Jan Kowal@karl11Follow BadgesProblem SolvingJavaDays of CodeSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillWork Experiencekarl11 has not updated employment details yet.Educationkarl11 has not updated education details yet.Linkskarl11 has not updated links details yet. Skillskarl11 has not updated skills details yet.