Isaias grew up with his two older brothers who taught him about cinema and its profound power. He joined the Taller Nacional de Teatro in Costa Rica, training in theater and film/TV. He moved to the United States in 2018 to complete his senior year and started his studies at The Academy in 2019. He has starred in one feature film and multiple short films. His last short film Ñaños was officially selected at the 2022 Tribeca Festival. Some of his New York Theater credits include Jonathan Baransky in the Off-Broadway REVIVAL of Dream On, Baransky (American Theatre of Actors), Aisymnetes in Raving Reason (La Guardia Performing Arts Center), Alfonso LeChien in The Gnarly Narwhal (The Tank), Miguel in The Window Washer (Emerging Artists), and Marcellus/Guildenstern/Osric in Hamlet (American Theatre of Actors). In 2024, Isaias and his brothers created Purple Duck LLC, an independent film production company.