Shortly after, Furlong signed a publishing deal with Ryan Tedder, where he worked with artists like Colbie Caillat, Jordin Sparks, Leona Lewis, and the Wanted.

They would collaborate again in 2013, when Furlong wrote and featured as a vocalist on the single "Bring You to Life (Transcend)", which peaked at number 44 on the Billboard Dance/Electronic Songs chart.

[12] Furlong performed the song alongside Aoki at his 2013 concert in Los Angeles at the Shrine Exposition Hall, during which two Guinness World Records were set for "the longest scream by a crowd" and "most people simultaneously lighting glow sticks".

Furlong worked with 5 Seconds of Summer in 2014 for their debut self-titled album, co-writing "Everything I Didn't Say", "Social Casualty", and "Independence Day".

Later that year, Furlong worked with post-hardcore band Sleeping with Sirens co-writing "Kick Me", the first single off of their fourth studio album, Madness.

In 2015, Furlong began working with All Time Low on their sixth studio album Future Hearts, co-writing "Runaways" and "Don't You Go".

[14] As of March 2022, the single has accumulated more than one billion streams on Spotify, making it the second most popular FIFA soundtrack song of all-time.

[16] In 2016, Furlong was brought on as executive producer, co-producer, and a songwriter for Papa Roach's ninth studio album, Crooked Teeth.

Furlong worked with the politically charged rap-rock trio The Fever 333 in 2018, writing singles "Made an America", which was nominated for a Grammy Award for best rock performance, and "Burn It", which won the best song at the 2019 Kerrang!

In 2020, Furlong and Nicholas Petricca of WALK THE MOON wrote the song "Someday", a collaboration between Kygo and country artist Zac Brown, and "Supremacy" by The Fever 333, which was co-produced with John Feldmann and Travis Barker and interpolates the song "Rapture" by Blondie, listing Debbie Harry and Chris Stein as co-writers.

[20] In addition, he also co-wrote and produced "Hanging with Ghosts" by Yung Pinch featuring Good Charlotte and Goody Grace.

The first single, titled "Hot American Summer", was released on September 28, 2020, via Furlong's independent record label AttaBoy Music.

In 2022, Furlong was the executive producer, co-producer, and co-writer of Papa Roach's eleventh studio album, Ego Trip.