Jan Henkel@jan_henkelGermanyFollow BadgesProblem SolvingJavaSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillCertificate: Problem Solving (Advanced)VerifiedskillWork Experiencejan_henkel has not updated employment details yet.Educationjan_henkel has not updated education details yet.