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Jonna Viherlehto is an experienced marketing professional currently serving as a Senior Campaign Planner at Clear Channel Finland since May 2022. Prior to this role, Jonna held positions as a Client Manager at GroupM Finland from February 2021 to May 2022, and at Dagmar from January 2017 to January 2021. Jonna's career also includes experience as a Senior Planner and Junior Account Manager at ToinenPHD from May 2011 to December 2016, as well as serving as a Media Manager at PHD Finland Oy from April 2008 to May 2011.