• Provide comprehensive desktop, server, and application support within Microsoft AD, Exchange, and MS O365 environments, ensuring smooth operations and rapid issue resolution.• Install and configure servers, networking equipment, and other IT devices, with a deep understanding of the interplay between switches, hubs, patch panels, and network nodes.• Manage Windows desktop operating systems, troubleshoot TCP/IP issues, and maintain Internet connectivity, with a strong grasp of routers, DHCP, DNS, AD, VPN, and firewalls.• Support the migration and deployment of new server infrastructures, both on-premise and cloud-based, including network management and configuration.• Deploy tailored IT solutions to client sites, leveraging experience in outsourced IT within B2B and B2E environments.• Provide support across various operating environments (iOS/OSX/Windows/Linux) and IP phone systems (3CX, Cisco Broadsoft UCAAS).• Create comprehensive internal documentation, including detailed guides and time management resources, to support team processes and enhance operational efficiency. Additionally, develop clear, user-friendly guides for customers to ensure they can easily understand and use the services provided. This involves maintaining accuracy, clarity, and accessibility in all documentation, tailored to both internal and external audiences.

• Level 1 and 2 Support for VAS and SMS Platforms: Provided comprehensive support for both internal and international clients, ensuring reliable operation and resolving issues efficiently.• Analyzed and resolved production issues in proprietary applications, implementing improvements and escalating critical concerns as needed.• Delivered support for BI platforms and internally developed applications (Java, JSON, Ruby), and managed code migrations to maintain synchronized functionality.• Handled telecom issue analysis and generated reports for customers using MySQL, InfiniDB, MongoDB, and PostgreSQL, while documenting all configuration changes.• Supported the Pentaho BI platform, developed ETL jobs, and monitored system performance metrics, ensuring reliable operations.• Monitored internal systems 24x7, developing automation scripts to enhance support processes.• Worked with development teams and clients to ensure application performance, and created clear documentation for internal and customer use.

• Managed and supported IT infrastructure, ensuring optimal performance and reliability.• Led and executed projects to enhance and upgrade internal customer infrastructure.• Administered and implemented network systems and Linux services, including DHCP, Proxy SMP, iptables, LDAP, PDC, and FTP.• Consolidated projects and managed virtual environments using Citrix XenServer 4.2 and 4.3.• Implemented and configured Zabbix for comprehensive system monitoring and performance management.• Directed restructuring projects involving VLAN segregation, spanning tree, and link aggregation, utilizing equipment from Enterasys, Cisco ASA Firewall, HP-3COM, and Extreme Summit.• Oversaw technical support functions and managed relationships with service providers to ensure high-quality support and resolution of issues.

• Managed and supported IT infrastructure across the holding group, ensuring stability and performance.• Led and executed projects to enhance and optimize internal infrastructure.• Administered and implemented systems, network infrastructure, and Linux servers, including CentOS 5 and Debian 6, to maintain operational efficiency.• Deployed and configured Zabbix for effective system monitoring and performance tracking.• Managed and administered Microsoft Active Directory and Terminal Services servers.• Implemented Asterisk for VoIP services with PBX integration, enhancing communication capabilities.• Oversaw and mentored trainees, facilitating their development and integration into the team.• Mapped and improved internal processes to streamline operations and enhance efficiency.

• Coordination of a technician team in the support of stations and servers customer (Caixa Econômica Federal);• Assigning calls and managing the logistic of the team around the city;• Technical support (Level 2);• Interventions and fines deals with the contractor;• Mapping and improvement of internal processes regarding backups, calls, laboratory and parts management.

• Contributed to a server consolidation initiative using VMware ESX and ESXi, optimizing space and energy resources within the data centre, which involved approximately 2,700 physical servers.• Implemented high availability and Distributed Resource Scheduler (DRS) for both development and production pools across data centers in Brazil and Miami, USA, ensuring balanced resource allocation and system reliability.• Managed the conversion of physical machines to virtual machines (P2V) and utilized VMware vCenter for enhanced management and flexibility.• Executed migration of storage areas including SAN, NAS, and iSCSI to support a virtualization project, improving data management and access.• Developed and supported documentation and operating procedures to ensure consistent and effective IT practices.• Configured, supported, and troubleshot HP, Dell, and IBM servers, as well as virtual machines, to maintain optimal system performance and resolve technical issues.

• Consolidated the email platform onto VMware ESXi, enhancing efficiency and resource management.• Designed and executed structured cabling and telephony systems to improve network infrastructure and communication capabilities.• Managed the configuration and deployment of switches and wireless routers, optimizing network performance and connectivity.• Implemented and configured Subversion (SVN) and Trac for version control and project management.• Deployed and managed Bacula as a backup solution, ensuring reliable data protection and recovery.• Administered and supported the email system, including Postfix and Oracle Collaboration Suite (OCS), as well as PDC (Samba) and FTP services.• Provided administration and support for Windows 2003/2008 and Linux (RHEL, SUSE, and CentOS) environments, ensuring stable and secure system operations.• Applied ITIL v3 principles to enhance service desk management practices, improving incident management, change management, and overall IT service delivery.

• Supported the successful migration from a legacy ERP system to the new RM System, ensuring a seamless transition and minimal disruption to business operations.• Provided remote technical support for all branches across the state, resolving issues efficiently and maintaining operational continuity.• Administered and supported servers Windows NT and local network infrastructure, ensuring reliable and secure IT operations.• Oversaw and managed access policies to protect sensitive information and ensure appropriate access control.• Managed the backup server using SOS Backup, ensuring data integrity and availability through effective backup solutions.• Installed, maintained, and repaired computer hardware and software, including Windows 95, 98, Millennium and XP, ensuring optimal performance and promptly addressing technical issues.