In Switzerland jobs are usually advertised in %, where 40h-45h/week is 100%. From that it is also usual to talk about 80% or 4/5days/week (and so on for other percentages).
Only if you consider 32/36 hours as part time - the culture is strong in the sense that those are often considered full time as well, and are therefore allowed, but getting a job with fewer hours than that (eg for a three-day work week) will be a lot more difficult.
I (a man) was 4/5 when my kids were small but I'm currently 9/10. Contractually it's yearly, but it ends up weekly. 9/10 tends to be difficult to distinguish from full time, since you get more focused after this mid week break.
I've had managers/POs/PMs/... work 90% and simply take every Friday afternoon off.
But if you're a dev then yes, taking half a day off is pretty meaningless. I see it as a way to force yourself to take 22-23 additional days of vacation, and at least two of these every month.