Aaron Petras Aaron Petras La Crosse, WI Aaron Petras is presently works full-time as a Marketing, Administrative, and Project Manager at The La Crosse Symphony Orchestra. In 2019, he received a Bachelor of Arts in Marketing from Viterbo University. Petras' long-term professional goal is still in the works. Petras worked all through high school and college. At Bauer's Market and Garden Center, he started his work as a sales associate.