Senior Network Engineer

iT1, a leading national technology solution provider headquartered in Tempe, AZ, is looking for a skilled and experienced Senior Network Engineer to join our Consulting team. iT1 has been ranked as one of Arizona’s Best Places to Work for over a decade, running in the Small Business category. This role is an exciting opportunity to continue your career in the IT consulting and managed services world.

You will be exposed to many of the top technology offerings in the market and can work with some of the most talented engineers in the country.
The Senior Network Engineer provides senior-level operational ownership and Tier 3 engineering support for network, connectivity, wireless, security, optical, voice, and unified communications infrastructure. The role focuses on service restoration, complex troubleshooting, approved changes, platform health, escalation coordination, documentation, continuous improvement, and reliable delivery within the managed-services scope. The engineer works closely with iT1 service management, the dedicated Client Success Manager, client stakeholders, carriers, and technology vendors.

• Act as a Tier 3 subject-matter escalation point for complex incidents and service degradations.
• Perform alert validation, incident triage, service-restoration actions, incident remediation, problem management, root-cause analysis, post-incident reviews, known-error tracking, and corrective-action follow-up.
• Plan and implement approved standard, normal, and emergency changes with impact assessment, maintenance-window coordination, rollback planning, validation, closure documentation, and follow-up actions.
• Coordinate OS, firmware, and infrastructure patching activities within the approved scope, including planning, testing, rollout, validation, and vendor coordination.
• Provide remote break-fix and engineering support for routers, LAN and data center switches, firewalls, load balancers, network access control, Cisco ACI/APIC, WAN edge devices, VPN infrastructure, routing protocols, switching protocols, VLANs, segmentation, QoS, and high-availability pairs or clusters.
• Monitor, investigate, and improve infrastructure availability and performance using health, capacity, telemetry, configuration, threshold, log, interface, latency, jitter, packet-loss, redundancy, and failover indicators where supported.
• Troubleshoot and manage Cisco SD-WAN controllers, edge devices, overlays, tunnels, internet circuits, Starlink connectivity, and site-to-site or remote-access VPN services.
• Support wireless controllers and access-point infrastructure, including availability, registration, RF utilization indicators, authentication failures, roaming, interference, firmware status, configuration backup, security alerts, capacity, and coverage trends.
• Monitor and manage in-scope optical network nodes supporting dark-fiber connectivity, including interfaces, optical levels, span health, hardware alarms, environmental status, protection paths, protection switching, redundancy, utilization, and vendor escalation.
• Support voice and unified communications platforms including Audio Codes Routing Manager, One Voice Operations Center, Session Border Controllers, Media Pack gateways, SIP trunks, Cisco Webex Contact Center, and Microsoft Teams voice/Direct Routing integration.
• Maintain accurate HLD/LLD documentation, logical and physical diagrams, configuration records and backups, SOPs, runbooks, troubleshooting procedures, IPAM/DNS/DHCP records, inventories, monitoring definitions, change logs, and knowledge-base articles.
• Experience with operational platforms that may include Logic Monitor, Cisco Catalyst Center, Cisco Thousand Eyes, Net Brain, Solar Winds, Cisco SD-WAN Manager, and the Client’s ITSM platform.
• Provide…