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Stefan Kosev is a seasoned software engineer with extensive experience in backend development, currently serving as a Senior Backend Engineer at Busuu since June 2020. Prior to this role, Stefan worked as a PHP Developer at VIPR Ltd from February 2018 to March 2020, at 7DOTS from January 2016 to December 2017, at Space Airconditioning Plc for a brief period in 2015, and at Sportelit JSC from December 2013 to April 2015. Stefan holds a Bachelor's degree in Tourism and Travel Services Management from Universitet 'Prof. Dr. Assen Zlatarov' in Burgas, obtained between 2005 and 2009.