Grzegorz Marczak@gisel88Follow BadgesProblem SolvingJava CertificationsCertificate: Problem Solving (Basic)VerifiedskillWork Experiencegisel88 has not updated employment details yet.Educationgisel88 has not updated education details yet.Linksgisel88 has not updated links details yet. Skillsgisel88 has not updated skills details yet.