In my experience in the tech industry, 10 days is standard for entry* level positions, but quickly grows as you advance your career. At some places you can accrue more than those 10 days as well, based on hours worked. A lot of places do the "unlimited PTO" thing too now, so 10 days for a pretty experienced person working at a successful tech company seems pretty paltry to me.

I've had ~25 days off for years, and was most of that time merely "developer". My first career job was 3 weeks from day 1. I would gamble many of the people that work for LTT are otherwise in fields that would get more than 10 days per year starting. And I'm in the US. My Canadian friends always have better vacay and bennies than I do.

I get 5 weeks at a smaller semiconductor fab in Oregon, that's the industry standard for fabs in the Portland area. Intel has a mandatory month sebatacle after 5 years of employment I've heard.