Mar Castillo is currently a Financial Controller at CELSA GROUP, overseeing financial operations since 2025. They previously served as Audit Senior at EY from 2022 to 2024 and held the position of Senior Internal Audit at Fluidra from 2024 to 2025. Earlier in their career, Mar gained experience as a Becario de recursos humanos at Cellnex Telecom and as a Promotor de ventas at GrupoUno CTC in 2018. Mar completed a Professional Bachelor in International Sales and Marketing Management at IBA Erhvervsakademi Kolding in 2020 and holds a Bachelor's degree in Business Administration from the Universitat Autònoma de Barcelona, alongside a Master's in Financial Management and Auditing from UPF Barcelona School of Management.
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