Mugyenyi is reported to be heavily invested in construction, real estate, luxury hotels, apartment houses, and financial institutions.
[2] He previously served as the director of the Joint Anti-Terrorist Taskforce, a rapid response, counter-terrorism unit within the UPDF.
Before that, he served in 2001 as a military intelligence officer and was instrumental in defeating rebels belonging to the People's Redemption Army.
He has also served as the commanding officer of Entebbe Airport Aviation Security, where his unit was active against drug smugglers.
In January 2005, he retired from the army at the rank of lieutenant colonel,[3] and he has been mainly focused on his businesses, in construction and finance.