Manage and troubleshoot Windows and Linux servers, including CentOS, Ubuntu, and Red Hat. Configure and maintain virtualization environments with a focus on VMware technologies such as vSphere, vCenter, and ESXi. Administer Domain Controllers, including Active Directory, DNS, Group Policy, and Windows Failover Clustering to ensure high availability. Configure Layer 3 switches, VLANs and segmented network infrastructure. Develop and implement monitoring solutions using tools such as Zabbix and Nagios. Manage backup solutions with HPE StoreOnce and Veeam. Configure and secure TCP/IP network protocols (DHCP, DNS, FTP, LDAP, SSL, SSH, SFTP). Maintain servers (Linux/Windows) including Active Directory, version control repositories, and web servers (Apache/Nginx, Docker). Manage backups, file restoration, disaster recovery, system builds, hardware maintenance, automation, filesystem housekeeping, application installation. Tune performance and ensure high availability through effective infrastructure design and monitoring/reporting tools. Create and maintain accurate deployment documentation and infrastructure diagrams. Proficient in Windows and Linux patching and patch management. Monitor and document all configuration changes regarding settings and policies. Apply security best practices related to server infrastructure. Manage infrastructure operations and change management processes. Expertise in network architecture and design. Ensure compliance with security regulations and relevant industry standards (ISO 27001, PCI DSS). Provide technical support to other departments and teams. Extensive hands-on experience with VMware and virtualization environments, particularly using ESXi and vCenter.