Mission-Critical SysAdmin (TS/SCI) — Linux/Windows

Applied Research Solutions; Dayton (OH); On-site; USD 110,000 - 150,000; Full time

Job summary

Applied Research Solutions in Dayton, OH is seeking a full-time System Administrator to support a mission-critical cyber security and autonomy program. The role requires hands-on expertise across Linux, Windows, virtualization, and networked environments to ensure secure, reliable operations.

The ideal candidate has 5+ years of experience, TS/SCI clearance, DoD STIGs familiarity, and strong scripting. You will collaborate with engineers and security personnel to maintain systems, implement

Qualifications

• 5+ years of system administration experience in mission-driven environments.
• Active Top Secret/SCI clearance required.
• US Citizen status required.
• Experience with DoD STIGs and RMF frameworks.

Responsibilities

• Deploy, configure, maintain, and monitor servers, workstations, VMs, and network infrastructure.
• Provide system support, troubleshoot incidents, and implement fixes to meet timelines.
• Manage access controls and account lifecycle per cybersecurity policies.
• Apply security patches and perform regular updates per STIGs.
• Support DevOps through automation scripts (Bash, PowerShell, Python).
• Collaborate with cybersecurity teams on RMF, vulnerability management, and incident response.
• Document procedures, configurations, and recovery plans; maintain runbooks and SOPs.

Skills

Linux admin

Windows Server

Virtualization

Scripting

RMF/NIST

Cybersecurity

CI/CD

Docker/Kubernetes

Configuration mgmt

Education

Bachelor's degree in Computer Science or related field

Tools

VMware

Hyper-V

KVM

Ansible

Puppet

Chef

Git

Job description

Applied Research Solutions in Dayton, OH is seeking a full-time System Administrator to support a mission-critical cyber security and autonomy program. The role requires hands-on expertise across Linux, Windows, virtualization, and networked environments to ensure secure, reliable operations.

The ideal candidate has 5+ years of experience, TS/SCI clearance, DoD STIGs familiarity, and strong scripting. You will collaborate with engineers and security personnel to maintain systems, implement