Mario Arellano
Copperas Cove,Texas
Summary
Results-driven Signal Support Systems Specialist with extensive experience in network troubleshooting and telecommunications. Delivered critical communication support under pressure while leading teams to enhance operational efficiency. Focused on leveraging strong interpersonal skills to foster collaboration and achieve organizational goals.
Overview
15
15
years of professional experience
Work History
Overnight Team Associate
Walmart
Harker Heights, Texas
08.2026 - Current
- Unloaded freight trucks to streamline inventory management and ensure timely product availability.
- Stocked shelves and organized merchandise, improving product visibility and accessibility.
- Assisted customers with inquiries, enhancing their shopping experience and product knowledge.
Signal Support Systems Specialist (25U)
United States Army
01.2012 - 12.2025
- Installed, operated, and maintained voice, data, and video communication networks, including local area networks (LAN) and tactical satellite systems.
- Managed complex IT infrastructures in fast-paced environments.
- Supervised and mentored junior specialists, enhancing team capabilities and ensuring mission readiness.
- Enforced cybersecurity protocols, protecting sensitive data and ensuring integrity of secure communication channels.
- Supervised, trained, and mentored teams of junior specialists, ensuring high performance and mission readiness.
- Resolved urgent technical problems and trained personnel on new communication devices, facilitating seamless operations and effective inventory management.
- Excelled at translating technical jargon into clear instructions for non-technical users and working well with others to meet strict deadlines.
Education
Cybertex Institute of Technology
Killeen, TX09-2026
Skills
- Customer service
- Technical troubleshooting
- Network support
- Network installation
- Hardware maintenance
- Security & Compliance
- Security & Compliance
Closing
Thank you for your time and consideration. I would love to talk with you about how my background and work ethic match the needs of 1st National Bank.
Relevant Experience
During my decade in the Army, I managed complex IT infrastructures in fast-paced environments. I routinely resolved urgent technical problems, trained personnel on new communication devices, and managed high-value inventory. I excel at translating technical jargon into clear instructions for non-technical users and working well with others to meet strict deadlines.
Application
personal banker, 1st National Bank, Application for personal banker position, Dear Hiring Manager, I am writing to apply for the personal banker position at 1st National Bank. With 10.5 years of dedicated service in the United States Army as a Signal Support Systems Specialist (25U), I offer a strong background in network troubleshooting, telecommunications, and team leadership. My military career taught me how to keep critical communication systems running smoothly under pressure. I am eager to bring these hands-on technical and leadership skills to your organization.
Timeline
Overnight Team Associate
Walmart
08.2026 - Current
Signal Support Systems Specialist (25U)
United States Army
01.2012 - 12.2025
Cybertex Institute of Technology