Fulltime Linux Windows System Administrator Jobs in Ohio

Applied Research Solutions is seeking a full-time detail-oriented System Administrator to join a fast-paced, cutting-edge technology program driving innovation in cyber security and autonomy. The ideal candidate thrives in dynamic environments, adapts quickly to evolving priorities, and is passionate about optimizing system performance and security.  This role requires hands-on technical expertise, proactive problem-solving, and the ability to manage and secure complex computing environments across multiple platforms and networks. You will work side-by-side with engineers, developers, and security personnel to ensure seamless system operations and rapid support in a mission-critical environment.

Why Work with us? 

Applied Research Solutions (ARS) is respected as a world-class provider of technically integrated solutions as we deliver premier talent and technology across our focused markets for unparalleled, continuous mission support. Awarded a Best Places to Work nominee since 2020, ARS recognizes that without our career- driven, loyal professionals, we would not be able to deliver state-of-the-art results for our mission partners. We firmly believe that prioritizing our employees is of the upmost importance. We provide a culture where our employees are challenged to meet their career goals and aspirations, while still obtaining a work/life balance. ARS employees are motivated through our industry competitive benefits package, our awards and recognition program, and personalized attention from ARS Senior Managers.  

Responsibilities include:

• Deploy, configure, maintain, and monitor servers, workstations, virtual machines, and network infrastructure supporting development, testing, and operational environments.
• Provide system support, troubleshoot incidents, and implement fixes or escalations as needed to meet aggressive program timelines.
• Manage user access, authentication, and account lifecycle in accordance with cybersecurity and compliance policies.
• Maintain configuration control, apply security patches, and perform regular system updates in accordance with STIGs and cybersecurity directives.
• Support DevOps workflows, including automation of system tasks using scripting languages (e.g., Bash, PowerShell, Python).
• Collaborate with cybersecurity teams to support accreditation efforts (RMF, NIST 800-53), vulnerability management, and incident response.
• Document procedures, system configurations, and recovery plans; maintain operational runbooks and SOPs.
• Other duties as assigned

Qualifications/ Technical Experience Requirements:

• Must be US Citizen
• Bachelor’s degree in Computer Science, Information Systems, or a related field, or equivalent experience.
• 5+ years of experience as a system administrator in fast-paced, mission-driven environments.
• Active Top Secret/SCI clearance
• Proficiency with Linux (Red Hat/CentOS/Ubuntu) and Windows Server administration.
• Experience managing virtualization platforms (e.g., VMware, Hyper-V, KVM).
• Familiarity with secure system configurations, DoD STIGs, and RMF frameworks.
• Strong scripting skills (e.g., Bash, PowerShell, or Python).
• Certifications such as Security+, CEH, Linux+, Microsoft Certified System Administrator (MCSA) certifications preferred
• Experience supporting classified or air-gapped systems.
• Exposure to CI/CD pipelines and containerized environments (Docker, Kubernetes).
• Familiarity with configuration management tools (e.g., Ansible, Puppet, or Chef).
• Excellent organizational and communication skills; ability to work both independently and as part of a high-performing team.
• Experience developing and collaborating on software (git, etc)

Nice to have qualifications:

• Certified Kubernetes Application Developer (CKAD cert)
• Experience achieving CTF/ATO/RMF
• AI/ML experience
• High performance computing (HPC +Slurm) experience in a research environment.
• Rancher Kubernetes Engine (RKE2)
• Security scanning tools (Fortify scans)

All positions at Applied Research Solutions are subject to background investigations. Employment is contingent upon successful completion of a background investigation including criminal history and identity check.

This contractor and subcontractor shall abide by the requirements of 41 CFR 60-741.5(a). This regulation prohibits discrimination against qualified individuals on the basis of disability, and requires affirmative action by covered prime contractors and subcontractors to employ and advance in employment qualified individuals with disabilities.

This contractor and subcontractor shall abide by the requirements of 41 CFR 60-300.5(a). This regulation prohibits discrimination against qualified protected veterans, and requires affirmative action by covered contractors and subcontractors to employ and advance in employment qualified protected veterans.