Antwan Marshall
Fort Walton Beach,FL
Summary
Dynamic Client and System Technician with extensive experience in system administration, skilled in managing and maintaining servers, networks, and hardware to enhance performance and reliability. Proven ability to troubleshoot complex issues, ensuring seamless operation of IT infrastructure. Holds a TS/SCI clearance with a background in Special Access Programs, ready to leverage technical expertise and problem-solving skills in a System Administrator role. Committed to driving operational excellence and contributing to organizational success through innovative solutions.
Overview
11
11
years of professional experience
1
1
Certification
Work History
Client Systems Technician
ManTech
09.2025 - Current
- Facilitated user account management in Active Directory, ensuring accurate placement in security groups and permissions to uphold compliance standards.
- Executed security clearance process, achieving access to multiple Special Access Programs.
- Utilize PowerShell for troubleshooting, execute cable patching, and conducted network port testing to ensure seamless network operation
- Collaborated with information system security officers and system administrators to enhance security measures and streamline processes across IT projects.
- Diagnosed and resolved client system issues to ensure operational efficiency.
- Installed, configured, and maintained hardware and software assets for optimal performance
- Installed and maintained Windows and desktop software, service packs, patches, and anti-virus updates for 85 clients.
Network Systems Technician
492nd Special Operations Wing
08.2023 - 09.2025
- Assisted with network setup tasks such as establishing connections between devices or configuring wireless settings, improving connectivity within client environments.
- Ensured data security by performing regular system backups and maintaining up-to-date antivirus software.
- Provided remote and in-person support to resolve issues.
- Stayed current on industry trends and best practices by attending relevant conferences, workshops, and training sessions, applying new knowledge to enhance client system performance.
- Performed routine maintenance on client systems to ensure optimal functionality, reducing the need for service calls.
- Contributed to the development of departmental policies and procedures, ensuring consistent quality of service across all client engagements.
- Directed IT operations supporting 600+ users across two installations, coordinating end-user support, asset management, and incident resolution
Cyber Transport Systems
Alabama Air National Guard
04.2015 - Current
- Led implementation of COMSEC procedures and ensured compliance with NSA regulations for classified systems.
- Served as unit COMSEC Responsible Officer (CRO), managing 20+ keying materials with zero discrepancies
- Enhanced network efficiency by implementing and maintaining hardware and software components.
- Coordinated with vendors to source high-quality equipment at competitive prices while fostering strong relationships built on trust.
Education
Some College (No Degree) - 453 Hour Cyber Defense Operations Course
Community College of The Air Force- Keesler AFB
Biloxi, MSSome College (No Degree) - 80 Hour Cyber Transport Security + Course
Community College Of The Air Force- Keesler AFB
Biloxi, MSInformation Technology Fundamentals Course
Community College Of The Air Force- Keesler AFB
Biloxi, MS12.2022
Skills
- Active Directory
- Remote troubleshooting
- System monitoring
- Software installation
- Cross-environment data transfer in VMware
- Managed end-user support for Windows
- User support ticket management
Certification
- CompTIA Security+
Timeline
Client Systems Technician
ManTech
09.2025 - Current
Network Systems Technician
492nd Special Operations Wing
08.2023 - 09.2025
Cyber Transport Systems
Alabama Air National Guard
04.2015 - Current
Information Technology Fundamentals Course
Community College Of The Air Force- Keesler AFB
Some College (No Degree) - 453 Hour Cyber Defense Operations Course
Community College of The Air Force- Keesler AFB
Some College (No Degree) - 80 Hour Cyber Transport Security + Course
Community College Of The Air Force- Keesler AFB