Justin Leach

• Design, update, and maintain new and existing agency systems across Windows, Linux, and hybrid environments • Maintain agency security standards through patch management and Nessus vulnerability scanning • Train and support both domestic users and foreign partners on the back-end administration of the agency analytics system • Update system configuration files to stay current with latest data releases

• Create and maintain curriculum for agency-specific tools for use by onboarding users. • Administer a hyperconverged system while maintaining agency security standards. • Conduct training on basic computing and networking concepts, applying them to relevant tools and utilities.

• Administer RedHat 7/8, Windows Server 2016-2022, and Windows 7/10 systems across geographically dispersed environments, deployed on both virtual machines and physical servers. • Administer and optimize domain services and applications, including Exchange, Atlassian collaboration tools, and development/engineering tools, to ensure security and meet workload requirements. • Acted as the IT and Security team representative in top-level leadership discussions.

• Administer RedHat 7/8, Windows Server 2016-2022, and Windows 7/10 systems across geographically dispersed environments within a Windows Active Directory framework • Maintain agency security standards through patch management and Nessus vulnerability scanning.

Providing hands-on learning experience for bachelors’ students, with various levels of experience, with Windows Server and Red Hat operating systems and domains, and incorporating official Microsoft educational materials and industry experience. Curriculum includes a review of basic computer and networking concepts in order to transition to advanced Windows Server 2022 and Red Hat 8 administration skills.

• Developed and integrated custom software solutions into a Linux-Windows hybrid environment by working as the integrator and liaison between software, server and networking teams to orchestrate a clean and successful rollout. • Assisted in tasking responsibilities using JIRA to track workflow and progress of teams of up to ten. • Completed an enterprise-level migration of Microsoft DNS and DHCP to InfoBlox

• Supported the deployment and decommissioning of comprehensive IT environments, encompassing hardware, software, and server configurations, for Joint Military Exercise Cyber Security operations. • Managed inventory, ensured secure transport, and implemented security protocols throughout the setup and breakdown process to maintain operational integrity.

• Maintained enterprise-level domains across several networks with varying systems configurations and client requirements in a collaborative environment. • Acted as a client-facing representative for Group Policy and site interconnectivity troubleshooting. • Created customized solutions to resolve customer requirements using features such as Active Directory, Group Policy, DNS and DHCP. • Deployed virtual machines and physical hardware for end-user operations and infrastructure support.