Open to opportunities

JOHNNIE WILLIAMS

@johnniewilliams

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Seasoned cybersecurity leader specializing in defensive cyber operations.

United States

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What I'm looking for

I seek a senior cybersecurity role leading defensive operations or security programs where I can drive cloud/Zero Trust initiatives, mentor teams, and deliver measurable improvements in detection, response, and compliance.

I am a cybersecurity and IT executive with over 20 years of leadership across military, federal, and private-sector environments, delivering secure IT operations and classified network oversight. I blend hands-on technical expertise with strategic program leadership to ensure mission-aligned security outcomes.

As a 25D Cyber Network Defender and senior incident responder, I have led defensive cyber operations, threat detection, forensic analysis, and incident response supporting DoD, DHS, USCYBERCOM, and state networks. I routinely perform SIEM monitoring, penetration testing, malware forensics, and adversary profiling.

I have overseen RMF/ATO compliance, Zero Trust implementations, cloud security integrations (AWS/Azure), and DevSecOps initiatives while managing cross-functional teams and modernization programs. My work has produced measurable improvements in incident response times, SLA/KPI performance, and operational transparency.

I am committed to continuous professional development (M.S. in Cybersecurity Technology, DBA in Information Systems in progress, PMP/Executive certs planned) and to mentoring high-performing teams to deliver actionable intelligence and resilient cybersecurity capabilities.

Experience

Work history, roles, and key accomplishments

Current

Sr. Incident Responder

Current

GA ARNG

Dec 2005 - Present (19 years 10 months)

Lead Defensive Cyber Operations for GuardNet and DoDIN-A, directing incident response, vulnerability assessments, and RMF compliance to reduce incident response times by 35% and improve SLA performance.

Incident Response Threat Hunting DoD RMF Nessus Security Onion

Network Operations Shift Lead

Cole Engineering Services Inc

Jul 2024 - Jul 2025 (1 year)

Directed IT and network operations for classified/unclassified environments, managing 12 direct reports and improving SLA metrics while implementing monitoring dashboards and VMwar e Aria operations.

Network Operations Team Leadership Metabase Grafana Jira Confluence SLA Management Capacity Planning

Sr. Network Operations Analyst

Leidos

May 2023 - May 2024 (1 year)

Led ITIL-based classified network operations, defined KPIs/CSFs, delivered executive reporting, and mentored cyber analysts to ensure DoD/IC compliance and resilient network architectures.

ITIL Network Architecture Performance Management Incident Management KPIs Security Compliance

Sr. Infrastructure Support

Charlie Company, 442nd Signal Battalion

Jan 2024 - Apr 2024 (3 months)

Monitored physical and cloud networks, performed PCAP analysis and vulnerability scans, and deployed cybersecurity tools to automate threat detection and deliver remediation recommendations.

PCAP Nessus Nmap Metasploit Security Onion Log Analysis Cloud Security

Joint Intelligence Operations NCOIC

3221st Military Intelligence Battalion

Oct 2021 - Nov 2022 (1 year 1 month)

Directed intelligence operations for 500+ personnel, producing all-source analysis and executive briefs that reduced report latency by 30% and enhanced operational readiness.

All Source Intelligence Geospatial analysis Reporting Knowledge Management OSINT HUMINT Leadership

System Administrator II

A-3 Missions

Jan 2020 - Oct 2021 (1 year 9 months)

Evaluated network infrastructures, automated IT processes, and managed LAN/WAN design and virtualization to improve disaster recovery readiness and RMF compliance.

LAN WAN VMware VSphere Automation Virtualization Disaster Recovery

IT Technician

Insight Global

Oct 2019 - Jan 2020 (3 months)

Provided user account administration, OS upgrades, hardware repair, and assisted malware detection/remediation while implementing ITSM processes to maintain operational continuity.

User Support ITSM Malware Remediation Account Management Endpoint management Troubleshooting

Sr. Help Desk Technician

General Dynamics IT

Mar 2018 - Oct 2019 (1 year 7 months)

Resolved Tier II/III incidents, deployed LAN/WAN networks, maintained ITIL/IA compliance, and supported vulnerability scanning and system hardening in classified environments.

LAN WAN ITIL Patching System Hardening Endpoint management SOP Development

IT Supervisor

Unisys

Nov 2014 - Dec 2016 (2 years 1 month)

Supervised service desk teams, enforced SLAs, managed Active Directory, and implemented knowledge management strategies to improve ticket resolution efficiency.

Service Desk Management Active Directory SLA Management Knowledge Management Layer1 2 Troubleshooting Staff Training Ticketing Systems

Network & Communications Sergeant

201st Regional Support Group

May 2010 - May 2012 (2 years)

Planned and maintained LAN/WAN/WLAN infrastructures, managed JWICS/CENTRIX/SIPR/NIPR accounts, and enforced DoD security controls and compliance measures.

LANs & WANs Cryptographic Equipment Training

Education

Degrees, certifications, and relevant coursework

University of Maryland Global Campus

Master of Science, Cybersecurity Technology

M.S. in Cybersecurity Technology in progress with cognates in digital forensics, cloud computing, and cyber operations; projected additional cognate completion in 06/2027.

Liberty University

Doctor of Business Administration, Business Administration / Information Systems

Activities and societies: Executive Doctoral Certificate in Business Administration (projected 12/2026)

Doctor of Business Administration in progress with strategic management and information systems cognates; projected completion of cognates in 12/2028.