Tristen Mendenhall
Warner Robins,GA
Summary
Air Force veteran with an active Top Secret Security Clearance and a solid foundation in Information Technology. Experienced in supporting secure, mission-critical operations with expertise in systems administration, network management, and cybersecurity. Proven track record of delivering reliable technical support and troubleshooting in fast-paced environments to ensure operational continuity and system reliability. Committed to maintaining high standards of data integrity and security protocols, with a strong dedication to leveraging IT skills to provide secure, efficient solutions in support of organizational goals.
Overview
6
6
years of professional experience
Work History
Systems Operations Supervisor
United States Air Force
01.2019 - Current
- Administered and supported critical security and network services such as FW, PROXY, SMCA, ESS, HBSS, EXCH, FILE, and CUCM, ensuring their effective deployment, configuration, and troubleshooting to meet organizational needs.
- Performed installation, configuration, and administration of Domain Controllers and Virtual Domain Controllers, ensuring proper integration with Active Directory, and optimized network security.
- Conducted monthly backups using BEXE, maintaining data protection and availability in alignment with organizational recovery protocols.
- Led the AFRICOM Enterprise Network migration, provisioning 854 user accounts and 176 security groups, and transferring 5 TB of data seamlessly to support operational efficiency across the tactical network.
- Installed, configured, and administered Windows Server operating systems (2012, 2016, 2019, and 2022), optimizing system performance, and supporting ongoing IT infrastructure needs.
- Administered and optimized Linux virtual servers on CentOS, maintaining system stability, security, and performance in a virtualized environment.
- Monitored and addressed security vulnerabilities using ACAS, resolving issues promptly to maintain system security and compliance with organizational standards
Collateral Systems Administrator
United States Air Force
01.2019 - Current
- Conducted monthly security audits and vulnerability assessments across multiple networks, reducing unauthorized access incidents by 25% and ensuring adherence to DoD cybersecurity standards
- Developed and implemented data backup plans, resulting in a 98% data recovery rate during system failures and protecting mission-critical information
- Administered user and computer-group accounts in Active Directory for the Classified Enterprise Domain, overseeing account creation, configuration, and maintenance to support security and operational requirements
- Provided Level 1 and 2 support, resolving over 150 system issues monthly with a 95% customer satisfaction rating, contributing to enhanced user productivity and system uptime
- Maintained comprehensive documentation for system configurations, access permissions, and security protocols, reducing audit preparation time by 35% and ensuring operational transparency.
- Performed client-user file request using standard network protocol used to transfer computer files between a client and server, shared network access, and the proper file permission dissemination. Using Microsoft FTP, ADUC, and PowerShell.
- Led the RHEL server upgrade and automation of security controls across 300 systems, mitigating 523 vulnerabilities and strengthening overall system resilience and security posture
Education
Microsoft Endpoint Configuration Manager: Admin Concepts and Cloud Services -
United States Air Force
01.2024
5CRS - 5th Combat Communication Readiness School
United States Air Force
01.2023
VMware vSphere: Troubleshooting [V7] -
United States Air Force
01.2022
VMware vSphere 6.7: Install, Configure, Manage -
Department of the Army
01.2020
CCAFAL - INFORMATION SYSTEMS MGT
United States Air Force
01.2019
Cyber Systems Operations Security+ Certification -
United States Air Force
01.2019
Cyber Systems Operations Apprentice - Y4I -
United States Air Force
01.2019
Information Technology Fundamentals (ITF) -
United States Air Force
01.2019
Skills
- Network Administration
- Information Assurance
- Risk Management
- Active Directory Management
- Technical Troubleshooting
- Group policy management
- WSUS patch management
- Windows server management
- Remote desktop services
- VMware esxi administration
- Disaster recovery planning
- Network troubleshooting
- Server hardware maintenance
- Exchange server management
- Linux server management
- Firewall configuration
Technicalcompetencies
Microsoft Office Suite 365, Red Hat Enterprise Linux / Cent OS / Microsoft Windows
Notableawards
- Air and Space Achievement Medal, Department of the Air Force, 01/01/23
- Air Force Achievement Medal, Department of the Air Force, 01/01/21
Educationcertifications
- CCAFAL - INFORMATION SYSTEMS MGT, United States Air Force, 01/01/19
- Microsoft Endpoint Configuration Manager: Admin Concepts and Cloud Services, United States Air Force, 01/01/24
- 5CRS - 5th Combat Communication Readiness School - 5CR, United States Air Force, 01/01/23
- VMware vSphere: Troubleshooting [V7], United States Air Force, 01/01/22
- VMware vSphere 6.7: Install, Configure, Manage, Department of the Army, 01/01/20
- E3ABR3D032 00BB - Cyber Systems Operations Security+ Certification, United States Air Force, 01/01/19
- E3AQR3D032 00BB - Cyber Systems Operations Apprentice - Y4I, United States Air Force, 01/01/19
- E3AQR3D032 02AA - Information Technology Fundamentals (ITF) - TJO, United States Air Force, 01/01/19
Timeline
Systems Operations Supervisor
United States Air Force
01.2019 - Current
Collateral Systems Administrator
United States Air Force
01.2019 - Current
Microsoft Endpoint Configuration Manager: Admin Concepts and Cloud Services -
United States Air Force
5CRS - 5th Combat Communication Readiness School
United States Air Force
VMware vSphere: Troubleshooting [V7] -
United States Air Force
VMware vSphere 6.7: Install, Configure, Manage -
Department of the Army
CCAFAL - INFORMATION SYSTEMS MGT
United States Air Force
Cyber Systems Operations Security+ Certification -
United States Air Force
Cyber Systems Operations Apprentice - Y4I -
United States Air Force
Information Technology Fundamentals (ITF) -
United States Air Force
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