After being a reserve last UAAP Season 77, Valdéz returned to beach volleyball together with Bea Tan and Jhoana Maraguinot for season 78. They finished the season in second place after falling to DLSU Lady Spikers. 2015 was one of Alyssa's most fruitful years. She repeated the bronze medal with Ateneo in the 2016 ASEAN University Games held in Indonesia.
Thai club, 3BB Nakornnont, announced on December 24, 2016 that they have signed up Valdez to play for them. She was to debut for 3BB Nakornnont on January 29, 2017 in her club's win over King-Bangkok but was forced to skipped a match after only receiving her International Transfer Certificate hours before the match. She debuted for her club almost a week later on February 4, 2017, in a match against Bangkok Glass, where her team lost all three sets.