[3] Echarri rose to prominence with his first television appearance at the age of eleven when he joined season 2 of The Voice Kids, where he reached the Top 6 under Sarah Geronimo's team.

[5] In 2016, Echarri opened the Manila Tour show for American singer, songwriter, and YouTube viral-hit artist Greyson Chance.

Echarri became a member of the teen pop group ASAP G!, alongside Isabela Vinzon, Jayda Avanzado, Ylona Garcia, Jeremy Glinoga, and Darren Espanto.

"[11] He also became part of the "Gold Squad," which refers to the four teen stars of the top-rated series Kadenang Ginto: Francine Diaz, Andrea Brillantes, and Seth Fedelin, and himself.

Echarri also announced on Instagram that he would be holding a free virtual concert, streamed live on his Kumu channel on his 18th birthday, where he would perform songs from New Views.

[17] In 2022, Echarri, alongside his friend Markus Paterson and Moophs, released their first collaboration titled "Hotel Room" under Tarsier Records.

In 2023, Echarri was featured on Troy Laureta's latest album, which includes fresh covers of Original Pilipino Music (OPM) classics and contemporary hits.

[20] Kyle Echarri made his theatrical debut as Master Kundoktor[21] in Ako Ay Si Josephine, a musical show featuring the hits of Filipino pop-rock singer-songwriter Yeng Constantino.

[23] The production included legendary dancers Edna Vida and Nonoy Froilan, BP mainstays Denise Parungao, Garry Corpuz, Rita Angela Winder, and Jean Marc Cordero.

For the vocal parts, ABS-CBN stars Karylle, Michael Pangilinan, and Markki Stroem performed, along with an alternate cast including Cooky Chua, Sandino Martin, Jef Flores, and Noel Comia Jr.[24] After season 2 of The Voice Kids, Kyle was cast in the top-rated ABS-CBN teleserye On the Wings of Love as Brent Wyatt, the half-brother of Nadine Lustre's character Leah Olivar, in 2015.

The success of the series led to the formation of The Gold Squad, a teenage quartet consisting of Kyle, Francine, Andrea, and Seth, who are among this generation's most popular young actors.

In 2020, Echarri and Diaz, known as KyCine, starred in the iWantTFC digital movie Silly Red Shoes, directed by James Robin Mayo.

In 2021, Echarri became one of the main cast of Huwag Kang Mangamba, a primetime inspirational teleserye hit, starring alongside the Gold Squad members and other well-known veteran actors in the country.

[30] On a guesting in Magandang Buhay, Echarri clarified that he and Chie Filomeno are friends even before the show, explaining that their closeness was because they both went through a time in showbiz where netizens treated them (individually) on a bad light and, through PBB, felt like they have to prove something and "fighting for our spot inside the house.

[32] In February 2022, just after Pinoy Big Brother: Kumunity Season 10, Echarri was added to the main cast for a youth-oriented musical romantic comedy-drama streaming television series Lyric and Beat directed by Dolly Dulu.

[34] In the same year, as reported by the Philippine Star, Echarri had his first solo leading role; he had been paired with Francine Diaz in some of ABS-CBN's drama projects and with The Gold Squad previously.

[35] His first lead role Beach Bros is a youth-oriented comedy-drama streaming television miniseries by Dreamscape Entertainment, directed by Victor Kaiba Villanueva, which premiered from July 16 to 31, 2022, on iWantTFC.

In November 2022, Echarri played the young "Apollo" Adelantar in the primetime action series The Iron Heart, starring lead actor Richard Gutierrez as his counterpart.

In December 2023, Echarri was announced by ABS-CBN to star in a new television series Pamilya Sagrado alongside award-winning actor with Piolo Pascual, and Grae Fernandez, all in the lead roles.