Infrastructure & Virtualization Systems Administrator

Kraig Geise

Network Systems Administrator Infrastructure & Virtualization Specialist

507-***-**** ******@*****.*** Lewiston, MN 55952 LinkedIn Valid Driver's License PROFESSIONAL SUMMARY

Versatile IT professional with 20+ years of hands-on experience designing, implementing, and administering enterprise server and network infrastructure across multi-site environments. Proven expertise in Windows Server and Linux/Ubuntu administration, VMware virtualization, Active Directory, and storage management. Demonstrated track record of achieving high availability — including a 95% reduction in server downtime — through proactive monitoring, root cause analysis, patch management, and disaster recovery planning. Skilled collaborator, clear technical communicator, and self-driven problem solver comfortable supporting 24/7 operations and responding to critical outages.

CORE COMPETENCIES

Server & OS Administration: Windows Server, Linux/Ubuntu, Solaris, macOS, VMware, Hyper-V, Active Directory, Group Policy

Virtualization & Storage: VMware, Azure AD, server configuration, storage performance monitoring, capacity planning

Networking: TCP/IP, DNS, DHCP, VPN, LAN/WAN, VLANs, Firewalls, Load Balancing, WLAN, EIGRP, OSPF, BGP

Monitoring & Backup: System resource monitoring, uptime optimization, backup integrity, disaster recovery procedures

Scripting & Automation: Bash (familiar), HTML5, JavaScript, automated dashboard development Data & Reporting: SQL, SSIS, Power BI, Tableau, Crystal Reports Documentation & Change Mgmt: Configuration baselines, system documentation, CRM/ITSM standards, change management

Collaboration & Support: Cross-functional teamwork, vendor management, Tier 2/3 escalation, end-user training

PROFESSIONAL EXPERIENCE

Systems AdministratorApr 2025 – Aug 2025

Computer Danamics · Cologne, MN

• Diagnosed and resolved complex hardware, software, and network connectivity incidents remotely — serving as primary escalation point for infrastructure problems across a diverse client base.

• Managed Office 365 licensing, user configurations, and Windows environments; designed automated dashboards to monitor system utilization, improving productivity by 15%.

• Executed patch management, software upgrades, and remote installations to maintain security integrity and minimize system exposure.

• Advised clients on network hardware selection and PC configuration based on technical risk and needs analysis.

• Maintained documentation of all technical interactions per CRM standards, supporting configuration baselines and repeatable processes.

Technical Specialist – StrategyMar 2012 – Oct 2024 Mayo Foundation for Medical Education and Research · Rochester, MN

• Supported strategic IT and infrastructure initiatives across a large, multi-site healthcare organization; collaborated cross-functionally to troubleshoot network and server issues and maintain continuous system reliability.

• Performed root cause analysis on infrastructure and data incidents; recommended and implemented corrective and preventive measures to reduce recurrence and improve uptime.

• Monitored system performance and resource utilization within a governance framework, enabling proactive maintenance and early detection of issues before impact.

• Built interactive dashboards using SQL, SSIS, Power BI, and Tableau to surface operational metrics and support executive-level infrastructure decisions.

• Implemented process improvement and technology education programs, increasing team productivity by 20% and reducing support escalations.

• Contributed to IT standards documentation, system configuration baselines, and procedure development supporting audit readiness and change management.

Sr. Internet Analyst / Help Desk SupervisorMar 2001 – Mar 2012 Hiawatha Broadband Communications, Inc. · Winona, MN

• Administered enterprise LAN/WAN, DNS, DHCP, VPN, and server infrastructure for a multi-site broadband provider; served as escalation point for Tier 2/3 network and server issues.

• Implemented Ubuntu OS optimizations on production servers, achieving a 95% reduction in server downtime through disciplined performance tuning and root cause analysis.

• Managed and maintained mail, RADIUS/authentication, and web servers; oversaw security updates, server configurations, backup integrity, and periodic network equipment audits.

• Administered Active Directory and identity/access management; enforced security configurations and ensured consistent authentication standards across the enterprise.

• Designed SQL databases to track customer issues and network equipment inventory, improving resolution time, asset management, and audit reporting accuracy.

• Supervised help desk operations and end-user support across hardware, software, servers, and networking; trained users on Windows and macOS, reducing support requests by 30%. Server Management / MaintenanceJan 2003 – Dec 2003 Hiawatha Broadband Communications, Inc. · Winona, MN

• Maintained mail, RADIUS/authentication, and web servers; ensured performance, uptime, and security of datacenter infrastructure.

• Monitored network health through systematic review of server logs, authentication records, and traffic patterns; identified and escalated anomalies per security protocols.

• Procured and audited customer network equipment as part of the Identity Theft response team, strengthening security controls and protecting data assets. TECHNICAL SKILLS

Virtualization: VMware, Hyper-V, Azure AD

Server OS: Windows Server, Linux/Ubuntu, Solaris, macOS Networking: TCP/IP, DNS, DHCP, VPN, LAN/WAN, VLANs, Firewalls, Load Balancing, EIGRP, OSPF, BGP, HSRP, STP, QoS

Identity & Access: Active Directory, Group Policy, RADIUS, Azure AD Monitoring & Data: SQL, SSIS, Power BI, Tableau, Crystal Reports, system monitoring dashboards Cloud & Collaboration: Office 365, SharePoint, Exchange, Microsoft Teams Scripting & Dev: Bash (familiar), HTML5, JavaScript, CRM platforms Hardware: Server hardware, PC configuration, network equipment procurement, Cisco ISR/ASR/Catalyst/Nexus

(familiar)

EDUCATION

Bachelor of Science, Physical Science — Winona State University, Winona, MN Dec 1999 Associate of Arts, General Studies — Winona State University, Winona, MN Jun 1986 CERTIFICATIONS & PROFESSIONAL DEVELOPMENT

CCNA / CCNP: Actively pursuing Cisco network certification Microsoft 365: Microsoft 365 Administration Certification CompTIA A+: Certification in progress

IT Certifications: Multiple certifications obtained through Computer Danamics (2025)

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