Dandan both played for and coached the University of the Philippines Diliman basketball teams, the Fighting Maroons.
[5] He later worked as an assistant coach for Air21 Express[4] and Powerade Tigers,[6] and on its successor team GlobalPort Batang Pier.
[8][9] Dandan also served as lead assistant for Columbian Dyip, but after Chris Gavina resigned after two games, he was appointed head coach.
[10] Due to a low-ranking finish, he resigned in order to focus as an assistant to Bo Perasol at the Maroons.
[14] He died from renal cell carcinoma at the Philippine General Hospital in Manila on 13 November 2024, aged 62.