Jesse
Kiener
// Systems Administrator with 8+ years of experience managing and maintaining Windows and Linux environments, ensuring system availability, performance, and security. Skilled in Active Directory administration, VMware virtualization, patch management, user provisioning, and network infrastructure support. Experienced in monitoring systems, troubleshooting incidents, and implementing security and compliance best practices. Progressed to Senior Systems Administrator in 2025, consistently delivering reliable, scalable IT operations in mission-critical environments.
Experience
Lead the design, implementation, and maintenance of secure, highly available Windows/Linux infrastructure, including virtualization, storage, and cloud environments supporting mission-critical systems. Ensure compliance with DoD cybersecurity frameworks (RMF, NIST 800-53, STIGs) through system hardening, vulnerability remediation, and continuous monitoring.
Provided systems administration in Windows and Red Hat Enterprise Linux environments, managing Active Directory, VMware, MySQL, and core network services. Troubleshot hardware and OS issues while administering DNS, DHCP, replication, storage, backups, and disaster recovery.
Operated as a Radio Frequency (RF) technician using Linux and Windows systems to support and troubleshoot RF simulation environments. Managed network administration and system monitoring to ensure secure, stable performance in DoD test environments.
Administered Windows Server and Linux systems supporting flight simulators, ensuring performance and reliability. Maintained and optimized SAN storage for high availability and data integrity, and performed DoD compliant upgrades and troubleshooting. Provided hands-on support for complex simulation equipment and onboard systems.
Maintained and operated a satellite uplink facility, troubleshooting and integrating video, audio, RF, and transmission systems to ensure reliable nationwide service. Utilized remote desktop and virtual machines to perform maintenance across distributed transmission sites, and collaborated with network engineers on scheduled maintenance and system integration.
Oversaw maintenance, troubleshooting, and repair of C5ISR systems on operational and seagoing platforms, ensuring secure and reliable performance in high-risk environments. Led major command and control suite upgrades, configuring LAN systems, modifying hardware interfaces, and coordinating with contractors to deliver integrated solutions. Performed system administration on Windows and Linux servers, managed maintenance schedules for communication and navigation systems, and resolved complex system issues through diagnostics and stakeholder collaboration.
Skills
- Windows / Linux OS
- LDAP
- Virtualization
- Networking & Infrastructure Services
- Cybersecurity & Compliance
- Automation & Scripting