Systems Administrator

Delta Dental of Kentucky; Louisville (KY); On-site; USD 80,000 - 110,000; Full time

Job summary

Delta Dental of Kentucky is seeking an experienced IT Infrastructure Administrator to design, deploy, and maintain enterprise Windows and Linux servers, virtualization, and SAN storage. You will ensure availability, performance, security, and resiliency of systems, manage patching, backups, and disaster recovery, and support domain services while contributing to modernization efforts.

Responsibilities include administering vSphere environments, servers, AD, and storage, plus implementing

Qualifications

• Bachelor’s degree in computer science, information systems, or related field and 3–5 years of enterprise infrastructure experience.
• Demonstrated experience with virtualization, Windows/Linux servers, and SAN storage.
• Ability to implement security hardening and patch management practices.
• Experience with AD, DNS, DHCP, and domain services.
• Familiarity with backup, recovery, and BCDR concepts.
• Strong analytical, troubleshooting, and communication skills.

Responsibilities

• Administer and support enterprise virtualization platforms (VMware vSphere/ESXi, vCenter).
• Manage physical server hardware, including installation, firmware upgrades, lifecycle management, and performance tuning.
• Provision, configure, and maintain Windows and Linux server environments in virtual and physical deployments.
• Perform capacity planning and resource optimization across compute, memory, and storage.
• Administer SAN/storage systems, including LUN provisioning, zoning, and performance monitoring.
• Manage storage allocations for high availability and optimal performance.
• Support fiber channel and/or iSCSI configurations.
• Administer Active Directory, including Group Policy, DNS, DHCP, and domain services.
• Manage identity, access, and system security configurations.
• Perform server builds, system hardening, and configuration per security best practices.
• Develop and execute patch management processes for Windows and Linux systems.
• Harden systems per security standards; assist vulnerability remediation with security teams.
• Manage enterprise backup solutions and ensure successful backup jobs.
• Design, test, and maintain disaster recovery and failover procedures.
• Participate in Business Continuity and Disaster Recovery planning and execution.
• Monitor system health and performance; analyze trends and drive improvements.
• Troubleshoot complex infrastructure issues and participate in root cause analysis.
• Provide basic database administration support (e.g., SQL Server) and coordinate with application teams.

Skills

VMware vSphere/ESXi/vCenter

Windows Server administration

Linux server administration

Storage SAN / iSCSI / FC

Active Directory / GPO / DNS/DHCP

Patch management & hardening

BCDR / Backup & recovery

Monitoring & troubleshooting

Communication skills

On-call readiness

Education

Bachelor’s degree in Computer Science / Information Systems or related field

Tools

VMware certifications

Microsoft certifications

Veeam / Commvault / backup tools

Monitoring/logging tools

SQL Server monitoring tools

Job description

Job Summary

Responsible for the design, administration, maintenance, and optimization of enterprise servers, virtualization, and storage infrastructure. This role ensures the availability, performance, security, and resiliency of Windows and Linux systems hosted on VMware platforms, including underlying hardware and SAN storage. The position supports automation, patching, backup/recovery, and domain services while contributing to operational efficiency and infrastructure modernization.

Primary Job Responsibilities

• Infrastructure & Virtualization
  • Administer and support enterprise virtualization platforms (VMware vSphere/ESXi, vCenter).
  • Manage physical server hardware, including installation, firmware upgrades, lifecycle management, and performance tuning.
  • Provision, configure, and maintain Windows and Linux server environments in both virtual and physical deployments.
  • Perform capacity planning and resource optimization across compute, memory, and storage layers.

• Storage & SAN Management
  • Administer SAN/storage systems, including LUN provisioning, zoning, and performance monitoring.
  • Manage storage allocations and ensure high availability and optimal performance for hosted workloads.
  • Support fiber channel and/or iSCSI configurations.

• System Administration & Domain Services
  • Administer Active Directory, including Group Policy, DNS, DHCP, and domain services.
  • Manage identity, access, and system-level security configurations.
  • Perform server builds, system hardening, and configuration according to security best practices.

• Patch Management & Security
  • Develop and execute patch management processes for Windows and Linux systems.
  • Harden systems based on industry and organizational security standards.
  • Support vulnerability remediation efforts in coordination with security teams.

• Backup, Recovery & BCDR
  • Manage enterprise backup solutions and ensure successful completion of backup jobs.
  • Design, test, and maintain disaster recovery and failover procedures.
  • Participate in Business Continuity and Disaster Recovery (BCDR) planning and execution.

• Monitoring, Performance & Incident Response
  • Monitor system health, performance, and availability across infrastructure layers.
  • Analyze trends and recommend improvements to system reliability and efficiency.
  • Troubleshoot and resolve complex infrastructure issues and participate in root cause analysis.

• Database & Application Support (Minor)
  • Provide basic administration support for database platforms (e.g., SQL Server), including monitoring, backups, and maintenance tasks.
  • Collaborate with application teams to ensure infrastructure alignment with application requirements.

Minimum Qualifications

Position requires a bachelor’s degree in computer science, information systems, or a related field and a minimum of 3-5 years of experience administering enterprise infrastructure environments. Will accept an equivalent combination of education and experience.

Required Technical Skills

• Virtualization: VMware vSphere, ESXi, vCenter administration
• Operating Systems: Windows Server (2016/2019/2022 or later), Linux (RHEL, Ubuntu, or equivalent)
• Storage: SAN platforms (Fiber Channel and/or iSCSI)
• Active Directory, Group Policy, DNS/DHCP
• Patch management and system hardening practices
• Backup and recovery solutions and concepts (BCDR)

Preferred Qualifications

• VMware certifications (VCP or higher)
• Microsoft certifications (e.g., Windows Server, Azure-related)
• Experience with enterprise backup platforms (e.g., Veeam, Commvault, etc.)
• Familiarity with monitoring tools and logging platforms
• Basic database administration experience (SQL Server or equivalent)

Additional Requirements

• Strong analytical and troubleshooting skills with the ability to resolve complex technical issues independently.
• Strong communication skills with both technical and non-technical stakeholders.
• Ability to participate in an on-call rotation (24/7 support as needed).

Delta Dental of Kentucky is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, sexual orientation, gender identity, national origin, disability, or veteran status.