Koen Elsdijk@koenstFollow BadgesProblem SolvingDays of CodeDays of JSSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillWork Experiencekoenst has not updated employment details yet.Educationkoenst has not updated education details yet.Linkskoenst has not updated links details yet. Skillskoenst has not updated skills details yet.