But when the People Power Revolution occurred and the Beermen was left the league for a while, he worked for Tanduay Rhum Makers under coach Arturo Valenzona and won back-to-back championship in 1987, but lost in the third conference and spoiled their chance to swipe the prestigious Grand slam.

When Norman Black returned, this time as a full-time head coach, Pumaren helped the Beermen to win four championships, including the 1989 grand slam.

[3] Pumaren led the Philippine team (RP-5) into a silver finish against Malaysia in 1989 Kuala Lumpur Southeast Asian Games.

In 1995, Swift changed its name to Sunkist Orange Juicers and he led his team to two championships (defeating Alaska Milkmen in both finals series), but lost in the last conference.

Pumaren was hired by Talk 'N Text Phone Pals in 2005–06 season as their consultant, but later became head coach in 2006 Philippine Cup.

[17] But after the finals appearance, they suffered some losses led to rumors of team management firing him and his staff, but after a meeting with the players, it was decided to defer the decision until after the next tournament, the 2008 PBA Fiesta Conference.

[20] Pumaren was hired by UE Red Warriors as head coach, and led his team to a 4th seed playoff game against the eventual champions NU Bulldogs, but lost.

In 2019 PBA D-League Aspirants' Cup, he led the Scorpions to be a great performing team, but lost to Ateneo Blue Eagles 3 games to 1.

[22] In 2020, he returned as head coach for the De La Salle Green Archers in the UAAP, replacing Gian Nazario.