He signed himself "kir Joakim, monk and domestikos of Serbia" (кир Јоаким, монах и доместик Србије).
Serbian-American musicologist Miloš Velimirović (1922–2008) made a study on him, Joakim monah i domestik Srbije (1964).
The manuscript mentioning him with his titles was dated by Velimirović to before 1453.
The Athens National Library has two Koinonika, a Theotokion, and three Vespers, in Greek, by Kir Joakim (as of 1969).
One of his works, Kratima Terirem (Κράτημα 'Τεριρέμ), was included in Dragoslav Aksentijević-Pavle's album Music of Old Serbia (1987).