Bartis earned a Bachelor of Arts degree in English and American Literature from Brown University. He was an intern at Fox Lorber Associates in 1985.
Bartis was Director of Programming at Quincy Jones Entertainment, involved in launching The Fresh Prince of Bel Air. He then became Vice President of Creative Affairs at HBO Independent Productions, and then Vice President of Original Programming. In 1993 Bartis joined NBC Studios and in 1997 he was appointed Senior Vice President of Primetime Series, where he oversaw series including Providence and Will & Grace. In 2001 he formed a film and television production company Hypnotic/Dutch Oven, with fellow producer Doug Liman whom he had met at university. Bartis, as part of his company, served as executive producer on Heist, The O.C.. In 2003 he produced the series of commercials and short films for Reebok, Terry Tate: Office Linebacker. He was executive producer on the 2008 film Knight Rider and is also executive producer its current TV series.