Holger Staiger is an experienced IT-Systemadministrator currently employed at PIXOMONDO since September 2017, having progressed from a Junior IT Systemadministrator role. Responsibilities include providing 1st, 2nd, and 3rd Level Support, managing IT assets, overseeing Active Directory infrastructure, and configuring firewall systems. Holger has expertise in server infrastructure installation and maintenance under VMware ESXi for both Windows and Linux environments. Prior experience includes a position as a Fachinformatiker Systemintegration at Mackevision and an internship at the same company, complemented by formal education in IT system integration from BFW Schömberg.