Michał Jastrząb@jarzejFollow BadgesProblem SolvingJavaPythonDays of CodeSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillWork Experiencejarzej has not updated employment details yet.Educationjarzej has not updated education details yet.Linksjarzej has not updated links details yet. Skillsjarzej has not updated skills details yet.