Dev was signed to Universal Republic in October 2010, and released her debut single "Bass Down Low" in November 16, 2010 which reached the top 10 in the United Kingdom. Her debut album The Night the Sun Came Up was released on March 27, 2012. The second single, "In the Dark", peaked at number 11 in the US chart, making it her most successful solo single to date. Dev in 2014 released two EPs, Bittersweet July and the second part as a follow up to part one. She's a radio host of the popular radio Beats 1 by Apple, founded in 2015.
In mid 2016, Dev started promoting her album with an opening single called #1 featuring Nef the Pharaoh which reached the top 15 on the Billboard Rhythmic songs chart.
Dev's sophomore studio album I Only See You When I'm Dreamin' was made available for pre-order in July 2017, it includes the singles All I Wanna Do & Come at Me and is her first full length project since 2011's The Night The Sun Came Up.