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Konstantinos Kolios is a skilled Back End Developer with experience at Cognity since March 2022, specializing in Java (versions 11 and 17), Spring Boot, Cloud, Security, and Data JPA, as well as technologies such as Keycloak, Docker, and Oracle DB. Prior to this role, Konstantinos worked at OTS SA as a Junior Full Stack Software Developer, gaining proficiency in Java, Spring Framework, Hibernate, and various front-end technologies including Angular, Javascript, and Typescript. Konstantinos's educational background includes a Master's degree in Informatics from the University of Piraeus and a Bachelor's degree in Public Administration and Finance from Panteion University. Additional experiences include participation as a finalist in the ReGeneration program, and roles in customer service and photography.