**Neighborhood: Downtown** **Work schedule:** 8:00 AM to 5:48 PM, Monday through Friday. **What will be your responsibilities:** Administer Windows and Linux servers in on-premises data centers, ensuring stability and performance. Manage and maintain directory and identity services: Active Directory, DNS, DHCP, and GPO. Configure, administer, and monitor network resources: TCP/IP, VLANs, VPNs, and corporate firewalls. Work with switches, routers, and enterprise Wi-Fi infrastructure. Administer virtualized environments on VMWare and Hyper-V, including management of virtual machines, snapshots, clusters, and high availability. Ensure environment security, including access control, corporate antivirus policies, and critical patch application. Monitor and respond to vulnerabilities, actively participating in incident and problem management. Use backup, monitoring, and performance analysis tools such as Veeam, Zabbix, and Grafana. Engage in ITIL processes: incidents, changes, problems, and configurations. Create and maintain technical documentation, architecture diagrams, and operational procedures for the infrastructure. **What you need to qualify for this opportunity:** Solid experience in Windows and Linux server administration. Advanced knowledge of Active Directory, DNS, DHCP, and GPO. Proficiency in networking and protocols (TCP/IP, VLANs, VPN, and firewalls). Proven experience with virtualization (VMWare and Hyper-V). Practical experience monitoring and resolving critical infrastructure incidents. **Desirable differentials** Experience with Veeam, Zabbix, and Grafana. Knowledge of information security management (ISO 27001, NIST, LGPD). Ability to create, review, and document technical processes clearly and systematically. **What the company offers:** Meal allowance; Transportation allowance or parking; Unimed Health Plan; Childcare assistance; Life insurance; Corporate Education Center; Partnerships with educational institutions; Trust Grocery; Day Off; Oea Saúde.