Senior IT Systems Engineer - Public Sector

Lumen is the trusted network for the AI‑powered world, connecting people, data, and applications through our expansive fiber network and connected ecosystem. We enable secure, high‑performance connectivity across cloud, edge, and AI workloads for enterprises, governments, and communities. At Lumen, you’ll work on infrastructure customers rely on today and build for what’s next, where performance, security, and resilience matter. This is a high accountability environment where bold ideas drive real innovation for our customers, partners, and industry. The work is challenging, expectations are clear, and trust is built into how we operate. If you’re ready to take ownership, deliver meaningful impact, and help shape the future of AI‑ready connectivity, join us today. The Role 
  The Senior IT Systems Engineer provides advanced Tier II support by troubleshooting and repairing network devices, tools, and services for a nationwide fiber optic transport network as well as network support for two (2) geographically separated Network Operation Centers (NOC). The IT System Engineer II is operationally responsible for all IP and network management applications associated with the IP and transport platforms and maintaining 100% availability of IP and Network Management services in engineering and operations environment. The Senior IT Systems Engineer provides advanced Tier II support by troubleshooting and repairing network devices, tools, and services for a nationwide fiber optic transport network as well as network support for two (2) geographically separated Network Operation Centers (NOC). The IT System Engineer II is operationally responsible for all IP and network management applications associated with the IP and transport platforms and maintaining 100% availability of IP and Network Management services in engineering and operations environment.     The Main Responsibilities 
 Perform Transport Network Management functions in engineering and operations environment; operates as a technical SME. Work Tier-2 trouble escalations for SONET, OTN, and DWDM troubles. Trouble shoot and coordinate Tier-2 Network Implementations projects; services as technical POC for service Provisioning, configurations, and Test and Turn-up processes. Interface with Lead Engineers with network requirements and designs. Work and coordinate Tier-2 Network deactivation and decommission of Transport SONET, OTN, DWDM transport devices. Write and maintain technical operational documentation and SOP for Transport discipline supporting the NOC. Develop and maintain Circuit Layout Records, Network Diagrams, and other supporting documentation. Review and provide feedback to network as-built, Engineering Development Plans, and configuration management drawings. Perform Transport Network Management functions in engineering and operations environment; operates as a technical SME. Work Tier-2 trouble escalations for SONET, OTN, and DWDM troubles. Trouble shoot and coordinate Tier-2 Network Implementations projects; services as technical POC for service Provisioning, configurations, and Test and Turn-up processes.  Interface with Lead Engineers with network requirements and designs. Work and coordinate Tier-2 Network deactivation and decommission of Transport SONET, OTN, DWDM transport devices. Write and maintain technical operational documentation and SOP for Transport discipline supporting the NOC. Develop and maintain Circuit Layout Records, Network Diagrams, and other supporting documentation.  Review and provide feedback to network as-built, Engineering Development Plans, and configuration management drawings.   What We Look For in a Candidate 
  Requires a Top Secret/SCI clearance. On-call after hours/on-call support as required. Expected to work in a shift environment in support of 24x7 operations. Up to 10% travel can be expected. Must have technical skills and experience in the OTN/SONET/DWDM profession. Operate and accomplish