Tier 3 Network Lead

DMI is a leading provider of digital services and technology solutions, headquartered in Tysons Corner, VA. With a focus on end-to-end managed IT services, including managed mobility, cloud, cybersecurity, network operations, and application development, DMI supports public sector agencies and commercial enterprises around the globe. Recognized as a Top Workplace, DMI is committed to delivering secure, efficient, and cost-effective solutions that drive measurable results.

About the Opportunity

DMI, LLC is seeking a Tier 3 Network Lead who owns the performance of wired and wireless infrastructure across four distributed sites and manages the full incident lifecycle across LAN, WAN, and cloud environments. This role is the senior technical authority for routing, switching, and network monitoring, directing Tier 1/2 escalations, coordinating ISP relationships, and leading network change management within an ITSM framework to ensure 24x7x365 availability.

Duties and Responsibilities

• Monitor and maintain LAN/WAN performance using SolarWinds Orion, including alert dependency configuration; diagnose and resolve outages, routing loops, circuit failures, and hardware faults.
• Manage wired and wireless infrastructure including Aruba IAP-734/735 APs, Aruba CX6300 switches, HPE Aruba Central, Cisco IOS, HP Switch CLI, TACACS+, and Wireshark.
• Use AWS CloudWatch; analyze trend data proactively to identify degrading hardware or flapping interfaces before service impact.
• Lead P1/P2 root cause analysis and stakeholder communications; maintain the Known Error Database (KEDB).
• Coordinate with ISPs on circuit installation, upgrades, and outage restoration; support data center operations and DAS infrastructure management.
• Provide technical direction to network support staff; partner with customer IT Security on NIST-aligned network security assessments.

Qualifications

Required Skills & Certifications:

• Expert-level knowledge of routing/switching protocols and multi-site LAN/WAN environments.
• Proficiency in SolarWinds Orion, Cisco IOS, Aruba Central, TACACS+, and Wireshark.
• Familiarity with ITIL 4 Incident and Problem Management.
• Required Certification: CCNP.

Citizenship Status Required

Must be a U.S. Citizen.

Physical Requirements

None required for this position.

Location

Washington, DC (Onsite, 7AM–6PM Monday–Friday).