Ambition Custom Homes. Construction Site Superintendent. Are you ready to join a team that is ambitiously building better, safer homes and enhancing the client experience. . Ambition Custom Homes (ACH). is seeking a. Site Superintendent. to play a pivotal role in our award-winning residential custom building firm providing services in Montgomery County, MD, and the surrounding areas. ACH. is a residential custom home builder and remodeler dedicat...