Senior Systems Administrator – Enterprise Windows/Linux Lead

Delaware Nation Industries; Bath Township (OH); On-site; USD 120,000 - 150,000; Full time

Benefits offered by this job

Premium health coverage

401K matching

Disability insurance (short/long-term)

Pet Insurance

Education reimbursement

Transit and parking benefits

Job summary

Delaware Nation Industries (DNI) is seeking a Senior Systems Administrator to serve as a technical lead in a mixed Windows/Linux enterprise environment at Wright-Patterson AFB, OH. You will administer core infrastructure, virtualization, storage, databases, and hosting services while enforcing cybersecurity requirements and DoD compliance.

You will mentor other IT staff, support lifecycle upgrades, and coordinate with engineers and stakeholders to maintain secure, reliable services.

Qualifications

• Minimum of 7 years of experience as a Systems Administrator in enterprise IT environments.
• Experience administering complex infrastructure in a mixed-OS enterprise environment, including Windows-based systems.
• Experience supporting virtualization, storage, hosted services, and platform administration.
• Experience troubleshooting complex infrastructure and service issues in an enterprise environment.
• Demonstrated experience implementing secure, compliant systems per DoD cybersecurity requirements.
• Proven ability to lead, mentor personnel, and act as a senior escalation point.
• Must possess an active DoD 8570.01-M IAT Level I certification (Security+).
• Must possess an active Secret security clearance or higher.

Responsibilities

• Serve as a senior systems administrator and technical lead in a mixed Windows/Linux enterprise environment.
• Administer and support enterprise infrastructure, including servers, virtualization, storage, databases, hosted services, and related technologies.
• Manage core services such as VMware vSphere, network storage, file services, web hosting, and application hosting.
• Troubleshoot and resolve complex issues affecting infrastructure, performance, and availability.
• Support upgrades, lifecycle management, and service-improvement initiatives.
• Implement and maintain cybersecurity requirements, including system hardening and PKI integration.
• Provide leadership, mentorship, and escalation support to IT staff.
• Coordinate with engineers, cybersecurity, and stakeholders to ensure secure, interoperable services.
• Improve administrative processes and operational workflows.
• Support automation and standardization using enterprise tools.

Skills

Senior systems administrator

Windows-based enterprise systems

Technical leadership

Mentorship

DoD 8570.01-M IAT Level I Security+

Active DoD Secret clearance

Automation scripting (PowerShell/Bash)

Tools

VMware vSphere

Enterprise storage

Active Directory

PowerShell

Bash

Job description

Delaware Nation Industries (DNI) is seeking a Senior Systems Administrator to serve as a technical lead in a mixed Windows/Linux enterprise environment at Wright-Patterson AFB, OH. You will administer core infrastructure, virtualization, storage, databases, and hosting services while enforcing cybersecurity requirements and DoD compliance.

You will mentor other IT staff, support lifecycle upgrades, and coordinate with engineers and stakeholders to maintain secure, reliable services.