Erwin Neufeld@erwinnvRussiaFollow BadgesProblem SolvingC language CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: C (Basic)VerifiedskillCertificate: C (Intermediate)VerifiedskillWork Experienceerwinnv has not updated employment details yet.Educationerwinnv has not updated education details yet.