Sr. Network Engineer, Network Operations, Data Center

**What to Expect** We are seeking an experienced Senior Network Engineer to drive network refresh and infrastructure operations across data center environments. This role requires hands\-on expertise in hardware migration/refresh planning, configuration management, and operational excellence. **What You'll Do*** Lead the planning and execution of large\-scale network refresh programs for switches and routers approaching or at End\-of\-Support, including hardware staging, configuration migration, and phased cutovers with minimal production impact * Develop, maintain, and implement detailed Method of Procedure (MOP) documents, migration runbooks, and rollback plans for all planned changes and refresh activities * Operate and maintain production data center network infrastructure across newly built and expanding clusters, ensuring high availability, reliability, and performance * Build and maintain operational dashboards (e.g., Grafana) to monitor network health, track refresh program progress, and validate post\-migration performance across data center clusters * Coordinate with vendors for TAC support escalations, RMA processing, firmware guidance, and support contract management * Create and maintain comprehensive network documentation, datacenter cutsheets, topology diagrams, IP address management (IPAM) records, and operational runbooks * Collaborate with cross\-functional teams — Compute, Storage, SRE, Security, and Datacenter team — to support cluster build\-outs, capacity expansions, and operational readiness * Participate in on\-call rotation and provide support during occasional weekends, after\-hours periods, and holidays as needed * Travel up to 10% as required to support datacenter projects and operations **What You'll Bring*** 6\+ years of experience in mid\- to large\-scale data center network operations and infrastructure * Extensive experience with Juniper platforms (QFX, MX, EX series) and Arista platforms and Arista EOS, including upgrades, con