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Rostyslav Ivashchenko is a Senior Java Software Engineer at Respona since July 2020, specializing in Kotlin back-end development and leading the creation of a new back-end architecture and database implementation. Prior experience includes serving as Lead Java Developer at RiverSoft from July 2016 to July 2020, where responsibilities encompassed architecture creation, multi-platform client API development, and database management, alongside mentoring and code reviewing. Earlier, from January 2011 to July 2016, Rostyslav worked at Финансы и кредит as a Chief Economist in the Card Products and Processes Department, focusing on reporting, customer database management, and enhancing banking products and processes. Rostyslav holds a Specialist Degree in Finance from Poltava University of Economics and Trade, completed in 2011.