Mattias Kõosalu@MKoosaluFollow BadgesProblem SolvingJavaDays of Code CertificationsCertificate: Problem Solving (Basic)VerifiedskillWork ExperienceMKoosalu has not updated employment details yet.EducationMKoosalu has not updated education details yet.LinksMKoosalu has not updated links details yet. SkillsMKoosalu has not updated skills details yet.