After a 32-year career in corporate America in managerial and executive positions with Cities Services Company, Occidental Petroleum, Amoco Business Services, PriceWaterhouseCoopers and IBM Business Consulting Services, Ambrose Sims retired to Louisiana in 2005. 

In 2007, Ambrose was named to the position of Parish Manager for West Feliciana Parish. Serving as the first Black parish manager, he was responsible for managing all aspects of parish government, including budget preparations, financial analysis, operational infrastructure, and policy and procedures. Ambrose left that position after four years and then co-founded the West Feliciana Democratic Party in 2013, where he served as the group’s first Chairperson. In 2015, he was one of the principles in establishing the West Feliciana Parish NAACP, where he currently holds the position of president.

He and his wife have been married for 49 years, and they are the proud parents of two daughters, Ashli, who resides in Tulsa, Oklahoma, and Amber, who lives in New Orleans.