Aleksander Mielczarek@aleksander_wald1PolandFollowAboutEducationUniversity of Warsaw BadgesProblem SolvingJava CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillCertificate: Problem Solving (Advanced)VerifiedskillWork Experiencealeksander_wald1 has not updated employment details yet.EducationUniversity of Warsaw