Mark Marshall@mark_marshallgpSolutions EngineerUnited KingdomFollow BadgesProblem SolvingDays of JS CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillWork Experiencemark_marshallgp has not updated employment details yet.Educationmark_marshallgp has not updated education details yet.