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Kristina Zhelezniakova has extensive experience in quality assurance and customer success, currently serving as a QA Engineer at Rozetka.ua since July 2024. Prior to this role, Kristina worked at Poster POS from October 2018 to March 2024, where responsibilities included positions as General QA Engineer, Manager of Customer Success, and Customer Support Manager. Kristina Zhelezniakova holds a Master's degree in Economics from Dnipro University of Technology, earned between 2014 and 2020.