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DATA CENTER NETWORK ENGINEER Location: Hybrid | Bellevue, WA Area Titles: Staff and Principal (multiple roles available) BUILD THE NETWORK FOUNDATION FOR NEXT-GENERATION AI INFRASTRUCTURE ABOUT THE OPPORTUNITY A well-funded, rapidly growing AI infrastructure company is building a next-generation cloud platform designed to power the full lifecycle of artificial intelligence. The organization is developing a comprehensive AI infrastructure, platform, and services portfolio that supports the full spectrum of AI workloads—including large-scale compute, model training, fine-tuning, inference, and emerging agentic AI applications. Backed by significant long-term investment, the company combines the speed, ownership, and innovation of a startup with the stability and resources of an established parent organization. Engineering teams are intentionally lean, highly collaborative, and AI-native, leveraging modern automation and tooling to build world-class infrastructure capable of supporting the industry's most demanding AI workloads. We're seeking a Principal Data Center Network Engineer to architect and build the networking foundation for a multi-tenant AI cloud platform. This is a greenfield opportunity to define the network architecture supporting GPU clusters, tenant isolation, security, and high-performance connectivity across next-generation AI infrastructure.     THE OPPORTUNITY As one of the earliest networking engineers on the infrastructure team, you'll own the design, automation, and evolution of the data center network that powers a rapidly expanding AI platform. You'll work across a multi-vendor networking environment, partnering closely with infrastructure, hardware, platform, and cloud engineering teams to deliver secure, resilient, and high-performance networking at scale. This is a highly visible Principal-level individual contributor role offering significant technical ownership and influence over the long-term networking strategy of the organization.     WHAT YOU'LL DO - Design, build, automate, and operate data center networking supporting large-scale GPU clusters, AI workloads, and multi-tenant cloud services. - Develop secure tenant isolation architectures that ensure performance, scalability, and security across customer environments. - Design resilient, highly available network architectures across compute, storage, and infrastructure services. - Work across multiple networking platforms and vendors, including technologies from Arista, Juniper, HPE, and other enterprise networking providers. - Partner closely with hardware, infrastructure, virtualization, and platform engineering teams to optimize networking for AI training and inference workloads. - Build infrastructure automation to simplify deployment, configuration management, monitoring, and operational excellence. - Define networking standards, architecture documentation, and engineering best practices as the infrastructure organization grows. - Evaluate emerging networking technologies and help shape the long-term evolution of the company's AI networking platform.   WHAT WE'RE LOOKING FOR - Significant experience designing, deploying, and operating large-scale data center networks within hyperscale cloud, AI infrastructure, HPC, or enterprise environments. - Deep expertise across multiple enterprise networking platforms, with demonstrated experience supporting at least two major vendors such as Arista, Juniper, HPE, Cisco, or equivalent technologies. - Strong understanding of multi-tenant networking, segmentation, tenant isolation, and network security architecture. - Experience designing highly available, scalable, and automated networking solutions supporting mission-critical production environments. - Strong automation mindset with experience implementing Infrastructure as Code, network automation, or programmable networking. - Ability to operate independently in a fast-paced, early-stage environ