Stephan Zalewski@stepahnGermanyFollow BadgesProblem SolvingPythonRuby CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Ruby (Basic)VerifiedskillCertificate: Ruby (Intermediate)VerifiedskillWork Experiencestepahn has not updated employment details yet.Educationstepahn has not updated education details yet.