Jansen Inc. is a heavy civil construction firm based in Seattle, WA. Over the course of the past 50 years, Jansen Inc. has gr ... own from being a landscape contractor into a heavy construction company specializing in large civil and private projects throughout the United States. Our team is comprised of highly experienced and dedicated individuals who take pride in the work they do. Come work for a great team! Learn more about us and our track record on our website: Jansen-inc.com read more