Karol Sierzega

Karol Sierzega is a seasoned database administrator with extensive experience in Oracle database management spanning over a decade, currently serving as a Senior Oracle Database Administrator at Zürcher Kantonalbank since July 2019. Sierzega has held senior DBA roles at Credit Suisse and PRO Informatik, with earlier positions at GTECH, Hewlett-Packard, and Citibank. Proficient in managing various Oracle database environments (9i, 10g, 11g, RAC), Sierzega specializes in database administration, performance tuning, SQL scripting, and security management. Educational credentials include a Master’s degree in Database and Data Mining from the Polish-Japanese Academy of Information Technology, completed between 2002 and 2007.