Roisin O'Brien currently serves as Marketplace Associate Director at EssenceMediacom Australia since May 2022, previously holding the title of Marketplace Investment Manager. Roisin has worked with notable brands such as adidas, Deakin, Lavazza, Milwaukee, and Moonpig. Prior to this role, Roisin accumulated significant experience at MediaCom Ireland from May 2019 to May 2022, progressing from Senior Account Executive to Account Manager, and managing key clients including Lidl IE & NI, Boots, Bayer, and JD Sports. Early professional experience includes positions in finance and administrative support, alongside a Bachelor of Commerce degree with a focus on Marketing and Food Marketing from University College Cork.