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Calvin Berthelier is a Key Account Manager Customer Success at Sport Alliance GmbH since September 2021. Previously, Calvin worked as a Customer Service Representative at Nunido from May 2019 to September 2021, where Calvin assisted customers with their orders and problem-solving. Prior to that, Calvin held various customer service and accounting roles at Australian Working Holiday Visas, Carsat, ICN Business School, RTE Réseau de Transport d'Electricité, EDF, and blg toul. Calvin holds a DSCG degree in Comptabilité from Conservatoire National des Arts et Métiers, a DCG degree in Comptabilité et finance from lycée Georges de La Tour, and a BTS CGO degree in Comptabilité et finance from lycée Georges de la tour. Calvin completed their Baccalauréat général in ES from lycée Ambroise croizat.