Gitlabs salaries are historically low compared to what I'd expect, but their talent is also much more global than a lot of big tech corps so while you won't find someone from CA expecting a "high" CA salary there you'll find a lot of great global talent that probably has a more difficult time working at a $big_name since they might not have offices in their country.

None of the salaries I've seen there seem remotely "senior/architect" level if you want Bay/WA talent.

That's the way I see the company, at least.