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Olha Khaletska is a Senior Full Stack Engineer at OneUp, with a career spanning over a decade in software development. Previous roles include Senior Software Engineer and Team Lead at SoftServe, where Olha designed and implemented backend services and upgraded existing services from Java 8 to Java 17. At Gentleware Ukraine, responsibilities involved designing a RESTful server and integrating the WePay payment system, along with automated deployment. Earlier experience includes a Junior Java Developer position at ProfITsoft, supporting server-side functionality, and an internship at EPAM Systems, where foundational skills in enterprise software engineering were developed. Olha holds a Master's degree in Computer Science from Kharkiv National University of Radioelectronics, earned between 2008 and 2013.