New

Network Administrator

Modern Technology Solutions, Inc.
401(k)
United States, Ohio, Dayton
Apr 15, 2026
MTSI is seeking an experienced Network Administrator to support existing and future networks for a customer in Dayton OH. You willbe responsible forassistingin the administration and maintenance of existing networks as well as design and implementation networks at various levels of classification. You will install,configureandmaintainfirewalls, routers and switches, including patching, backup, logging, and scanning of these systems. Additionally, you will support application configuration for SIEM solutions, troubleshooting, security technical implementation guidance (STIG) reviews, access control, and integration between systems. Individuals best suited for this role must be able to work autonomously andpossessthe ability to find and solve complex problems as well as assist others with solving IT problems they are facing. They should also enjoy problem solving and be able to cope with sudden changes in taskings. Ideally this candidate wouldpossessa wide range of experience with the installation, configuration, and administration ofon-premisesystems. Responsibilities Dutiesto beindependently executedincludebut are not limited to: Developing,implementingandmaintainingnetworking technologies. Ensuring security and compliance of network devices such as switches,routersand firewalls. Perform day to day network support tasks associated with adds, moves, changes and troubleshooting on networks. Administer, manage, andmaintainall routers, switches, andfirewalls. Responsible for troubleshooting for all LAN/WAN/Wireless alerts and issues. Responsible for configuration of network monitoring and reporting systems. Maintain all network layer 1-3 documentation, IP/VLAN/subnet planning documents as well as OV-1, Dataflow, etc. Work within established configuration and change management policies to ensure awareness, approval and success of changes made to the network infrastructure. Select and implement security tools, policies, and procedures in conjunction with ISSO/ISSM needs. Application ofappropriate STIG, SRG and industry best practice controls tomaintainsecure network baselines. Work with vendors and other IT personnel for problem resolution. Required Qualifications:* Minimum of five (5) years' relevant experience as a Network Administrator or Engineer. Experience working with advanced routing protocols such as BGP and EIGRP Expertisein network design, routing, virtual networks, subnets, general TCP/IP at all layers in IPv4. Strong grasp of DoD RMF controls as applied to networks to includeappropriate NIST, CNNSI and JSIG documents. Understanding of Radius and switch end-point AAA. Experience supporting multiple classification of networks. Ability to capture technical approaches, designs, block diagrams, and implementations in written and graphical form. Strong ability to design, implement, and manage complex network infrastructures. Experience with CommScope, Forcepoint, Dell and Cisco networking technologies. Experience with troubleshooting and resolving network issues. Excellent communication and teamwork skills. Ability to work efficiently with small teams. Must have a DoDM 8140 (Formally 8570) certifications meeting intermediate or better requirements in Network Operations Support (i.e., Cloud+ or GICSP or SSCP or Security+ or GSEC) Security+ or similar certification. Must possess a TS/SCI DesiredQualifications: ATop Secretsecurity clearance with SCI and SAP eligibility Ten (10) years' relevant experience as a network engineer/administrator. Experience in an Agile/DevSecOpsenvironment. Knowledge of military platforms, systems, and operations. Experience working on-site in a government client environment. Security Clearance Level Required:Must have at least a Secret clearance to start, with the ability to obtainaTSwithSCIandSAP eligibility. Please Note:U.S. Citizenship isrequired.* 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.