High School:
Javier attended Colegio Marista in Guaynabo, Puerto Rico.The Colegio Marista volleyball team was a two-time Puerto Rico High School League Champion squad, and Caceres was named MVP of the team both times. Javier also played for the Puerto Rico National Team, and participated in the Junior Olympics six times, earning two silver medals.

Personal:
Javier Caceres was born in Guaynabo, Puerto Rico. He is the son of Juan and Rosadelle Caceres. He has three older brothers who all played volleyball, and were all liberos. Caceres is a business major with plans on becoming a sports agent.