I'd guess that implementing Fizz Buzz or describing a basic database schema is enough to get hired to 50% of programming jobs. That includes quite a few senior

I'd guess that implementing Fizz Buzz or describing a basic database schema is enough to get hired to 50% of programming jobs. That includes quite a few senior positions. Not exaggerating, Fizz Buzz or a similarly trivial problem is the only tech screen more often than you'd expect. Not only that, but the algorithm challenges are less common now. It's been a long time since I interviewed with a company that didn't give you a "take-home" problem. Personally, I disagree with this practice as it selects for people with extra free time, but there's no reason for you to be experiencing PTSD (is the P "Pre"?) about this. There's no shame in talking to a counselor, might help you sort out why you're really so worried.