At The Disco and Paramore, early in his career, Bruno Mars and Ed Sheeran while head of Elektra Records, and Billie Eilish, 5 Seconds of Summer, J. Cole, Kendrick Lamar,[2] Lady Gaga and Imagine Dragons at Interscope.

[4] In 1996, while a freshman student at the University of Florida, Janick founded the independent record company Fueled By Ramen with Less than Jake drummer Vinnie Fiorello, and signed and developed bands.

At the Disco albums prompted the Warner Music Group to buy Fueled by Ramen in 2008, and install Janick as co-president of their Elektra Records label.

While at Elektra, Janick oversaw the careers of platinum artists Bruno Mars, Ed Sheeran, and Cee Lo Green.

The first year at Interscope Geffen A&M, he helped lead the team that produced hits from Robin Thicke, Imagine Dragons, Maroon 5, Eminem and Kendrick Lamar.

He explained to Variety his philosophy for music business: "What’s most important to me is being able to spend the time with an artist, and not just trying to get (a song) on every radio station.

"[3] Under Janick's direction, Interscope has entered into various label alliances including J. Cole’s Dreamville, producer/songwriter Benny Blanco’s Mad Love, LVRN, and The Darkroom.