Senior System Administrator

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

AFRL plans and executes U.S. Air Force programs in basic research, exploratory development, and advanced development. Delaware Nation Industries (DNI) provides organizational support to AFRL at Wright-Patterson Air Force Base, OH, including the secure operation and continuous improvement of information systems that support the AFRL mission.

The Senior Systems Administrator serves as a senior technical lead in a complex mixed Windows/Linux enterprise environment. This role is responsible for the administration, security, sustainment, and improvement of core infrastructure and hosted services, including server platforms, virtualization, storage, databases, web and application hosting, and identity services. The ideal candidate is an experienced enterprise administrator with broad technical depth, strong operational judgment, and the ability to provide technical leadership, mentorship, and escalation support in a compliance-driven environment.

Key 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

Requirements

• 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 strong experience with Windows-based enterprise systems
• Experience supporting core infrastructure services such as virtualization, enterprise storage, hosted services, and platform administration
• Experience troubleshooting complex infrastructure and service issues in an enterprise environment
• Demonstrated experience implementing and maintaining secure, compliant systems in accordance with Department of War cybersecurity requirements
• Demonstrated ability to provide technical leadership, mentor personnel, and serve as a senior escalation point
• Must possess an active DoD 8570.01-M IAT Level I certification, such as Security+
• Must possess an active Secret security clearance or higher

Preferred Qualifications

• Experience with VMware vSphere administration in an enterprise environment
• Experience with enterprise storage administration, including network storage and file services
• Experience supporting databases, hosted web services, and application hosting platforms
• Experience supporting Linux systems in an enterprise environment
• Experience with identity and access management, including Active Directory and related authentication services
• Experience with patching, configuration management, automation, or systems management platforms
• Experience with scripting or task automation using PowerShell, Bash, or similar tools
• Experience supporting high-availability, regulated, or mission-critical environments

Benefits Include:

• Covers 100% of employee benefit premiums, including Medical (PPO or HDHP Option), Vision, Dental
• Matching 401K
• Short- and Long-Term Disability
• Pet Insurance
• Professional Development/Education Reimbursement
• Parking and Transit Benefits for NY, NJ, ATL, and DC Metro areas

Other Duties:

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at any time with or without notice.

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans