Atty. Reposar obtained his Juris Doctor Degree from DLSU-Tañada-Diokno College of Law. He is a multi-awarded student-leader who garnered recognition not just from his university but from external Organizations as well. In 2020, Atty. Reposar was awarded the Prestigious Gawad

Lasalyano Commendation on Leadership and shortly after, he received a leadership award from the Association of the Law Students in the Philippines.

In Law School, he served as the President of the premier moot and debate organization and in the following year, he was elected as the President of the Law Student Government of DLSU. This led to him being recognized by the College of Law for his recognition within and outside the University. During his graduation, he was awarded the Moot and Debate Recognition, Human Rights Award, and the Senator Padilla Leadership Excellence Award.

At the firm, he handles corporate and tax matters, immigration, criminal litigation, and matters involving financial technology. He is also a professor at De La Salle-College of Saint Benilde where he teaches courses under its Diplomacy and International Affairs Department.