Robert Michael Kinelski (born January 27, 1981^[1]) is an American audio engineer, mixer, and record producer. He is best known for his work with Billie Eilish, Finneas, Lil Dicky, Big Sean, Karol G, Joji, and Beyoncé, among others.^[2] In 2020, Kinelski won four Grammy Awards, including Record of the Year, Album of the Year, Best Pop Vocal Album, and Best Engineered Album, Non-Classical for mixing Billie Eilish's debut album When We All Fall Asleep, Where Do We Go?.^[3]

Kinelski was born in Staten Island, New York. At a young age, his family relocated to nearby Howell Township, New Jersey. Kinelski graduated from Howell High School and the SAE Institute in Manhattan.^[1]

Kinelski started his career at Sony Studios New York, engineering for Swizz Beatz, LL Cool J, and Ryan Leslie, amongst others, notably working on Beyoncé's GRAMMY-winning album B'Day.^[4]

After relocating to Los Angeles in 2009, Kinelski collaborated with No I.D., J. Cole, Rihanna, Nas, Common, Vince Staples, Jhené Aiko, and Big Sean, and more as a member of the Cocaine 80s music collective.^[4] Since 2018, he has worked very closely with Billie Eilish and Finneas O'Connell, mixing a majority of their discography.