Callie Renfro
@callierenfro
Versatile IT professional with 15+ years in troubleshooting, networking, and systems support.
United StatesWhat I'm looking for
I am a detail-oriented IT professional with over 15 years of technical experience across military, corporate, and customer-facing environments. My background includes network administration, systems engineering, and hands-on troubleshooting for Windows, macOS, mobile devices, and Cisco/VMware platforms.
Throughout my career I have delivered Tier 1 and Tier 2 support, managed Active Directory and Microsoft 365 environments, and performed signal testing and diagnostics for mobile network technologies. I bring strong communication skills and a proven ability to provide timely solutions and positive customer experiences.
I maintain a home lab and independent projects including OpenVPN, Microsoft Server 2016 & Exchange, local intranet hosting, and Home Assistant automation, demonstrating continuous learning and practical application of enterprise and networking technologies.
Experience
Work history, roles, and key accomplishments
IT Helpdesk Technician
The AME Group
Jan 2022 - Jan 2025 (3 years)
Provided Tier 1 and Tier 2 support for hardware, software, and networking issues, managed Active Directory users and Microsoft 365 updates, and assisted with patch management and backups to maintain high customer satisfaction.
Systems Engineer
Intertek
Jan 2020 - Jan 2022 (2 years)
Performed signal testing, QA, and diagnostics on mobile and network devices (CDMA, EVDO, LTE) and communicated results with international clients to resolve issues.
Information Technology Specialist
U.S. Army Reserve
Jan 2017 - Jan 2022 (5 years)
Maintained and troubleshot military computer systems and network operations, supported Cisco hardware and VMware environments, and performed patching and server maintenance to ensure mission readiness.
BBGeek Squad Consultation Agent
Best Buy
Jan 2016 - Jan 2020 (4 years)
Served as primary customer contact for technical consultations and repairs, diagnosed devices, and trained sales teams on Apple and Geek Squad service offerings to improve service delivery.
Supply Clerk
U.S. Army Reserve
Jan 2011 - Jan 2012 (1 year)
Managed requisitions, inventory, and tool control for aircraft maintenance, and developed a custom database to track faults and maintenance issues.
Aircraft Electrician
U.S. Army Reserve
Jan 2008 - Jan 2012 (4 years)
Diagnosed, repaired, and maintained electrical and electronic aircraft systems, applying electrical, hydraulic, and pneumatic principles to ensure airworthiness and logging over 100 maintenance hours.
Parts Specialist
O'Reilly Auto Parts
Jan 2013 - Present (13 years)
Managed parts inventory and provided customer support for parts selection to support repair operations.
Education
Degrees, certifications, and relevant coursework
United States Army Aviation and Logistics School
Military professional training, Aviation and Logistics
2008 - 2010
Completed professional training in aviation and logistics at the United States Army Aviation and Logistics School from 2008 to 2010.
Bothell High School
GED, General Education
Completed GED credential associated with Bothell High School in 2008.
Availability
Location
United StatesAuthorized to work in
Job categories
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