Alen Lalić was born on May 23, 1989 in Šibenik, where he completed primary and secondary school. He enrolled the Faculty of Law in Split in 2008, which he graduated in the regular term. He graduated in the Faculty of Law as one of the best students in his generation and as a scholarship recipient of the Republic of Croatia. Winner of the Dean's Award for Achievement. During his studies, he volunteered at the Department for Assistance to Victim and Witnesses of crime at the County Court in Split.

As a representative of the students of the Faculty of Law in Split in 2013, he participated in the Regional Moot court competition Western Balkans.

From 2014 until October 2020, he worked at diffrent law offices in Šibenik as lawyer trainee. In 2017, he passed the bar exam at the Ministry of Justice of Republic of Croatia.

Since November 2020, he has been employed as an assistant, and since June 2021, as a lecturer at the Polytechnic in Šibenik.