Fr. Mile Subotic was born in Belgrade, Serbia. While attending St. Sava Theology High School in Belgrade, he also edited an Orthodox magazine for youth called “Rastko”. After two years of Theology College in Belgrade and with the blessings of then +Patriarch Pavle, he entered the St Sava Theology College in Libertyville, Illinois. During his education in Libertyville, he taught Sunday School classes and Serbian culture and language classes. Upon completion of his studies he married Irena, who also completed a theology degree in education. In July of 2002, he became the pastor at Sts. Peter and Paul SOC in South Bend, Indiana.
While a pastor he continued his graduate school education at the University of Notre Dame, hosted an Orthodox radio and TV program and held board member positions in the Midwestern Diocese. He returned to Belgrade in 2008 and became the pastor of Holy Apostles Bartholomew and Barnabas in Rakovica, in the church where he was baptized and where he grew up. During this time, he focused on his research in Liturgy and church history.
In 2014, he entered his doctoral studies focusing on church history in the Theology School of the University of Belgrade. In 2016, he defended his proposal for a doctoral dissertation on the “Historical- Ecclesiastical Aspects of the Organization of the Orthodox Church in the USA in The first half of the 20th Century”, and became a PhD candidate.