Advice about foundation problem please ?

[John Matthew Johnston]

Hi question about a rental property I own? One if my rentals seems to be having some foundation issues. I received a call from a tenant that the front door wouldn’t lock. I looked at it and it seems to be that the door does not line up with the latch anymore(Door and Jam less than 2 years old). On inspection I found small cracks in a couple of the rooms in the house that were not there before. I also found some slight shiftiness(Less than 16th of an inch) in a couple blocks in the basement. It’s

Definitely moving. It’s also on a hill. My question is who would I call for this ? A good contractor or a structural engineer? Any advice would be appreciated!