We Build People Who Build the Future KSA is an industry leader, providing a broad range of engineering, architecture, planning, surveying, and construction management services. Founded in 1978, the firm has grown to approximately 150 employees located in multiple offices in the south central U.S. KSA has been named to the ENR Top 500 list as one of the 500 largest design firms in America. KSA was selected as a Zweig Group 2020 Hot Firm and 2020 Best Firms To Work For.