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David Cook

@davidcook

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Senior cybersecurity leader specializing in DoD/federal RMF, ATOs, endpoint and cloud security.

United States

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What I'm looking for

I seek a senior cybersecurity leadership role in a mission-focused federal/DoD environment to drive RMF/A&A, lead endpoint and cloud security programs, mentor teams, and deliver accreditation-ready, compliance-driven outcomes.

I am a senior cybersecurity and IT operations leader with more than 10 years securing mission-critical DoD and federal systems. I focus on aligning technical controls with NIST, DISA and HIPAA requirements to protect high-value assets.

I designed and implemented Trellix endpoint security across 2,000+ endpoints, configured split-server ePO architectures, and led RMF/A&A efforts that supported successful ATO renewals. I drove vulnerability management improvements by transitioning legacy ACAS to Tenable.sc and integrating continuous monitoring with Qmulos and Splunk.

I have led 24/7 global operations, directed teams of network and systems engineers, and maintained near-perfect availability and SLA compliance while resolving priority incidents and chairing change review boards. My process improvements reduced critical vulnerabilities and cut reporting time through automated dashboards and standardized SOPs.

I bring pragmatic leadership, measurable security outcomes, and a mission-first mentality to every engagement. I enjoy mentoring teams, improving operational resilience, and delivering accreditation-ready systems that meet strict federal and DoD standards.