Systems Administrator Active Directory

MARCUS B. DAVIS

**** ********** **. ********** ** 76065

469-***-**** ***********.**@*****.***

Objectives

Multi-faceted professional offering a strong goal-oriented attitude, combined with a technology driven mind and excellent work ethic. A creative thinker, problem solver with the ability to make decisions effectively, while capitalizing on corporate growth. A team player as well as leader that will deliver and drive IT best practices and organizational goals. Highly motivated individual with the ability to maximize the progression and innovation in technology within the organization.

IT Experience

Systems Administrator II (2022-Present) Successfully managing and maintaining both physical and virtual servers, ensuring the highest level of system availability. Providing exceptional service to end users, guaranteeing they have the best experience while performing their job duties. Overseeing Rubrik backups company-wide, adhering to best practices for maintaining successful backups, and ensuring compliance with current supported versions. Effectively managing new user onboarding and departures in Active Directory, maintaining security groups and access control. Created and continue to maintain Active Directory security groups and Microsoft distribution groups. Authored and managed over 30 Standard Operating Procedures (SOPs) to enhance productivity for both my team and end users. Collaborating with team members to troubleshoot and resolve various technology challenges, including but not limited to systems and networking issues.

IT Specialist July (2013- 2022) I provided comprehensive technical support to over 200 users across 10 locations. My responsibilities encompass troubleshooting and resolving issues for desktops, laptops, network printers/scanners, tablets, mobile phones, and VoIP phones. I manage the Mitel phone system and Active Directory, configure switches and Group Policy Objects (GPO), and address problems with various software programs such as Microsoft 365, Zoom, GuestVision, School Docs, Campus Vue, Unifi, and VPN. I also perform remote troubleshooting via VNC or remote desktop and oversee systems like Hyper-V, PDQ Deploy, Sign Now, DocuSign, Oaisys, and Barracuda. Additionally, I conduct technology training sessions to enhance user proficiency.

Technology Summary

Virtualization: Hyper V, VMware vSphere, LANDesk, Citrix, Nutanix, VCenter 5.5, 6.5, 7.

Services: Active Directory, Remote Desktop, SolarWinds, Nagios, Group Policy, MS Office 365

MS Exchange, PowerShell, Azure/Entra, OME, InfoBlox

Systems: Windows 7-11 Mac OSX, Linux, Android Windows Server 2008r2-2022

Software: Zoom, PDQ Deploy, Acronis, Ghost, DocuSign, SignNow, GoAnywhere, IBM Power9,

Nimble, Rubrik, School Docs, TeamViewer, Mitel, Duo, Authenticator

Network: LAN/WAN, Vlans, VoIP, wireless Aps, Cisco and Netgear switches and routers,

VPN (Zscaler, FortiClient, Windows), Routing Protocol RIP, BGP, OSPF, DNS, TCP/IP, OSI

Antivirus: Webroot, CarbonBlack, SentinelOne, CrowdStrike

Ticketing: Helpspot, Track It, Ivanti, ServiceNow

Work Experience

Systems Administrator March 2025 – Present

BNSF Railway 2650 Lou Menk Dr. Fort Worth TX 76131

Stand up new virtual and physical Windows Servers 2019-2022 and deploy after Imaged and configured.

Successfully managing DNS cleanup on multiple subnets, ensuring accurate entries within the network.

Successfully configure Dell iDRACs on PowerEdge servers, enabling efficient remote management and monitoring.

Configuration of servers within BNSF’s campus testing data center, ensuring performance before production.

Successfully manage virtual servers through vSphere as well as Nutanix.

Systems Administrator II September 2022 – February 2025

Ryan LLC 13155 Noel Rd. # 100, Dallas TX 75240

Stood up new virtual Windows Server 2016-2022 and deployed after loading applications and security scans.

Successfully managed and maintained Active Directory for 5000+ users ensuring status of employment.

Successfully managed Rubrik backups, configured SLAs, volumes, etc. while running the latest version.

Managed Workday task that sync with Active Directory for end users to have needed access.

Successfully migrated data from remote servers to central servers for an enhanced experience.

Successfully maintain a low Ivanti ticket queue while providing superior service to end users.

Managed and maintained 500+ virtual servers through vSphere successfully.

Successfully implemented changes to the environment through the CAB process.

Successfully managed permissions within Active Directory and Azure ensuring needed access.

IT Specialist July 2013 – August 2022

Ogle School Management LLC 2208 W. Park Row Dr. Suite 100 Arlington TX 76013

Help Desk, first contact when users are experiencing technical issues via phone, ticket, IM or text.

Break fix, desktops, laptops, tablets, mobile phones, network printers as well as configure VoIP phones etc.

Manage and work tickets as they come in daily while actively working projects to completion.

Terminate and run CAT5/6 cables, connect and mount TVs, projectors and security cameras.

Successfully created images and deployed images using Acronis True Image or Ghost and PDQ Deploy.

Provide technical training to end users in a classroom setting to help better their work experience.

Work in a team environment to enhance productivity and company wide growth.

Desktop/ laptop repair, including: screen, fan, hard-drive and power supply replacement,

Manage wireless network system at each location using UniFi.

Successfully maintained Active Directory for 200+ end users.

Troubleshoot applications problems remotely on laptops and desktops successfully.

Successfully managed Oaisys, as well as it’s audio recordings between end users and potential clients.

Teacher/Campus Technology August 2010 – July 2013

CHISD West Intermediate 1533 High Pointe Ln, Cedar Hill, TX 75104

Science and Social Studies teacher and served successfully as campus technology leader.

Insurance Adjuster June 2006 – September 2009

Travelers Insurance 1301 E. Collins Blvd, Richardson, TX 75081

Negotiated and settled property damage claims, while overseeing evaluations and repair estimates.

Auto Collections April 2004 – August 2005

Nuvell 1301 E. Collins Blvd, Bedford, TX 75081

Successfully Provided superior internal and external customers service to past due customers.

Education

Texas State University, Of San Marcos

Graduation Date December 2003 B.A. Communication Design

Certifications Completed: CompTIA A+, Network +, CCNA

References

Upon Request

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