Juan David Z.

PROFESSIONAL SUMMARY Systems Engineer with a Specialization in Telematics and more than 12 years of experience in technical support, IT infrastructure administration, and Microsoft technologies. Specialized experience in Microsoft 365, Exchange Online, Microsoft Entra ID, Active Directory, and Windows Server across organizations of different sizes. Participated in approximately 3 large-scale migration projects for organizations ranging from 2,000 to 10,000 users, including Exchange Server 2010 to Exchange Online migrations and Active Directory on Windows Server 2012 to Microsoft Entra ID migrations. Additional experience supporting Microsoft Purview and Microsoft Defender, as well as administration and troubleshooting using PowerShell. Experience administering Active Directory in an environment of approximately 50,000 users, Exchange Server and Exchange Online in hybrid environments, identity synchronization, Windows Server, Hyper-V, DNS, DHCP, GPO, WSUS, and System Center. CORE COMPETENCIES Microsoft 365 | Exchange Online | Exchange Server | Microsoft Entra ID | Active Directory | AD Connect / AD Sync / DirSync | Windows Server | Hyper-V | PowerShell | Teams | SharePoint | OneDrive | Microsoft Purview | Microsoft Defender | DNS | DHCP | GPO | WSUS | System Center | IIS | File Server / DFS / DFSR | Firewalls | Anti-spam | Virtualization | Migrations | Troubleshooting | Incident Management | Remote Support PROFESSIONAL EXPERIENCE MICROSOFT / UPWORK Microsoft 365 Support Engineer — Microsoft 365 Ambassador | November 2018 – Present • Provide specialized Microsoft 365 technical support to users and organizations of different sizes, from small environments to organizations with more than 10,000 users. • Diagnose and resolve incidents involving Exchange Online, Microsoft Entra ID, SharePoint, Microsoft Teams, and OneDrive. • Provide technical support for Microsoft Purview and Microsoft Defender. • Advise users on adoption and best practices to maximize the value of Microsoft 365 services. • Provide installation, activation, and troubleshooting support for Microsoft 365 desktop applications on Windows and macOS. INDRA SISTEMAS Windows Server & Microsoft 365 Infrastructure Administrator | November 2015 – November 2018 • Administered Active Directory in an environment of approximately 50,000 users. • Administered Windows Server infrastructure and services including File Server, Failover Clustering, and Hyper-V. • Administered Exchange Server 2010 and Exchange Online in a hybrid environment. • Participated in troubleshooting issues associated with user migrations to Exchange Online. • Administered identity synchronization between Active Directory and Microsoft Entra ID using AD Sync. • Performed Windows Server infrastructure administration and tuning. • Develop PowerShell scripts to automate administrative tasks and facilitate troubleshooting in Exchange hybrid and Microsoft 365 environments. • Developed a PowerShell script to automate remote mailbox creation in Exchange hybrid environments. • Developed a PowerShell script to extract and store Message Trace and mail-flow logs locally, facilitating analysis of mail-flow incidents. CORPORACIÓN COLEGIO LOS NOGALES Servers & Network Administrator | June 2010 – May 2015 • Administered the organization's server and network infrastructure. • Administered Active Directory, Microsoft Endpoint, System Center, and Exchange Server 2007. • Provided Windows infrastructure and network support to organizational users. • Administered firewall policies and configuration. • Participated in the migration of users from Exchange Server 2007 to Google Workspace. INSTITUTO DE PARTICIPACIÓN Y ACCIÓN COMUNAL — IDPAC Microsoft Infrastructure Administrator | 2009 – 2010 | 6 months • Administered Windows Server infrastructure, including Active Directory, IIS, and WSUS. • Administered Active Directory, including users, computers, and directory services. • Administered WSUS for update management and distribution across servers and workstations. • Administered File Servers and Print Servers. • Administered McAfee antivirus infrastructure across servers and organizational endpoints. • Provided support and administration for Microsoft infrastructure services. CORPORACIÓN COLEGIO LOS NOGALES IT Infrastructure Administrator / Support Engineer | September 2008 – September 2009 • Provided Windows systems and network support to users. • Participated in the administration of servers, Active Directory, Microsoft Endpoint, System Center, and Exchange Server 2007. • Administered firewall policies and configuration. • Handled incidents involving infrastructure, servers, networks, and Microsoft services. • VISION SOFTWARE • IT Support Technician | June 2007 – June 2008 • Provided IT support to users at Bodytech operational and administrative locations. • Provided remote support for Windows systems and networks. • Handled technical incidents and requests involving IT infrastructure and workstations.