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Marcin Grzywacz is an experienced professional in the field of e-learning and customer service, currently serving as a Senior e-learning Developer and E-learning Tester at Transition Technologies MS since December 2017, where responsibilities include creating training courses and websites on the MS SharePoint platform. Prior to this, Marcin held various positions in customer service and sales at Liberty Poland S.A. and Polkomtel Sp. z o.o., where duties involved coordinating sales operations and selling telecommunications services. Marcin's career began with roles focused on sales and customer service at multiple telecommunications companies. Marcin holds a Master's degree in International Relations from Uniwersytet Andrzeja Frycza Modrzewskiego in Kraków, earned between 2001 and 2006.