Ronni Walker, a Media Director at MJS Advertising Marketing Consulting since November 2010, previously held roles such as Senior Media Buyer at Carrera & Partners Advertising from 2004 to 2008 and Media Buyer at Hill Holliday from 2000 to 2002. With a Bachelor's degree in Marketing and Finance from Northeastern University, Ronni also worked as a Freelance Media Buyer from 1995 to 2002.
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