Systems Administrator

SMS is seeking an Intermediate NOSC (Network Operations and Security Center) Technician/Network Administrator to support monitoring large-scale operations on a high-profile DOD contract. The I3TS program provides enterprise-wide IT support to enable DTRA's Information Management & Technology Directorate (ITD) to consolidate, modernize, and continuously innovate the delivery of IT services and mission capabilities to DTRA's internal and external mission partners operating in CONUS and OCONUS locations.

Since 1976, SMS has specialized in modernizing legacy IT and sustaining complex enterprise environments for federal agencies. With the goal of building long-term partnerships with our customers, we invest in our employees by providing the training, tools, and support they need to keep critical missions operational, improve performance, and reduce risk. SMS is headquartered in McLean, Virginia, with offices and on-site operations at customer locations throughout the United States. For additional information on SMS, visit

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Job Responsibilities

• Support the Network Operations and Security Center (NOSC) for the Agency on a 24x7x365 basis, in accordance with requirements for a Defense Threat Reduction Agency NOSC and appropriate DoD Directives. Included in this objective, you will maintain real-time situational awareness of the DTRA IT Infrastructure and supported environments; shall lead restorative actions to ensure all networks, servers, network devices, and services remain operational and available.
• Monitor, manage, troubleshoot, fix/repair, install security patches, and communicate the health of the DTRA IT Server, Storage, and Network infrastructures to ensure continuous, secure, and efficient access to all DTRA partners.
• Provide the full range of support services required to manage the day-to-day operations and systems administration of the DTRA IT computing environment, ensuring reliable, secure, and efficient availability of the current and evolving DTRA IT services and capabilities.
• Triage degradations and outages by isolating the issue, performing troubleshooting and remediation steps, escalating as needed, and following through to resolution.
• Report and conduct triage with vendors, DoD, and Government agencies; which includes opening incident tickets with these organizations and providing critical data for triage.
• Draft and send emails for initial, updated, and resolved critical network events while adhering to established timelines for notification of critical network events and established Standard Operating Procedures.
• Provide application support to various DTRA offices as designated in Service Level Agreements (SLA) with those offices.
• Create incident tickets, change requests, and tasks in ServiceNow.
• Support Tier I-III system, networking, and engineering personnel to ensure network troubleshooting efforts.
• Oversee real-time monitoring of global enterprise networks using DoD-approved tools (e.g., SolarWinds)
• Develop and enforce operational procedures, incident response workflows, and escalation protocols.
• Interface with Mission Partners, DISA, Joint Forces, and Combatant Commands on network status, issues, and operational impacts.
• Prepare and deliver operational briefs, after-action reports (AARs), and executive summaries to senior leadership.
• Troubleshoot, resolve, and/or escalate technical issues based on ticket assignments, deskside or remotely, as necessary.
• Correlate events and incidents for management of IT Services.
• Provide prompt and friendly customer service to all DTRA personnel.
• Document and communicate degradation of services or outage issues to customers and help with resolution.
• Follow ITSM and ITIL processes to ensure quality of services and prompt resolution.

• SHIFT WORK: The position we have open is for working days (0600-1800) the beginning of the week (Every Sunday - Tuesday and every other Wednesday).

Required Qualifications

• 4-8 years of prior experience or Bachelor's degree with 3-5 years of prior experience in network operations, help desk, or IT support role. Specific experience, education and training may be considered in lieu of degree.
• Must be a U.S. citizenship and hold an active DoD TS/SCI at time of consideration.
• Must possess an active CompTIA Security+ CE or equivalent prior to start.

Desired Qualifications

• Oral and written communication for change procedures, and management updates at all levels of government and contractor leadership.
• Familiarity with monitoring tools (e.g., SolarWinds or similar).
• Experience with ServiceNow Ticket system.
• Proficient in Active Directory and managing user accounts and security groups.
• Understanding of TCP/IP, DNS, DHCP, VPNs, firewalls, and network protocols.
• Strong problem-solving and communication skills.
• Ability to work in a high-availability, fast-paced environment with attention to detail.

Salary Range - $74,500 - $82,500

SMS is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

REQ # 2026-5460