Summary
Overview
Work History
Education
Skills
Certification
Timeline
Generic

Landen Atchison

McKinney,TX

Summary

Experienced with managing enterprise-level IT infrastructures and ensuring system stability and security. Utilizes advanced problem-solving skills to address and resolve critical technical issues efficiently. Strong understanding of networking protocols, cybersecurity measures, and system optimization techniques.

Overview

17
17
years of professional experience
1
1
Certification

Work History

Sr. System Administrator

Global Wafers America
06.2023 - Current
  • Maintained and tuned system and network monitoring tools to ensure SLA adherence and early issue detection.
  • Implemented system hardening standards and enforced group policies to meet security and compliance requirements (HIPAA, NIST, PCI).
  • Administered and maintained Windows and Linux server environment, ensuring high availability and performance across critical business systems.
  • Resolved L2/L3 escalations, performing root cause analysis and implementing long-term fixes in a complex multi-vendor environment.
  • Supported SAN/NAS storage infrastructure, optimizing performance and data availability across departments.
  • Documented system configurations, standard operating procedures, and disaster recovery plans for continuity and team knowledge sharing.
  • Key contributor in building out a state-of-the-art data center within a 1M+ square-foot silicon manufacturing facility.
  • Provided technical support for custom and off-the-shelf applications, ensuring uptime and integration with internal systems.
  • Led system upgrades to enhance performance and security across enterprise environments.
  • Managed server administration, ensuring optimal uptime and reliability for critical applications.
  • Implemented automation scripts to streamline routine tasks, reducing operational overhead.
  • Mentored junior staff on best practices in system management and troubleshooting techniques.
  • Maintained flexible schedule and responded to after-hours and weekend emergencies.

Sr. Systems Specialist

Aligned Data Centers
03.2021 - 05.2023


  • Managed and maintained Active directory (Entra ID) in a hybrid environment
  • Worked with Vsphere for virtualization and server deployment
  • Utilized RMM tools (Syncro) as well as powershell for automation and patching
  • Deployed MS Intune company portal application to the organization and managed as well as packaged software for the company using Intune as well as Flexera Admin Studio
  • Helped drive Cybersecurity initiatives, participated in threat hunting with SIEM (AlienVault USM Anywhere)
  • Regularly revised policy as requested for the company during startup phase
  • Maintained document management system in SharePoint
  • Provided excellent documentation
  • Implemented advanced monitoring tools to improve system reliability and performance tracking.
  • Conducted regular audits of systems architecture, ensuring compliance with industry standards and best practices.
  • Managed Office 365 user accounts, permissions, and access controls across organization.
  • Implemented security protocols to safeguard sensitive data within Office 365 environments.
  • Developed training materials and conducted workshops on Office 365 features for end-users.
  • Led implementation of Group Policy Objects to enhance security protocols across networks.
  • Managed Active Directory user accounts, ensuring accuracy in permissions and access rights.
  • Mentored junior team members on best practices for user management and system configurations.

Enterprise Systems Administrator

Aero Metals Alliance
08.2018 - 08.2020
  • Maintained a Windows Server environment across multiple business entities
  • Maintained O365 tenant, Exchange and Active Directory
  • Monitored system performance and conducted regular audits using monitoring tools, proactively resolving performance bottlenecks and preventing system failures.
  • Managed and maintained backup solutions utilizing a 3-2-1 method
  • Identified inefficiencies in daily operations and introduced automation or policy changes that cut time spent on recurring issues.
  • Administered enterprise systems ensuring optimal performance and reliability across organizational functions.
  • Facilitated training sessions for end-users, enhancing proficiency in enterprise applications and tools.

System Administrator

Trinity Industries
04.2013 - 10.2016
  • Provided Tier 2 and 3 support for a large-scale user base (10,000+)
  • Managed Active Directory, DNS, DHCP, Group Policy, and user access.
  • Efficiently resolved technical issues through thorough troubleshooting, analysis, and problem-solving skills.
  • Managed group policies effectively, ensuring consistent configurations across all systems within the organization.
  • Attended meetings to deliver status reports to key stakeholders.
  • Developed and maintained documentation for Active Directory processes and procedures, facilitating knowledge sharing.
  • Collaborated with IT security teams to enforce compliance with organizational policies and regulatory standards.
  • Created and administered profiles and accounts, also maintaining systems documentation.
  • Configured mailbox limits, retention policies, and storage settings for optimal resource utilization.

Lead Consultation Agent

Geek Squad
06.2012 - 04.2013
  • Identified root causes of issues such as slow performance, malware infections, and software errors, escalating to repair agents as needed.
  • Translated complex technical terms into simple language to educate customers and guide them through solutions with clarity and confidence.
  • Delivered face-to-face technical support for customers, diagnosing and resolving hardware, software, and networking issues across a wide range of devices.
  • Used diagnostic tools and check-in software to document customer issues, device history, and recommended services.

Transmission Systems Specialist (3D1X3)

United States Air Force
11.2008 - 10.2011
  • Managed critical RF communications infrastructure, maintaining 100% operational readiness under high-pressure deployment scenarios.
  • Obtained my A+ certification
  • Responsible for the deployment, configuration, and maintenance of Tactical Local Area Networks (TAC-LAN), ensuring secure and reliable communications in field operations.
  • Recognized for exemplary technical proficiency and for exceptional service and dedication.
  • Implemented cryptographic measures that safeguarded mission-critical systems from breaches, significantly enhancing communication security.
  • Installed, configured, and maintained communication infrastructure including satellite, microwave, and HF/VHF/UHF radio systems.
  • Conducted regular preventive maintenance, troubleshooting, and system optimization to ensure operational readiness and reliability.
  • Coordinated with multidisciplinary teams for seamless integration and deployment of communication systems during military operations and exercises.

Education

Associate of Science - Electronics

Community College of The Air Force
Montgomery, AL
01-2010

Skills

  • Active Directory management
  • Troubleshooting
  • Virtualization
  • Linux administration
  • File system administration
  • Storage management
  • System upgrades
  • Cloud services (Azure)
  • Security protocols
  • Mobile devices
  • Powershell

Certification

Microsoft Certified: Azure Administrator

Timeline

Sr. System Administrator

Global Wafers America
06.2023 - Current

Sr. Systems Specialist

Aligned Data Centers
03.2021 - 05.2023

Enterprise Systems Administrator

Aero Metals Alliance
08.2018 - 08.2020

System Administrator

Trinity Industries
04.2013 - 10.2016

Lead Consultation Agent

Geek Squad
06.2012 - 04.2013

Transmission Systems Specialist (3D1X3)

United States Air Force
11.2008 - 10.2011

Associate of Science - Electronics

Community College of The Air Force

Similar Profiles

CREATE PROFILE