In my capacity as a homeowner in the Bay Area: meh.
They look like ordinary cracks from settling, and the seller could have easily hidden them with a coat of paint and maybe a tiny smear of caulk.
If you’re concerned about structural damage, look for things like “paired” cracks with missing stucco, eg: one at each corner of a window or door frame - as the building moves in a quake, cracks will tend to open and close during the event as the building shakes, and chunks of stucco will sometime get chipped off. Single-corner cracks without missing material tend to be plain settling as the building moves in one direction.
When I bought my house, we just had a regular inspection without any extra engineering evaluation. I think SEs only enter the picture if you’re dealing with obvious damage. If you’re really concerned, I’m sure you can have an SE do an evaluation. What does your Realtor have to say on this? They may have a couple contacts that they’ve worked with in the past, or they may advise it’s not needed.