Senior Network Architect

The Senior Network Architect is a senior individual contributor within the CSQUARE Network Engineering organization, responsible for hands‑on design and engineering of major network domains including backbone, metro fabrics, peering, and interconnection.

A significant amount of focus goes to the inter‑metro backbone program and carrier hotel expansion, detailed design, configuration standards, stitching implementation, peering and interconnection design, and implementation support. The remaining time will focus on resiliency, security design, network hygiene, contributions to standards and reference architectures, input into the long‑range technology roadmap, and Tier‑3 escalation support. Output is always specific and tangible.

Design documents, low‑level designs, MOPs, gap analyses, and clear technical specifications for the engineering and automation teams.

Contribute to the detailed design and deployment of the multi‑metro SR/MPLS backbone, including EVPN/VXLAN‑to‑MPLS stitching, traffic engineering, TI‑LFA fast‑reroute, capacity planning, and resiliency design. Execute carrier hotel buildouts in priority US markets for the purpose of implementing transport connectivity, SR/MPLS stitching, and peering designs in collaboration with the Optical Architect. Produce design documents, MOPs, SOPs, and operational runbooks required for backbone deployment and ongoing operations.

Design and implement peering and interconnection deployments within the established peering policy. IXP turn‑ups, BGP peering configuration, public and private peering, route server integration, and cloud on‑ramp design (AWS Direct Connect, Azure Express Route, Google Cloud Interconnect, OCI Fast Connect). Translate service definitions into deployable designs and provide technical input to the Network Automation Engineer and Portal team on provisioning requirements.

Design and implement components of the carrier‑grade resiliency architecture targeting 99.999% availability: failure domain modeling, redundancy, fast‑reroute, and protection switching. Implement zero‑trust security designs, DDoS mitigation (RTBH, Flow spec, scrubbing integration), and macro/micro‑segmentation within EVPN/VXLAN tenants. Participate in architecture reviews of major proposed changes and contribute to reference architectures and configuration standards.

Provide technical input into the long‑range network technology roadmap owned by the Sr. Director of Network Engineering; informing decisions on what gets built, replaced, or deferred within the candidate’s domain of expertise. Participate in vendor and platform evaluations, conduct proofs‑of‑concept, and assess emerging technologies (SRv6, AI‑assisted operations, next‑generation coherent optical) as assigned. For automation and observability, work closely with the Network Automation Engineer as a technically informed internal customer: contribute provisioning logic requirements, SR policy specifications, and observability needs grounded in real operational experience.

Proactively audit existing configurations, routing policies, and operational data to identify latent issues, configuration drift, inconsistencies with standards, and improvement opportunities. Hunt for the misconfiguration that hasn't caused an outage yet, the suboptimal design that's been quietly tolerated, the metric trend that hints at a problem six months out. Document findings, propose specific remediation with supporting evidence, and partner with Network Operations and Automation teams to drive fixes.

Treat the existing brownfield network as a system to be deeply understood, not just operated.

Serve as Tier‑3 escalation for complex production issues across backbone, metro fabrics, optical transport, and carrier hotel connectivity. Mentor mid‑level engineers through design reviews and direct technical collaboration. Participate in architecture review boards and contribute to knowledge‑sharing on backbone technologies, SR/MPLS, peering, security design, and automation patterns.

• 10–12+ years of…