Dionisios Spiliopoulos@dennisspiliopoy1GreeceFollow BadgesProblem Solving CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillWork Experiencedennisspiliopoy1 has not updated employment details yet.Educationdennisspiliopoy1 has not updated education details yet.