Sergiy Lelyushkin@lelsergSoftware EngineerFollow BadgesProblem SolvingCPPJavaPythonSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillWork Experiencelelserg has not updated employment details yet.Educationlelserg has not updated education details yet.Linkslelserg has not updated links details yet. Skillslelserg has not updated skills details yet.