How do you end up with one of the biggest jobs in media, overseeing $15 billion in annual client investment?  Matt Sweeney, Chief Investment Officer for GroupM U.S., shares his story in today's edition of Careers in 20/20.  He offers timeless advice for the Class of 2020 and job seekers of all ages. Enjoy and … Continue reading Careers in 20/20 with Matt Sweeney