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Alexander Beletsky is an experienced Senior Full Stack Engineer at Preply since August 2023. Previously, Alexander served as Chief Technology Officer and Lead Architect at eqolot, a Berlin-based startup in the marketing industry, from November 2015 to September 2023, overseeing technical operations and infrastructure design. As a co-founder and Full Stack Developer at Likeastore, Alexander contributed to the development of a social bookmarking platform from inception. Additional roles include Full Stack JavaScript Developer at MyLorry GmbH, where Alexander helped create an efficient local delivery service, and various development positions at e-conomic, InvisibleCRM, Miratech, and SMK. Alexander holds a Ph.D. in Computer and Information Systems Security from the National Aviation University, where also earned a Master’s Degree in Electronic Engineering.