Piotr Sobczyński@ps_xaosPolandFollow BadgesProblem SolvingJavaPythonDays of CodeSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Problem Solving (Intermediate)VerifiedskillWork Experienceps_xaos has not updated employment details yet.Educationps_xaos has not updated education details yet.