Hoover's design career began with professional theater in Chicago.[3] He began working in film in 1982.[1] His film credits as production designer include It Takes Two (1988), Prime Target (1989), and Girl, Interrupted (1999).[4] He was the production designer for the television series Twin Peaks (1990-1991). He was nominated for an Emmy award for the 2002 television film Live from Baghdad.
On Broadway, Hoover's credits include Not About Nightingales, for which he won the 1999 Tony Award for Best Scenic Design. The New York Times described Hoover's design as an "intense, vivid production" when it opened in February 1999.[5]
His recent work includes the 2020 television miniseries The Plot Against America and the 2023 crime thriller Finestkind.[4]