Senior Systems Admin - Windows/Linux, DoD Secured Infra

DNI (Delaware Nation Industries); Dayton (OH); On-site; USD 90,000 - 130,000; Full time

Benefits offered by this job

Premium health benefits

401K matching

Disability insurance

Pet insurance

Professional development

Job summary

Delaware Nation Industries (DNI) seeks a Senior Systems Administrator to lead and optimize a mixed Windows/Linux enterprise environment at Wright-Patterson AFB, OH. You will administer core infrastructure, support hosting services, and drive cybersecurity compliance initiatives while mentoring junior staff.

The role requires DoD 8570.01-M IAT Level I certification and an active Secret clearance or higher, with hands-on experience across virtualization, storage, and identity services.

Qualifications

• Minimum of 7 years of experience as a Systems Administrator in enterprise IT environments.
• Experience with Windows-based enterprise systems and Linux in an enterprise setting.
• Experience with virtualization, enterprise storage, hosted services, and platform administration.
• Demonstrated ability to lead, mentor, and serve as a senior escalation point.
• Active DoD 8570.01-M IAT Level I certification (e.g., Security+).
• 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 platforms, storage systems, databases, hosted services, and related enterprise technologies
• Manage core services such as VMware vSphere, network storage, file services, web hosting, and application hosting
• Troubleshoot and resolve complex issues affecting infrastructure, integrated services, system performance, and operational availability
• Support infrastructure upgrades, lifecycle management, technology refresh efforts, and service improvement initiatives
• Implement and maintain cybersecurity requirements, including system hardening, vulnerability remediation, PKI integration, and support for Assessment and Authorization activities
• Provide technical leadership, mentorship, and escalation support to administrators and other IT personnel
• Coordinate with engineers, cybersecurity personnel, mission partners, and stakeholders to maintain reliable, secure, and interoperable services
• Improve administrative processes, operational workflows, and standard operating procedures
• Support automation and standardization using enterprise administration and configuration management tools

Skills

Windows OS

Linux OS

Virtualization

Enterprise storage

Networking

Scripting

Security+

Tools

VMware vSphere

PKI

Active Directory

Job description

Delaware Nation Industries (DNI) seeks a Senior Systems Administrator to lead and optimize a mixed Windows/Linux enterprise environment at Wright-Patterson AFB, OH. You will administer core infrastructure, support hosting services, and drive cybersecurity compliance initiatives while mentoring junior staff.

The role requires DoD 8570.01-M IAT Level I certification and an active Secret clearance or higher, with hands-on experience across virtualization, storage, and identity services.