Vadim Elkin@velkinFollow BadgesProblem Solving CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Advanced)VerifiedskillWork Experiencevelkin has not updated employment details yet.Educationvelkin has not updated education details yet.Linksvelkin has not updated links details yet. Skillsvelkin has not updated skills details yet.