It Support Server Administrator

Joshua L Dunahoo, Windows Server Administrator

Colo, 50056, United States, 515-***-****, ********@*****.*** SUMMARY Dedicated Windows Server Administrator with over 15 years of experience in system and network administration. Proficient in managing Windows servers, Microsoft 365, and troubleshooting complex IT issues. Successfully migrated on-premises environments to cloud-based solutions, enhancing operational efficiency. Administered VMWare ESXi environments and implemented robust backup solutions using Veeam. Committed to delivering high-quality IT support and infrastructure management to meet evolving business goals. WORK EXPERIENCE

04/2024 – Present Systems Administrator, Verbio North America Nevada, USA Diagnosed and resolved issues with systems, networks, and applications to enhance operational efficiency

Supported specialized software for plant operations, optimizing technical performance

Migrated on-premises file shares to SharePoint and Teams, improving accessibility and collaboration

Traveled to remote sites to deliver advanced onsite support, ensuring seamless operations

08/2023 – 04/2024 IT Manager, J&T Motor Freight Hubbard, USA Diagnosed and resolved issues with systems, networks, and applications to promote operational continuity

Deployed new software solutions for shop inventory and service management, enhancing process efficiency

Provided onsite support for IT-related issues, facilitating prompt resolution of technical challenges

Managed Exchange Online and Microsoft 365 applications, ensuring optimal performance

Oversaw Windows servers and Active Directory domain, maintaining system integrity and security

01/2022 – 08/2023 Network Administrator, Innovative Ag Services Hubbard, USA Diagnosed and resolved issues with systems, networks, and applications to enhance operational functionality

Engineered basic network designs and implementations of VLANs, SD- WAN with Meraki firewalls, and isolated guest wireless traffic Delivered onsite support for remote locations, executing network upgrades, client machine swaps, and end-user assistance that necessitated physical presence

Managed inbound helpdesk inquiries via calls and emails, providing technical support and guidance to users facing hardware and software issues

Administered the Microsoft 365 suite on a global scale, including Exchange, SharePoint, and Microsoft Teams, ensuring reliability and user satisfaction

Monitored and administered daily backups with Veeam Backup and Replication to safeguard data integrity

Provided after-hours support in an on-call rotation, demonstrating commitment to operational excellence

Conducted remote work after hours for system and application upgrades and patching, maintaining system reliability

02/2008 – 01/2022 Senior System Analyst – Technology Infrastructure, The Waldinger Corporation

Des Moines, USA

Spearheaded the deployment of Microsoft 365 and migrated email from an on-premises Exchange environment to Exchange Online, along with migrating users' personal drives from an on-premises file server to OneDrive

Administered and maintained VMware ESXi environments running over 200 Windows servers, ensuring optimal performance and uptime Configured and managed Windows Servers from 2008 to 2019, streamlining server operations

Oversaw DNS, DHCP, DFS, file, and print services on Windows Servers to ensure network stability

Collaborated with vendors to troubleshoot issues and resolve support cases efficiently

Managed and maintained a Citrix Virtual App and Desktop environment, providing users with reliable remote access

Upgraded golden images for provisioned servers and deployed new applications to enhance user experience

Facilitated the migration of branch phones from on-premises phone systems to a hosted solution and transitioned phones from one hosted solution to Zoom phones

Monitored and administered daily backups utilizing Veeam Backup and Replication to protect critical data

Designed, implemented, and managed Zoom video conferencing for enterprise use, enhancing corporate communications Led the migration of on-prem data centers to a colocation data center, optimizing space and resources

Configured Cisco network switches in data center and branch locations for improved connectivity

Conducted scheduled visits to branch locations to install upgraded network and server hardware and offer onsite user support

Executed remote work after hours for system and application upgrades and patching, ensuring minimal downtime

10/2001 – 02/2008 IT Administrator, Mediacom West Des Moines, USA Delivered onsite support to end users for hardware and software-related issues, fostering user satisfaction

Replaced and upgraded client computers while migrating files to new machines, minimizing disruption

Provided Tier 1 and Tier 2 support for client issues, ensuring swift resolution

Administered and maintained the on-premises phone system, enhancing communication capabilities

Implemented and managed a call center phone system to improve customer service response times

Monitored and responded to helpdesk calls and emails, delivering efficient support for technical issues

Facilitated second-level support for cable internet customers, ensuring service reliability

Supported field installers, providing them with technical assistance as required

Monitored the cable network for outages and promptly reported them to the appropriate teams

03/2006 – 12/2018 Shift Manager, Alley’s Pizza Nevada, USA EDUCATION

2000 – 2002 Vatterott College

Associates Degree, Computer Systems and Network

Technology

Des Moines, USA

Cumulative GPA of 3.78

Courses included computer hardware, software, and network configuration, troubleshooting, with a focus on system and network administration.

SKILLS Windows XP Windows 7

Windows 8 Windows 10

Windows 11 Windows Server 2008

Windows Server 2012 Windows Server 2016

Windows Server 2019 Office 2010

Office 2013 Office 2016

Office 365 Citrix Virtual Desktops

Citrix Applications Cisco

Meraki Firewalls Microsoft Active Directory

Hardware Troubleshooting Software Troubleshooting

DNS Server Configuration DHCP Server Management

Print Server Administration Windows Server Update Services Microsoft Systems Center

Configuration Manager

Veeam Backup and Replication

AS400 Administration Automation

Security Compliance Networking

Problem-Solving Time Management

Failover Clustering VLAN Segmentation

Dell PowerEdge Collaboration

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