Krzysztof Celniaszek@krzcelBack-end developerPolandFollow BadgesProblem SolvingCPPPythonDays of CodeSql CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Python (Basic)VerifiedskillCertificate: SQL (Basic)VerifiedskillWork Experiencekrzcel has not updated employment details yet.Educationkrzcel has not updated education details yet.