David Harrison
Corryton,TN
Summary
Dynamic Marine Corps veteran and Cybersecurity Professional with a robust background in threat detection, incident response, and vulnerability management. Recognized for exceptional team collaboration and adaptability in fast-paced environments, consistently driving results through a proactive approach. Extensive expertise in network monitoring, risk assessment, and security protocols ensures comprehensive protection and effective mitigation strategies. Strong analytical thinker with proven problem-solving capabilities and a commitment to achieving organizational objectives, complemented by dual B.S. degrees in Cybersecurity and Software Engineering, along with certifications including CISSP, SSCP, CySA+, and AWS Certified Cloud Practitioner.
Overview
17
17
years of professional experience
1
1
Certification
Work History
Tier 2 SOC Analyst (Shift Lead)
SAIC
, TN
07.2022 - Current
- Lead incident response operations, monitoring network traffic for IOCs and remediating threats.
- Conduct phishing triage, blocking malicious URLs/domains, and escalating advanced threats.
- Perform proactive threat hunts aligned with MITRE ATT&CK to identify stealthy adversary activity.
- Collaborate with IT teams to validate EDR/XDR sensor health and ensure compliance coverage.
- Develop and refine detection playbooks for SOC automation and efficiency.
- Deliver weekly reports on incident trends, SOC KPIs (MTTD/MTTR), and performance metrics.
- Mentor junior analysts, conduct evaluations, and manage shift operations.
Network Administrator
Freelance
06.2020 - 07.2023
- Administered small-business networks, ensuring secure configurations and uptime.
- Managed user accounts, permissions, and access controls for sensitive data.
- Implemented internal security guidelines and responded to suspicious activity.
- Supported endpoint security and troubleshooting across desktops, laptops, and routers.
Welding & Fabrication Roles
Apollo Mechanical / Xtreme Tower Products / Rocore
01.2014 - 01.2020
- Fabricated precision components and performed welding operations in compliance with engineering and OSHA safety standards.
- Operated CNC machinery and assisted with troubleshooting of industrial control systems.
- Provided technical input to engineering teams during product development.
- Reinforced transferable skills: attention to detail, adherence to compliance standards, and technical troubleshooting in high-risk environments.
Airframe Mechanic / Supervisor
United States Marine Corps
01.2009 - 01.2014
- Supervised mission-critical operations with a focus on safety, compliance, and technical precision.
- Trained and mentored personnel in troubleshooting, problem-solving, and leadership.
- Awarded Navy and Marine Corps Achievement Medal for superior leadership and technical expertise.
Education
Bachelor of Science - Software Engineering
Western Governors University
Salt Lake City, UT09.2024
Bachelor of Science - Cybersecurity and Information Assurance
Western Governors University
Salt Lake City, UT09.2023
Skills
- Application Security & Secure SDLC
- Threat Hunting & Incident Response
- SIEM & EDR/XDR Management
- Cloud Security (AWS GuardDuty, CloudTrail)
- Identity & Access Management (IAM, AD/Azure AD)
- Regulatory Frameworks (NIST 800‑53, CSF, MITRE ATT&CK)
- Detection Playbook Development
- Security Reporting & Metrics (MTTD/MTTR)
- Leadership & Mentorship
- Operating Systems: Windows, Linux (Kali, Ubuntu), macOS
- Programming/Scripting: Python, PowerShell, Bash, C, C#, HTML
- Security Tools: Splunk, Carbon Black, Palo Alto, Cofense, Fortinet, Wireshark, AWS GuardDuty, AWS CloudTrail
- Cloud Platforms: AWS (Certified Cloud Practitioner)
- Other: Active Directory, Azure AD, Endpoint Security, Ticketing Systems
Websites
Certification
- CISSP
- SSCP
- CySA+
- Security+
- AWS Certified Cloud Practitioner
- CompTIA A+
- CompTIA Network+
- CompTIA Project+
- CompTIA Pentest+ (previously held)
- CIW Web Development Associate
Timeline
Tier 2 SOC Analyst (Shift Lead)
SAIC
07.2022 - Current
Network Administrator
Freelance
06.2020 - 07.2023
Welding & Fabrication Roles
Apollo Mechanical / Xtreme Tower Products / Rocore
01.2014 - 01.2020
Airframe Mechanic / Supervisor
United States Marine Corps
01.2009 - 01.2014
Bachelor of Science - Software Engineering
Western Governors University
Bachelor of Science - Cybersecurity and Information Assurance
Western Governors University