He serves as Archbishop Demetrios Professor of Biblical Studies and Christian Origins, Distinguished Professor of Old Testament and Semitic Languages at the Hellenic College Holy Cross Greek Orthodox School of Theology, Brookline, MA, USA,[1][2] and as Dean of Holy Cross since January 1, 2024.

[6] While at École, he does research and completes his first doctoral dissertation Cartea Profetului Osea: Traducere, introducere, si comentariu.

[8] In May 2018, Pentiuc was appointed inaugural holder of Archbishop Demetrios Chair of Biblical Studies and Early Christianity.

[8] Since 1998, he has been a professor of Old Testament and Semitic languages (Hebrew, Syriac) at Hellenic College Holy Cross Greek Orthodox School of Theology, Brookline, MA, USA.

He is married to Dr. Flora (Popescu) Pentiuc, MD Psychiatrist in Boston; they have two children, Daniel and Cristina.