Yes, a landscaping company. Tell them you need a quote for regrading around your foundation and improving your water drainage. It's a common job.

There are many, many landscaping companies. Ask around friends, neighbors, coworkers, acquaintances and find someone who has had similar work done and liked their contractor. Many homeowners have had to go through this, so you should be able to find someone who is recommended by someone you know.

You need a landscaping company. If you’re not comfortable with your current one, find another one to do the work.

We need to get water away from our house via some minor regrading and by extending and reburying our downspouts. Who should we contact for this type of work? A waterproofing company we spoke to recommended our landscapers, but they don't speak much English and I'm not confident that we would get the desired outcome.