Jellinek started his scenic design career in high school where designers came into his school and mentored her. He then obtained an internship with the Philadelphia Fringe Festival. He went to college for design began with scenic and costume design, and met his mentor Michael McGarty. He then went on to get her MFA at
New York University Tisch School of the Arts's Design for Stage and Film. He was touted by Live Design, a national magazine for theatrical and concert design and technology, as a Young Designer to Watch in 2010. He opened his first show on Broadway in 2017 with Marvin's Room at the
American Airlines Theatre with
Roundabout Theatre Company. == Awards and nominations ==