Hagan brings more than 20 years of experience to the new role, where her key focus has been around planning and delivering national and international multi-industry, cross-sector B2B events.
She has freelanced in agencies including Jack Morton Worldwide and Fremantle Media, among others.
Hagan said: "Joining Crown during their time of growth is exciting and I’m eager to bring my skills to complement the collective experience of the existing team in delivering innovative solutions for clients.
"I look forward to the creative challenges and working with the team to produce truly cutting-edge events."
Simon Hambley, director of live at Crown, added: "Rosemarie’s accomplishments to date in the industry strengthens our team’s overall skillset and her vast sector experience will add to the value we deliver to clients. Our commitment to high levels of client service and originality in the work we produce remains at the forefront of our objectives.
"Rosemarie’s appointment further supports this and in addition enriches our capabilities as an integrated, full-service creative agency."
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