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Margaret O'Brien, MBA, currently serves as Marketing Manager at Choose Chicago since October 2021, having previously held roles as both Marketing Specialist and Senior Marketing Coordinator at Project Management Advisors, Inc. from February 2019 to October 2021. O'Brien's career includes positions such as Marketing Coordinator at Marcus Hotels & Resorts and Brand Ambassador for Switch, where product promotion and demographic targeting were key responsibilities. Additional experience encompasses academic coaching at Special Solutions - Private Learning Center, marketing internships at Lift For Life Gym, and fundraising at Nine Network of Public Media. O'Brien holds an MBA from Marquette Graduate School of Management and a Bachelor of Science in Business Administration with a focus on Marketing from Saint Louis University.