Christian Kreisel@off_christian_kProgrammerGermanyFollow BadgesProblem SolvingCPPJavaPythonDays of CodeDays ofStatisticsSqlC language CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Java (Basic)VerifiedskillWork Experienceoff_christian_k has not updated employment details yet.Educationoff_christian_k has not updated education details yet.