New York City-based middle-market private equity firm RTC Partners recently acquired Los Alamitos, Calif.-based Simplus Management Corp. for an undisclosed sum.

Simplus offers professional program-, project- and construction-management services for governmental agencies, as well as architect and engineering firms across Southern California. RTC merged Simplus with three other businesses to create its portfolio company, Anser Advisory.

Generational Equity LLC advised Simplus on the transaction.