A&S inc. is a site civil General Engineering Contractor Who has made its way in the industry through dedication, integrity, and hard work. Being versatile is one advantage we have over other contractors, another is our ability to pivot and make adjustments in order to keep the schedule without sacrificing time or quality. Alvarez And Shaw stands behind our word. We do what we say we are going to do. The difference between a good job and a great job, is in the details.