Network Operations and Security Center; NOSC) Technician; Senior

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JCS Solutions is seeking an experienced Sr. Network & Systems Engineer to support large-scale operations on a high-profile Department of War (DoW) contract at Fort Belvoir, VA
. This role supports the I3TS program, which delivers enterprise-wide IT services to DTRA's Information Management & Technology Directorate (ITD). The successful candidate will serve as a senior technical authority responsible for engineering, systems analysis, operational oversight, and strategic modernization initiatives across Unclassified, Secret, and Top Secret environments. This position plays a critical role in ensuring secure, resilient, and mission-focused IT operations for stakeholders throughout CONUS and OCONUS locations.

• Join a premier technology firm specializing in innovative solutions.
• Be part of a collaborative, inclusive, and innovative work culture.
• Enjoy tremendous growth potential in a high-performing team environment.
• A robust benefits package:
  • Health, dental, and vision insurance
  • Life insurance
  • Short-and-long term disability
  • Paid time off (PTO)
  • 401k retirement plan with employer match
  • Annual Professional Development Reimbursement Program
  • And more!

• Apply advanced systems analysis techniques to advise DTRA leadership and mission partners on enterprise technology solutions, system requirements, capacity planning, and architectural roadmaps.
• Analyze, document, test, and modify network and server configurations, security controls, and Active Directory environments to align with DoD directives and security baselines.
• Serve as the 24x7x365 Network Operations and Security Center (NOSC) Operations Watch Officer during assigned shifts.
• Lead troubleshooting and resolution efforts for complex enterprise system and network outages across multiple environments.
• Develop diagnostic strategies, perform event correlation, and conduct root-cause analysis for high-impact incidents.
• Support continuous improvement initiatives related to operational procedures, incident response frameworks, and SLA-driven workflows.
• Evaluate and integrate third-party technologies and vendor solutions within enterprise environments.
• Manage and support configurations within the Service Now ITSM framework.
• Interface directly with mission partners, DISA, Joint Forces, and Combatant Commands regarding operational status, network performance, vulnerabilities, and technical solutions.
• Prepare and deliver operational briefings, executive summaries, technical reports, and After-Action Reports (AARs) to senior leadership.
• Provide technical leadership and guidance to Tier I, II, and III support personnel.
• Monitor and maintain enterprise network health using DoD-approved monitoring tools, including Solar Winds.
• Troubleshoot, resolve, and escalate technical incidents through remote or onsite support as required.
• Ensure continuous and secure access to enterprise systems supporting mission-critical operations.

• Must be a US Citizen.
• Active Top Secret/SCI security clearance at the time of consideration.
• Bachelor's degree in Computer Science, Information Technology, Engineering, or a related field and 8-12 years of relevant experience; OR
• Master's degree in a related field and 6-10 years of relevant experience.
• Equivalent high-level technical experience may be considered in lieu of a degree.
• Advanced understanding of enterprise networking technologies, including TCP/IP, DNS, DHCP, VPNs, routing, switching, and firewalls.
• Experience supporting enterprise server, storage, and virtualization infrastructures.
• Experience administering Active Directory in large-scale enterprise environments.
• Experience utilizing…