on how impressive your resume is and run you through some coding test later to weed out the bullshitters.
Although I live and work in a city with one of the top 300 technical universities in the world where graduating means you have to study algorithms, advanced math, etc. almost no jobs here outside or research and academia require knowledge about algorithms. Companies just want an experienced node/python plumber ASAP.