GERSO M. GUILLEN

***** * ****** ***, ** *****

Phone: 726-***-****

Email: advb2m@r.postjobfree.com

LinkedIn: linkedin.com/in/gerso-guillen

PROFESSIONAL SUMMARY

Accomplished, results-oriented, and bilingual IT professional, highly knowledgeable in computer repair and operating systems. Over 10 years’ experience in server management, resolving tickets from Tier 1 to 3, and network administration, working with a myriad of technologies. Information Technology experience includes extensive training in identifying security and privacy threats while addressing business vulnerabilities.

Troubleshooting

Active Directory

Ticketing System

Call Center Triage

iCloud, Virtual Migrations

Cisco IOS, TCP/IP, LAN, WAN, VLAN, VPN, VOIP, Wi-Fi

Microsoft Windows, Mac OSX.

Infrastructure engineering

Microsoft Office 365

Remote Desktop Utility

Wired & Wireless Network

Field tech for Mac OS devices

Linux, CRM

Access Database creation

Networking

Cisco routers and Cisco switches

HTML, CSS, JavaScript, jQuery, Java

Python, PHP, C#, C++ (Swift), SQL, and R

Visual Basic Applications

EMPLOYMENT HISTORY

ACI Learning – San Antonio, TX Oct 2020 – Present

Computer User Networking Specialist – Training Internship

Internal Tier 2 and 3 support for Active Directory, Deployment, Windows Servers, and Cisco switching.

Ensured physical security & common attacks while securing the wired and wireless local network.

Diagnosed, troubleshot, and resolved a wide range of software, hardware, and network issues.

Created and managed end user accounts using Active Directory, and managed upgrades, imaging, and the deployment of new hardware.

RAICES – San Antonio, TX Oct 2019 – Jun 2021

IT Specialist

Field technician that specialized in Mac operating systems and some Windows but mainly deployment of Macs via Jamf MDM

Provided triage services for ticketing system and delegated tickets to tier 1 and 2 while taking on tickets that only I would be able to handle in relations to the network and availability expectations.

Internal support for IT Organizer for SharePoint and Windows Server infrastructure.

Engineered all servers to maintain a hybrid infrastructure in migration from Active Directory to Azure Active Directory for PCs and Jump Cloud for Macs.

Provided training for G Suite and created documentation for internal staff training.

Made Goods – City of Industry, CA Oct 2018 – Jul 2019

Desktop Engineer

Onboarding of Mac user for the graphical design department as well as on the field tech for these devices

Created and maintained all documentation for deployment of workstation/laptop/tablet,

Troubleshot PC issues and resolved various tickets ranking from VIPs, to contractors, to internal end-users.

Provided support for network hardware/software, deployed PC and Mac environments.

Programmed microcontroller scanners for the warehouse for logistics to operate with more efficiency.

Patched Servers on patch Tuesdays.

AMETEK – HSC – Rosemead, CA Feb 2015 – Oct 2018

Systems Admin

Held various meetings with Tier 4 CDW contractors to inquire about best methods to resolve Tier 3 escalations regarding patching, migrations, and standardization.

Deployment of some macs but mainly windows devices are used.

Monthly server maintenance to Windows server 2012 R2 on a Cisco blade either remotely or in the server room.

Performed research and vetted three fire retardant companies to provide fire suppression and fire control services.

Established rapport with and provided oversight for UPS, FedEx, and 3rd party companies to make sure that Failsafe procedures were tested as well as ANSULAR canister had maintenance to code in server room.

Updated various remediation on printers, security control system, CNC machines, and other network devices to harden systems.

Kept the MDT server up to date as new laptops and desktops were used to standardize deployment from a custom thin ISO image of Windows 10 Pro.

EDUCATION

ACI Learning – San Antonio, TX Computer User Support Specialist Nov 2021

ITIL, A+, Network+, Security+, CCNA, CND, CEH

University of Phoenix – Phoenix, AZ BS: Information Technology Jan 2019

University of Phoenix, Phoenix, AZ Associates of Science Dec 2015

CERTIFICATIONS

Splunk Fundamental 1, Windows Server 2019: Configure Hyper-V, Windows Server 2019: DHCP and DNS, Windows Server 2019: Active Directory Certificate Services, IT Service Desk: Customer Service Fundamentals, Learning Virtualization, Learning SQL Programming, QL Essential Training, and Networking Foundations: Protocols/CLI Tools.

Contact this candidate