He worked at The Second City and Child's Play Touring Theater after which "Saturday Night Live" hired him as a composer.
He played the role of the Russian Hat Guy on Late Night with Conan O'Brien.
He married actress Tina Fey on June 3, 2001. They welcomed their first daughter, Alice Zenobia, on September 10, 2005 and their second daughter, Penelope Athena, on August 10, 2011.
He produced, directed, composed music for, and appeared in episodes of his wife's TV series "30 Rock" starring Alec Baldwin.