Hiring: Senior IS Systems Administrator Company: Modern Technology Solutions, Inc. (MTSI) Location: Beavercreek, OH Job Posted Time: 2026-09-10 12:13:41 Target Skills & Keywords : DNS, Firmware, Linux, Microsoft Office, SAP, Secret Clearance, Systems Engineering, TCP/IP, Windows Server About the job Required Skills: •Requires proactive problem solving and troubleshooting/diagnostic skills. •Demonstrated capacity to provide after-hours/on-call support for critical services •Demonstrated capacity to lift standard PC equipment and peripherals for the purpose of installation / moves / replacements / etc. Approximately 50 lbs. •Demonstrated capacity to work on multiple projects and tickets at the same time •Bachelor’s degree in computer science, Information Systems or related technical degree; or bachelor’s degree in non-related field accepted with adequate training and experience •Minimum of four (4) years of experience working in an IA-related field •Minimum of six (6) years of experience in System Administration •CompTIA Security+ certification or ISC2 CISSP Qualifications: •Current DoD Secret clearance with the ability to obtain a TOP SECRET/SCI clearance. •Please Note: U.S. Citizenship is required for most MTSI positions. •Modern Technology Solutions, Inc. (MTSI) is co-owned by more than 2800 engineers, analysts, and professionals dedicated to providing high caliber services to aerospace and defense and intelligence customers across the US. We are always looking for the best to join us as we grow. •For additional company information, please visit: www.mtsi-va.com Compensation: •Deploy and configure desktops/laptops, printers, networking devices, and software Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!