Xoogler here. I echo this so much, and it's what made me leave (was in a tech role as well)
Google really was my dream company through life, but 2-3 months in, things really became clear (luckily I was in a startup before Google, and that was crucial to understand what was wrong there).
- You can't really do something great, it's just mundane things on repeat
- After the first 6-7 months on the role, you're usually not learning, because of point 1
- People are amazing, but they're not as driven as you'd expect
- Growth is stunted
- Promotion is the main thing on everyone's agenda (without realizing there may be better work out there)
Ultimately, I feel it's an amazing culture and company but people have become too comfortable to realize the flaws :(