Windows Server Administration:- Configuration and maintenance of Windows Server 2012 R2 and Windows Server 2019/2022.- Daily tasks include managing Active Directory Domain Services (AD DS), Active Directory Federation Services (AD FS), Domain Controller (DC), DNS Server, DHCP Server, File Server, Group Policy Object (GPO), Print Server, Web Server, and Windows Server Update Services (WSUS).- Proficient in Microsoft 365 admin center, Microsoft Exchange admin center, Microsoft Teams, Microsoft OneDrive and Microsoft Entra admin center.- Experienced with PowerShell scripting and Hyper-V virtualization.Networking and Security:- Deployment and management of OpenVPN for secure remote access.- Monitoring network infrastructure using Zabbix and SNMP.- Configuration and administration of .- Implementation and administration of Trend Micro Apex One antivirus server.Linux Administration:- Setup and maintenance of Linux servers, including VMs and containers using QEMU-KVM and LXC.Other Skills:- Knowledge in OpenVpn / Aker Firewall / FortiNet / FortiGate configuration for network security.

Server Administration:- Managed Windows servers versions 2003 and 2008 (daily tasks with Active Directory, DNS, DHCP, Domain Controller, Hyper-V, and WMWare ESX Server.- Managed Exchange Server 2010 migration with mailbox quotas to a new domain.Backup and Security:- Administered backup server and daily routines using BrightStor ARCserve Backup (CA) and later with Backupexec (Symantec).- Implemented and managed Symantec Endpoint Protection 12 antivirus server.Network Administration:- Coordinated the implementation of a structured network involving multiple buildings.- Led the fiber optic redundancy project and managed Cisco network.Wireless Networking and Telephony:- Installed, configured, and maintained wireless network for remote site.- Configured extensions in VoIP central (Dígitro NGC Evolution) and PABX AVAYAProject Management:- Coordinated the implementation of radio communication project with Motorola equipment, including repeater assembly for long-range communications.- Managed the radio link service for Telephony and Data (E1/DDR).- Oversaw the expansion/implementation of cellular coverage, including indoor cellular repeater installation.Vendor Management:- Contracted suppliers for structured network construction, fiber laying/fusion.- Managing the expansion and implementation of mobile coverage including indoor coverage.Access Control and IT Contracts Management:- Coordinated the access control project, including application server configuration and maintenance of access gates and time clocks on the network (Foracesso/Forponto/TASK)- Managed IT contracts (fixed/cellular telephony, data link, radio communication, and printer leasing), focusing on cost reduction and service improvement.Financial Management:- Experience in developing OPEX and CAPEX budgets for IT projects.Team Leadership:- Provided support to users of DATASUL system (ERP).- Led the IT team, overseeing their activities and ensuring effective project execution.

Customer Service for Corporate Clients:- Provided support to corporate clients for voice services (E1 Digital Link, DDR), data transmission (VPN, dedicated Frame-Relay link), Corporate Internet, and Voice over IP (VoIP), handling installation, maintenance, and customer support.Operation of Access Equipment:- Managed ATA/IAD (VoIP), Huawei/Cisco routers, HDSL/ADSL and Optical modems. Utilized testing equipment such as EDT (E1 Data Tester) and Sidekick.On-call Responsibilities:- Responded to on-call incidents, working with cabinet equipment (UE9K, UE3K, ZHONE, TN1C) / sites / network.

Continued Support for NET Cable TV (now Claro Brasil):Despite the IT outsourcing, I continued to support NET Serviços de Comunicação S/A, which is currently known as Claro Brasil. In August 2003, I was chosen to serve VIP clients including Telefônica (Telefônica Empresas / Terra), Xerox do Brasil, and NET in Brasília.Network Administration and User Support:-Administered and maintained networks using Novell, Windows NT4.0, 2000, and XP.-Provided both local and remote support for over 150 employees across four sites, ensuring seamless IT operations.-Managed and configured connectivity equipment such as hubs, switches, and routers to maintain optimal network performance.

Transition to EDS after NET's IT Outsourcing:- In July 2002, with the outsourcing of NET's IT department, all employees were transferred to EDS. I continued my role until August 2003, when I was tasked with serving VIP clients Telefônica (Telefônica Empresas / Terra) and Xerox do Brasil, in addition to NET Brasília.Network and System Administration:- Administered Novell Netware Server, Win 9x Workstations, Win NT4.0, and 2000 Server.- Provided local and remote user support.- Assembled and maintained computers and printers.- Maintained structured cabling and managed connectivity equipment (hubs, switches, routers, etc.).- Supported management applications (Vantive, Sigma, Siebel, Interquadram, EIS, JDEdwards, GED).- Managed backup server (Arcserver 6).Technical Support and Leadership Roles:- Technical Support Technician from 1995 to 1996.- Led a team of 15 Technical Support Technicians from 1996 to 1999.- Coordinated a team of 6 External Network Technicians from 2000 to 2001.Project Management and Quality Assurance:- Configured encoded channels on decoder equipment.- Made signal level improvements in External Network projects using AutoCAD drawings.- Redesigned network projects (AutoCAD) to accommodate new clients.- Negotiated with building managers for construction/reconstruction of subscriber infrastructure (backbone).- Contributed to the development of Quality Documentation and ISO 9000/9002 and 5S.- Activated return band for Vírtua (Broadband Internet).- Negotiated with clients regarding damage caused by violated decoders.Note: NET Serviços de Comunicação, has been integrated into Claro Brasil, a leading telecommunications provider.