twirl-team@yandex.ru Sergey Konstantinov@twirlFollow BadgesProblem Solving CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillWork Experiencetwirl has not updated employment details yet.Educationtwirl has not updated education details yet.Linkstwirl has not updated links details yet. Skillstwirl has not updated skills details yet.