Piotr Kalański@piotr_kalanskiPolandFollow BadgesProblem SolvingJavaPythonDays ofStatisticsSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Python (Basic)VerifiedskillWork Experiencepiotr_kalanski has not updated employment details yet.Educationpiotr_kalanski has not updated education details yet.