De Vries' Company, MDV Communications, was acquired by Imre Communications in 2007. During her career, she has helped dozens of companies build their marketing presence, develop their corporate voice, and create mechanisms for communicating with their target audiences.

Marci has worked with National Public Radio (NPR), where she was involved with their internal communications program for NPR Member Stations. Additionally, while working with Gr8, a Web developer in Baltimore, she created the public relations department and helped develop additional revenue sources by developing search engine optimization and online marketing promotions offerings for clients. At Choice Hotels International, she led the effort to use new media and contact management systems for public relations efforts. At Baker Book House, she executed publicity campaigns for over seventy authors per year.

On the entrepreneurial side, De Vries has worked with early-stage startups to build awareness, help attract customers and prepare for venture funding.

Marci De Vries received her BA in English from Western Michigan University and her Masters degree in Public Communication from American University. She also holds a certificate of Internet Advertising and Promotion from Georgetown University. She has been a guest lecturer in marketing and communications for the American Marketing Association, AMBest, and MBA courses at The Johns Hopkins University and Loyola College.