Piotr Gaczkowski@doomhammerPolandFollow BadgesProblem SolvingCPPJavaPythonDays of CodeDays of JSDays ofStatisticsSqlC languageRuby CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Java (Basic)VerifiedskillCertificate: Python (Basic)VerifiedskillCertificate: Ruby (Basic)VerifiedskillCertificate: Ruby (Intermediate)VerifiedskillCertificate: Java (Intermediate)VerifiedskillCertificate: C++ (Basic)VerifiedskillCertificate: SQL (Basic)VerifiedskillWork Experiencedoomhammer has not updated employment details yet.Educationdoomhammer has not updated education details yet.