Willie McCallister
Windows System Administrator
Charlotte,NC
Summary
Experienced Systems Administrator with a demonstrated history of providing technical support, installing and configuring computer systems and software applications, maintaining and upgrading computer systems, and developing and implementing IT policies and procedures. Skilled in managing computer networks, conducting research on new technology solutions, providing training to end-users, and collaborating with other departments to ensure technology is used effectively. Also experienced in designing and implementing customized identity and access management solutions, monitoring and investigating security incidents and threats, and providing training and support to clients and end-users on security best practices. Possesses strong skills in VMware virtual infrastructure, Windows Server and Linux Red Hat administration, and Citrix Farms development and maintenance.
Overview
22
22
years of professional experience
Work History
Sr. IT Support Specialist
Southminster Retirement Community
Charlotte, NC
07.2019 - Current
- Provided technical support to end-users, troubleshooting problems and providing solutions to ensure efficient operation
- Installed and configured computer systems and software applications, ensuring that they meet the required standards and specifications
- Maintained and upgraded computer systems, ensuring that they are up-to-date with the latest software and security updates
- Monitored and managed computer networks, ensuring that they are functioning properly and that any issues are resolved quickly
- Developed and implemented IT policies and procedures to ensure that technology is used efficiently and effectively across the organization
- Provided training to end-users on how to use various computer systems and software applications, ensuring that they are able to perform their tasks efficiently
- Maintained documentation on all computer systems and software applications, including troubleshooting guides and user manuals, to ensure that information is readily available when needed
- Conducted research on new technology solutions that may be beneficial to the organization, and made recommendations on their implementation
- Collaborated with other departments to ensure that technology is used effectively to support their business goals and objectives
- Provided technical expertise and guidance to other members of the IT team, ensuring that they are able to perform their tasks efficiently and effectively
Azure Support Engineer
Microsoft, Inc
Charlotte, NC
04.2018 - 07.2019
- Worked with clients to understand their Azure identity and security requirements and designed customized identity and access management solutions that met their needs
- Implemented and maintained client-specific security policies, procedures, and controls to protect their data and systems from threats and vulnerabilities
- Monitored and investigated security incidents and threats in client environments and responded appropriately to mitigate risks
- Collaborated with cross-functional teams, including the client's IT team, to ensure compliance with regulatory requirements and industry standards
- Provided training and support to clients and end-users on identity and access management and security best practices
- Worked with Microsoft product teams to provide feedback on Azure identity and security features and to identify and resolve issues faced by clients
IT Infrastructure Administrator IV
Childress Klein Property Management
Charlotte, NC
09.2017 - 11.2017
- On contract with MetroSystems)
- Responsible for upgrading and maintaining IT infrastructure that included VMware, Hyper-V, and Linux servers
- Responsible for monitoring and troubleshooting issues related to Server Hardware as well as MS Exchange, Active Directory, Trend Micro Security, and SAN Storage
- Managed an environment that includes stand-alone Cisco servers, HP Blade enclosures, and Cisco Blade enclosures with UCS management
- Assisted with network refresh, replacing switches with new Cisco equipment
- Assisted Desktop Support with any issues that arise
- Provided technical assistance to IT team members as needed
Windows System Engineer
Wells Fargo
Charlotte, NC
07.2016 - 05.2017
- Responsible for building, deploying, and maintaining Microsoft Cloud Platform System (CPS) for private cloud environment within Wells Fargo
- Worked on escalated issues and complex cloud-based identity management and user authentication, service interruptions with Virtual Machines (their host nodes) and associated virtual storage
- This included Hyper-V and VMware guest servers with Windows and Linux Operating Systems
- Worked directly with Microsoft technicians on trouble tickets to develop solutions to problems that occurred on the Microsoft CPS platform
- Work with application teams to develop capacity requirements for new projects as well as utilizationthresholds for existing environments.
Windows Systems Engineer
Duke Energy
Charlotte, NC
03.2004 - 12.2015
- Installed, configured and administered VMware Virtual Infrastructure using vSphere 4.x, 5.x, and 6.x servers
- Managed all aspects of vSphere environments, including vSwitches, Distributed File, Distributed virtual switches, HA, Distributed Resource Scheduler, vMotion, Storage, vMotion, Access and Authentication control, and Advanced Troubleshooting
- Built server images (Windows Server and Linux Red Hat) and deployed them in a timely fashion
- Collaborated with other IT teams to implement server build processes and reduced delivery time of new servers from over a week to less than one day for standard OS builds
- Developed and maintained Citrix Farms for applications (XenApp) and Virtual Desktops (XenDesktop) to allow for a Bring Your Own Device service for Duke Employees
- Worked with Citrix Netscaler for load balancing and Citrix Receiver (ICA Client) to manage the environment
- Set up HP Blade System infrastructure that included over 500 blade servers that housed SQL servers, MS exchange servers, Linux based servers, as well as VMware Hosts and Citrix Xen Servers for VDI
- Worked with the storage team to set up EMC based (VNX and Clariion) fibre channel storage to each blade enclosure and to get the storage zoned to the enclosures
- Also worked with the network team to get the VLAN's set up for each enclosure, reducing data center rackspace usage by 50%
- Developed and maintained Powershell scripts to help with the day to day operations of the servers
- Developed reports for status of servers
- Also worked to develop Powershell Desired State Configuration scripts to maintain server configuration and quickly repair server issues
- Worked on projects to migrate servers from physical hardware to virtual server (P2V), significantly reducing the number of physical servers in the data center.
Desktop Deploy Technician
Duke Energy
Charlotte, NC
08.2001 - 12.2003
- Deployed IBM and Dell desktop and laptops to end-users
- Backed up data from old computers and restored to new systems
- Converted systems to Windows XP.
Education
Diploma - Computer Technology
ECPI School of Technology
Bachelor of Business Administration - Marketing
Marshall University
Huntington, WVSkills
- System upgrades
- Product development
- Performance Analysis
- Technical Analysis
- Hardware knowledge
- Good Telephone Etiquette
- Maintenance and Repair
- Decision-Making
- Attention to Detail
- Teamwork and Collaboration
- Infrastructure planning
- Excellent Communication
- Network Technology
- Desktop Support
- Troubleshooting and Assistance
- Apple IOS
- Windows 10
- Customer Service Expertise
- Hardware and Software Configuration
Work Availability
monday
tuesday
wednesday
thursday
friday
saturday
sunday
morning
afternoon
evening
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Quote
"Success is not final, failure is not fatal: it is the courage to continue that counts."
Winston Churchill
Timeline
Sr. IT Support Specialist
Southminster Retirement Community
07.2019 - Current
Azure Support Engineer
Microsoft, Inc
04.2018 - 07.2019
IT Infrastructure Administrator IV
Childress Klein Property Management
09.2017 - 11.2017
Windows System Engineer
Wells Fargo
07.2016 - 05.2017
Windows Systems Engineer
Duke Energy
03.2004 - 12.2015
Desktop Deploy Technician
Duke Energy
08.2001 - 12.2003
Diploma - Computer Technology
ECPI School of Technology
Bachelor of Business Administration - Marketing
Marshall University
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