New

Senior IS Systems Administrator

Modern Technology Solutions, Inc.
tuition reimbursement, 401(k)

4141 Colonel Glenn Highway (Show on map)
Sep 10, 2026
The Senior Systems Administrator develops and maintains all systems, applications, security and network configurations.Responsible for installing new software releases, system upgrades, installing patches and resolving server and desktop related issues.Troubleshoots network performance issues and maintains a disaster recovery plan to include routine backup and recovery.Engineer solutions, research, and plans for adoption of new technologies to provide a competitive advantage to the company.Establishes practices, procedures, and concepts related to Information Technology as it relates to the organization.Administers Collateral, Special Access Program (SAP) and Sensitive Compartmented Information (SCI) information systems (IS).Handles system administration and cyber security such as antivirus maintenance and patching for Classified systems, as well as end-user system support for Unclassified systems. This is a dual-role position supporting both the Classified systems and Unclassified Enterprise. Maintain customer-required Information Assurance (IA) certifications such as Security+ as required Work with security personnel to identify and remediate findings Schedule, perform, and maintain records of Operating System patching, application patching, system maintenance, antivirus updates, and software/hardware changes Implement and maintain system backups as needed Deploy and configure desktops/laptops, printers, networking devices, and software Troubleshoot network hardware/software (routers, switches, etc.) Install/upgrade operating systems and application software Image systems with Microsoft Development Toolkit (MDT) Diagnose Windows 11, Office 2019/2022/2024/365 and other application issues Malware and virus removal/repair Track and maintain computer assets using asset management tools Provides analysis related to the design, development, and implementation of hardware and software solutions Manage all aspects of Windows Active Directory infrastructure Manage LINUX-based systems Support secure communications equipment including STE/VIPER phones and TACLANE Encryptors. Installation, configuration, and support of servers, enterprise storage and associated equipment, network and direct attached storage systems and associated equipment Plan and coordinate system utilization, and perform growth analysis and capacity planning Review current system and make technical/process recommendations for improving efficiency Develop, implement, manage, and maintain security standards, procedures, and guidelines for multiple platforms Develop scripts and automation to improve operations productivity Deploy servers for new or existing projects; keep deployed systems current with OS, hardware and software patches and upgrades Demonstrate professionalism in response to customer requests Coordinate with customers to upgrade, retire or consolidate applications and server hardware as appropriate Research and/or contact vendors regarding technical problems and solutions Troubleshoot servers Document systems deployments and configurations Classified system administration experience should include: Experience administering systems in a classified environment Patching and Security hardening of classified systems Basic knowledge of federal security requirements and mandates [e.g., RMF, Federal Information Processing Standards (FIPS), National Institute of Standards and Technology (NIST)] Security hardening and Certification & Accreditation experience Experience with classified networks/environments such as JWICS and SGN as well as secure communications devices including STE/VIPER phones and TACLANE Encryptors. Technical experience should include: Strong Microsoft Windows background with some knowledge of UNIX/LINUX Knowledge of various computer software applications, hardware platforms, networking components and LAN/WAN architecture Experience installing, configuring, and troubleshooting Windows Operating Systems Experience managing user and group permissions in Active Directory Experience troubleshooting redirected folders and offline file synchronization issues Experience building, monitoring, patching, configuring and troubleshooting Windows 2019/2022/2025 servers Installation and configuration of hardware and software Performance tuning and Troubleshooting Account maintenance Proficiency in the basic Microsoft Office (365 experience preferred) Experience troubleshooting common networking issues on client systems Strong knowledge of standard networking protocols such as TCP/IP, DHCP, DNS, and network hardware such as switches and routers Experience working with business class server hardware; including hardware/firmware upgrades and troubleshooting Experience with common network protocols and services (TCP/IP stack), such as DNS, SMTP, FTP, Telnet, SSH etc. Experience with Storage management, such as partitioning local disks and/or SAN/NAS implementations Experience with a major system deployment and management technology, such as Microsoft MDT/SCCM, or other General experience should include: Experience in a fast-paced environment Deep interest in learning and developing new skills Excellent oral and written communication skills Strong organizational skills and ability to manage multiple tasks concurrently Excellent time management, scheduling, and organizational skills Ability to work well independently as well as follow detailed instructions for completing tasks Must be a team player and be able to work within all levels of a project team Excellent Customer Service skills Requires proactive problem solving and troubleshooting/diagnostic skills. Ability to provide after-hours/on-call support for critical services Ability to lift standard PC equipment and peripherals for the purpose of installation / moves / replacements / etc. Approximately 50 lbs. Ability to work on multiple projects and tickets at the same time Experience working in a corporate IT environment Minimum Training/Education Required: 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 Desired Training/Education: One or more enterprise level certifications such as MCSA or MCP certification CompTIA Network+ Clearance Requirements: 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. Our first core value is that employees come first.We challenge our co-workers to provide the highest level of support and service and reward them with some of the best benefits in the industry.All new co-workers start with 20 days PTO, 6% 401k match with immediate vesting, semi-annual bonuses, and eligibility to participate in our Employee Stock Ownership Plan (ESOP).We offer other employee focused benefits, including up to $10k in tuition reimbursement and an optional zero-dollar deductible BCBS health insurance plan. MTSI's core capabilities are Systems Engineering and Integration, Modeling and Simulation, Test and Evaluation, Acquisition and Program Support, and Mission Assurance services.Our expertise includes ballistic missile defense, air defense, air vehicle survivability, unmanned aircraft, flight test operations, intelligence support, and cyber/space/homeland defense. For additional company information, please visit:www.mtsi-va.com Interesting Work: Our co-workers support some of the most important and critical programs to our national defense and security. Values: Our first core value is that employees come first. We challenge our co-workers to provide the highest level of support and service, and reward them with some of the best benefits in the industry. 100% Employee Owned: We have a stake in each other's success, and the success of our customers. It's also nice to know what's going on across the company; we have company wide town-hall meetings three times a year. Great Benefits - Most Full-Time Staff Are Eligible for: Starting PTO accrual of 20 days PTO/year + 10 holidays/year Flexible schedules 6% 401k match with immediate vesting up to $9k annually Semi-annual bonus eligibility (July and December) Company funded Employee Stock Ownership Plan (ESOP) - a separate qualified retirement account Up to $10,000 in annual educational reimbursement Other company funded benefits, like life and disability insurance Optional zero deductible Blue Cross/Blue Shield health insurance plan Track Record of Success: We have grown every year since our founding in 1993. Modern Technology Solutions, Inc. (MTSI) is a 100% employee-owned engineering services and solutions company that provides high-demand technical expertise in Digital Transformation, Modeling and Simulation, Rapid Capability Development, Test and Evaluation, Artificial Intelligence, Autonomy, Cybersecurity and Mission Assurance MTSI delivers capabilities to solve problems of global importance. Founded in 1993, MTSI today has employees at over 20 offices and field sites worldwide. For more information about MTSI, please visit www.mtsi-va.com MTSI embraces nine core values including our first core value of Employees come first. Consistent with our Core Values, we are committed to Equal Opportunity, making decisions without regard to race, color, religion, sex, national origin, age, military/veteran status, disability, or any other characteristics protected by applicable law. MTSI is committed to Equal Employment Opportunity and providing reasonable accommodations to applicants and employees with physical and/or mental disabilities.