Most Googlers joining Google today aren't gonna be tasked with the elbow grease of building a search engine from scratch, not even close.
You'll be a small cog in a large machine, engaging in theatrics justifying in length why your 10h/week of serializing/deserializing JSONS was so difficult and important to the company, while you rest and vest playing videogames at home, asking on Reddit if everyone working in FAANGs is as bored as you.