David Harrison

Safeguard and advance classified defense systems through expert application of DoD cybersecurity frameworks and compliance standards. Lead RMF implementation, system authorization, and continuous monitoring using advanced toolsets including eMASS, STIGs, SCAP, Splunk, and JIRA. Drive enterprise-level risk management, vulnerability remediation, and POA&M governance in alignment with NIST and DoD directives. Ensure sustained audit readiness and cyber resilience in support of national defense and mission-critical operations.

Senior Security Control Assessor (SCA) supporting accreditation and authorization of critical DoD information systems. Lead comprehensive security assessments to evaluate control implementation, residual risk, and compliance with RMF and NIST SP 800-53/JSIG requirements. Leverage eMASS to manage rolling accreditations, facilitate Authority to Operate (ATO) and Authority to Connect (ATC) decisions, and ensure continuous security posture validation. Provide expert guidance to system owners and stakeholders to strengthen cyber resilience and sustain mission assurance across classified environments.

Managed government/contractor/military team who ensures security, policy adherence and inventory management of classified cryptographic, telecommunication and network equipment for end point communication solutions. Implements operability and security in dynamic sip,voip and networking strategy’s utilizing state of the art equipment enabling fluid throughput to IC customers. Dar/tsco - verifies lines of funding, contracts, and sets guidelines for contractor maintenance. Zero trust implementation. Leveraged advanced A.I implementation.

Responsible for security adherence, scans and compliance of SAP networks, accreditation, scalability and operability.

Team lead, managed daily operations of 51 employees, enabling effective and efficient use of information technology, using scrum, cluster, Linux, Cisco, windows assets, vtc and highly demanding security adherence.

Cryptology and network administrator of special network assets, in a deployed environment. Provided, on-site hosting, bridge support and technical interoperability of classified equipment. Reviewed and implement rmf framework, devise upgrade and cyber security solutions in real time theater environment.

Operate special network watch floor, maintained router, switch and server solutions, in a highly complex environment. Provided direct site monitoring, troubleshooting and connection resolution. Routine and reactionary cyber defense, threat analysis and incident response SOC environment

Conducted comprehensive computer troubleshooting,repair and administration of high value computer equipment. Network defense in support of cyber defense and interoperability.