[4] Following his ordination as priest, Gunawan continued his education, studying for his master's degree in the field of Scripture at the Pontifical Bible Institute in Rome and graduated in 1986.

[5] In 1990, he completed his doctoral program in Biblical Theology at the Pontifical University of Saint Thomas Aquinas, also in Rome.

On March 14, 2007, at a ceremony that took place at the Surya Wacana Seminary Hall next to STFT Widya Sasana, Gunawan along with Prof. DR. Berthold Anton Pareira were honored.

[2] On 28 June 2016, Pope Francis nominated Gunawan bishop of the diocese of Malang,[2] to replace Herman Pandoyoputro.

Gunawan was ordained by Ignatius Suharyo Hardjoatmodjo on 7 February 1982 in Stade Gajayana, Malang, with the co-consecrators being Antonius Subianto Bunjamin and Vincentius Sutikno Wisaksono.