[citation needed] [2] Sanchez has worked in the music business as a record executive president and A&R.
At 17, he became A&R for the independent New Jersey label Rufftrax, signing producers James Christian and B.O.P.
Junior has released original music under these names or aliases: The Controllers [w/ Steve Mac], S-Men [W/ DJ Sneak + Roger Sanchez], Da Mongoloids [A DJ Collective w/ Armand Van Helden, Daft Punk, DJ Sneak, Roger Sanchez, Todd Terry, Ian Pooley, Laidback Luke, Basement Jaxx, and The Rhythm Masters], Da Shapeshifta Project [W/ Harry "Choo Choo" Romero], Dark Heads [W/ Dave Carlucci], Nitebreed [W/ Harry "Choo Choo" Romero], Output/Teletronik [W/ Chris Haliani], Riot Society [W/ Laidback Luke + Chris Haliani], and Subspecies [W/ Armand Van Helden].
Writing collaborations include Azealia Banks, Katy Perry, Stuart Price, Armand Van Helden, Thomas Bangalter, Ima Robot, Claude Kelly, Crookers, Stacy Barthe, Morningwood, Green Velvet, Mýa, Michelle Bell, Soshy, Princess Superstar, Bush, Bryce Wilson, and Good Charlotte.
[3] Production and remixes include Daft Punk, Madonna, Shakira, Katy Perry, Ariana Grande, Good Charlotte, Placebo, The Bravery, Gorillaz, Blaqk Audio, Hot Hot Heat, Róisín Murphy, Felix Da Housecat, The Faint, New Order, Emiliana Torrini, Jamiroquai, Giorgio Moroder, Moving Units, Les Rhythmes Digitales.