Principal Network Security Architect
Cerebras · Sunnyvale, CA
About this role
## Principal Network Security Architect ### About Cerebras Cerebras Systems builds the world’s largest AI chip—56x larger than GPUs—enabling industry-leading training and inference speeds (10x faster than GPU-based hyperscale cloud inference). Cerebras works with leading model labs, global enterprises, and AI-native startups. ### About the Role Cerebras is seeking a **Principal Network Security Architect** to lead the design and evolution of the networks connecting Cerebras data centers, offices, and cloud environments—the foundation for ultra-fast AI inference for customers such as **OpenAI** and **AWS**. You will set architectural direction for **high-performance, resilient enterprise and data center networking**, partnering closely with **Site Reliability, Security, and Infrastructure** to operate at the scale and speed required by compute demand. ### Responsibilities - Define and own the architectural roadmap for Cerebras’s **enterprise, data center, and cloud network** estate. - Co-author secure design and lifecycle management for high-performance data center networking (including **spine/leaf**, **RDMA**, and high-bandwidth fabrics supporting wafer-scale compute). - Build and maintain an **AI-agent-based analysis and review framework** for network changes, using observed network patterns and use cases for self-improvement. - Partner with Network Security to deliver **segmented, zero-trust-aligned** network designs across data center and corporate environments. - Set standards for **resiliency, observability, and capacity planning** across the global network. - Mentor engineers across regions (US, Canada, Bangalore, and beyond) and serve as the senior technical voice on cross-functional network initiatives. - Stay ahead of emerging networking patterns relevant to **AI infrastructure** and translate them into actionable architecture decisions. ### Skills & Qualifications - **10+ years** experience in enterprise and/or data center network engineering, including hands-on design and operations at scale. - Deep understanding of **cloud networking** and **service mesh**, with emphasis on **Kubernetes service mesh** and **virtual networks**. - Deep expertise in **routing, switching, and data center fabrics** (e.g., **BGP**, **EVPN/VXLAN**, and high-bandwidth/low-latency designs). - Hands-on experience networking for **high-performance compute / AI/ML workloads** (RDMA; RoCE/InfiniBand exposure a plus). - Strong proficiency in **network automation** (Infrastructure as Code such as **Ansible/Terraform**, version-controlled configuration, and CI/CD for network change). - Working knowledge of cloud networking (AWS preferred), including **VPCs**, **transit gateways**, **Direct Connect**, and hybrid connectivity patterns. - Experience operating networks at **multi-site global scale** (capacity planning, incident response, vendor management). - Excellent written and verbal communication skills; able to lead architecture conversations across technical and non-technical audiences. ### Why Join Cerebras People who are serious about software make their own hardware. At Cerebras, you’ll help build a breakthrough AI platform beyond GPU constraints, publish/open-source cutting-edge AI research, and work on one of the fastest AI supercomputers in the world—within a startup environment and a simple, non-corporate culture. Apply today and help drive groundbreaking advancements in AI!
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