Ricardo Barajas

Provided Tier 1 and 2 support for users on Windows, Windows Server, and iOS platforms. Managed users and access in Azure Active Directory (Micra tenant). Administered endpoint devices using Microsoft Intune,Jamf, for compliance and remote support. Resolved incidents efficiently through Jira Service Desk and BMC Helix. Skills: Azure Active Directory · Intune · Incident Management · Root Cause Analysis · Mobile Device Management · Cloud Computing · Jira · Help Desk Operations · English · Business Continuity · SNMP · SMTP · Troubleshooting · Analysis · SLA Compliance

Provided IT consulting and hands-on support across multiple areas of the organization, covering infrastructure, end-user support, and system administration. Administered Windows Server environments (2003–2016), Active Directory, and Exchange Server (2003–2016) for internal users. Managed network infrastructure including VLANs, VPN connections, and wireless configurations. Deployed and maintained virtualization platforms using VMware and VirtualBox. Supported IP telephony systems (PBX) and video conferencing tools. Administered NAS and SAN storage systems, as well as security and access control systems. Provided support across Windows (XP–10), macOS, iOS, Android, and Blackberry devices. Managed Microsoft 365 and Office suite deployments.

Operating systems: Windows 95,98,2000, XP and Windows 7, Windows 8, Windows 10, MAC OS, Windows server 2003 and 2008, Android, IOS(Mac), Windows mobile, Blackberry, Basic Linux (Debian, Ubuntu, etc. ) • Exchange servers 2003 and 2010,2012,2016 Active Directory policies and users in Windows Servers Citrix Servers •IP Telephony (PBX) •Networks Connections VPN Vlan's Wireless • Virtualization with VMware Virtual Box platforms • Tools Microsoft office 2016, 2010.2007 ,2003 and open office, office 365 • NAS and SAN storage • Video Conferences • Security systems • Access systems

Resolved support tickets by efficiently addressing reported system issues. Performed troubleshooting on Windows Server environments to identify and fix root causes. Reviewed and evaluated security patch versions prior to deployment. Worked closely with the cybersecurity team to coordinate and ensure secure patch implementations

Managed IT budgets and project delivery for the headquarters and regional offices across Chile, Colombia, and Brazil. Negotiated with telecom providers to secure efficient and cost-effective services. Led regional procurement of hardware and software aligned with LATAM operational needs. Oversaw the implementation of key infrastructure projects: PBX (Elastix, Asterisk), VPNs, VLANs, Windows and VMware servers (vCenter), NAS/SAN storage (NetApp, FreeNAS), disaster recovery plans, and Office 365. Provided Tier 3 technical support and direct assistance to executive management. Maintained and supported a broad range of systems: Windows, macOS, Exchange Server, remote access tools, Active Directory, Citrix Servers, and PBX systems. Configured and managed virtualization platforms, video conferencing systems (Lifesize, Huawei), surveillance (Axis), access control systems, and mobile device fleets (Android, iOS, Windows Mobile, Blackberry). Familiar with Linux-based systems, Cisco hardware/software (intermediate), and Check Point firewalls (basic). Performed market evaluations to recommend and test new technologies to enhance IT operations.

Managed IT operations for 20 fuel stations, supporting dispenser control systems and IT infrastructure across remote sites and corporate headquarters. Led and supervised a small team covering central and southern regions of the country. Oversaw implementation and integration of new equipment and systems in service stations. Administered operating systems (Windows 95/98/2000/XP) and Windows Server 2003/2008 environments. Managed SQL Server instances and performed network administration per site. Deployed and maintained VLAN-based interconnectivity with HQ. Evaluated dispatcher software and provided remote technical support as needed.