Thomas Rogers, 59, of Moraga, is currently the county's chief deputy district attorney and heads the District Attorney's Oakland-based Northern Division, where he oversees major prosecutions in that part of the county and files charges in serious cases such as murders.
Rogers, who has been with the district attorney's office since 1976, previously prosecuted many high-profile murder cases.
He is a Republican and earned a law degree from the University of San Diego School of Law and a Bachelor of Science degree from Santa Clara University.
He fills the vacancy created by the conversion of a court commissioner position on Oct. 8.
Armando Cuellar, 59, of Clayton, has been a deputy district attorney since 1985 and currently heads the office's asset forfeiture unit.
Cuellar, a Democrat, earned a law degree from the John F. Kennedy University School of Law and a Bachelor of Science degree from Trinity College. He fills the vacancy created by the conversion of a court commissioner position this month.
The compensation for each position is $178,789.