Contractor recommendations or idk even where to start

Im wanting to have a garage added on to the front of my home and a new roof (not just shingles but a different truss design and all) built on my home.

I kind of assumed a contractor would handle working with an architect and a structural engineer but idk how this actually works. My home isnt in the highlands..it isnt fancy. Im in bullitt county and I value function over looks and just want something that will be solid and last.

Does anyone have recommendations for a contractor that would be good for this type of job?