Sergey Markizov@arh11msnFollow BadgesProblem Solving CertificationsCertificate: Problem Solving (Basic)VerifiedskillWork Experiencearh11msn has not updated employment details yet.Educationarh11msn has not updated education details yet.Linksarh11msn has not updated links details yet. Skillsarh11msn has not updated skills details yet.