Am I a jerk for accepting a job while looking for PhD positions?

Pretty much the title.

I got laid off from my previous job, so I took a position as a tech at a nearby university. The department has great staff and they're all super friendly and welcoming, but since it is just a tech position I'm still looking for opportunities to continue onwards and upwards. I can't help but feel kind of conflicted about it since they definitely need the help and were super grateful to hire me. I would feel seriously guilty about leaving if (serious if) I did find something relatively soon (e.g. within 6 months or so). Would it be an assholish thing, or am I overthinking it?