Mario Tessmann@mario_tessmannGermanyFollow BadgesProblem SolvingCPPJavaPythonDays of JSSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillCertificate: Python (Basic)VerifiedskillCertificate: Python (Advanced)VerifiedskillCertificate: SQL (Basic)VerifiedskillCertificate: SQL (Intermediate)VerifiedskillCertificate: SQL (Advanced)VerifiedskillWork Experiencemario_tessmann has not updated employment details yet.Educationmario_tessmann has not updated education details yet.