President Mike DeRosa, who founded his firm in July 1999, announced the move in a LinkedIn post this week. He has become software services director at Dean Dorton, which placed No. 58 on Bob Scott’s Top 100 VARs with $18.3 million in revenue. DeRosa Mangold was selected for VAR Stars for 2023 with 10 employees and $2.8 million in revenue. It carries Sage 100 and Intacct. Dean Dorton sells Dynamics BC and GP and QuickBooks Online.