I am in the lucky situation as a 24h/week (3 days) software (web application) developer. While my working hours is the last thing I'd like to change, my current employer became now one of the first things. My recent interviews gave me the impression that employers don't even consider hiring a part time developer (e.g. two 20h/week instead of one 40h/week).
While I know only my side of that story I'd like to have insights of the other side. One reason I might think of are costs which are a function of the number of employers (e.g. a laptop or accounting) which would increase by 50%. I would like to get an idea of the significance of such costs in order to adjust my target salary during negotiations. Next to further valid reasons I'm also interested in possible fears or uninformed opinions (e.g. two part timers produce more facility costs).
Unfortunately I didn't ask the question to one employer yet (as I didn't want to make myself unattractive in the first round). I guess I will have to sacrifice some jobs to get more informations. But let's ask this question here in the first place.
My primary interest is about the situation in Germany. But I think the answer to this question might be globally the same, as one of those interviews was in Kuala Lumpur.