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Senior Systems Administrator

Job in Dayton, Montgomery County, Ohio, 45444, USA
Listing for: Modern Technology Solutions, Inc.
Full Time position
Listed on 2026-08-22
Job specializations:
  • IT/Tech
    Systems Administrator, Cybersecurity, IT Support, Cloud Computing: Infrastructure & Operations
Salary/Wage Range or Industry Benchmark: 90000 - 130000 USD Yearly USD 90000.00 130000.00 YEAR
Job Description & How to Apply Below

How you will contribute to our National Security and Defense mission:

MTSI is seeking a highly motivated and experienced Systems Administrator to support our team in safeguarding information systems for a government customer at WPAFB, OH. This individual will be responsible for the installation, configuration, maintenance, and troubleshooting of Linux and Windows-based systems in a secure environment. This individual will also be responsible for building out cloud and hybrid cloud infrastructure including the designing of cloud-native architectures targeted for AWS Gov Cloud, Azure Government, and high-side on-premises virtualized data centers.

This role is an in-person role that is located with our government customer's organization at WPAFB.

You’ll be a great fit for this role if:
  • You have a passion for information technology, defense, and space systems and advanced technologies.
  • You understand the urgent need to modernize our defense systems and give our troops the best possible tools.
  • Paying attention to detail and providing excellent customer service in a professional environment is a skill you excel at.
  • You are passionate about continuous learning and growth, and you seek opportunities to challenge yourself.
  • You are driven to make a meaningful impact through your work.
Responsibilities
  • Install, configure, and maintain operating systems, hardware, virtual environments, and network devices to meet program needs
  • Perform system hardening to ensure compliance with established security policies
  • Troubleshoot and resolve hardware and software issues
  • Manage user accounts, permissions, and access controls
  • Implement and maintain system backups and disaster recovery procedures
  • Monitor system performance and identify areas for improvement
  • Collaborate with other IT staff to ensure system stability and availability
  • Provide technical support to end-users
  • Maintain accurate documentation of system configurations and procedures
  • Install and maintain Dev Sec Ops  tools (Git Lab, Artifactory, etc.)
  • Install and maintain Atlassian suite of tools (Jira, Confluence, Mattermost)
  • Install and maintain ACAS suite of tools (Nessus, Tenable SC, etc.)
  • Working knowledge of compliance frameworks such as RMF, DISA STIGs, and NIST 800-53
Qualifications Required
  • Working knowledge of Windows server administration
  • 6+ years of experience administering Linux systems (e.g., Red Hat, CentOS, Ubuntu)
  • Cloud experience including AWS and Azure
  • Experience with system standup and configuration including group policy
  • Excellent troubleshooting and problem-solving abilities
  • Strong communication and interpersonal skills
  • Stay current with emerging technologies and best practices in systems administration
  • Previous work supporting test or research and development environments
  • Coordinate with program stakeholders, engineers, and other IT professionals to align system capabilities with mission objectives
  • Provide technical expertise and recommendations for system improvements and upgrades
  • Must have in-depth knowledge of DoD, National and applicable service and agency security policy, manuals and standards. Must have the ability to work in a dynamic environment and effectively interact with numerous DOD, military/civilian personnel and industry partners
Education
  • Master's degree in an IT-related field
  • Bachelor's degree and relevant professional experience can be accepted in lieu of a master's degree
Required Certifications
  • CompTIA Security+
Even better if you have these desired skills
  • Experience as a Data Transfer Agent (DTA)
  • Experience with virtualization technologies (e.g., VMware, KVM).
  • Experience with configuration management, automation tools, and scripting languages (e.g., Ansible, Bash, Python, Puppet, Chef)
  • Experience with Containerization and Orchestration tools (e.g., Kubernetes, K8S, K3S)
  • Certifications:

    ISC2 CCSP;
    CompTIA SecurityX (CASP+), AWS Certified Dev Ops Engineer - Professional, Azure Dev Ops Engineer Expert, or CKA (Certified Kubernetes Administrator)
Clearance Requirements

Must possess an active DoD Top Secret (TS) security clearance (with SCI and SAP eligibility).

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Position Requirements
10+ Years work experience
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