Senior WAN Network Engineer

Cerebras Systems•Sunnyvale, CA

About The Position

We are seeking a highly skilled WAN Network Engineer to design, implement, manage, and optimize global connectivity. The ideal candidate will have strong experience with carrier networks, routing protocols, and network security, and will play a critical role in ensuring high availability, performance, and reliability of global network services.

Requirements

Bachelor’s degree in Computer Science, Electrical Engineering, or Computer Engineering. Master’s degree is preferred.
6+ years of experience in WAN network engineering, or Service Provider network, or Hyper-scale Data Center environment.
Industry certifications such as, CCIE or JNCIE. Strong knowledge of BGP routing protocols and WAN technologies.
Experience with major network vendors such as Arista, Cisco, Juniper, or Palo Alto.
Strong troubleshooting and analytical skills, and excellent communication and documentation skills.
Experience with cloud networking and hybrid network architectures.
Expertise with network automation tools (Python, Ansible, Terraform).
Knowledge of network monitoring tools (SolarWinds, Kentik, ThousandEyes, or similar).
Ability to participate in on-call rotation and after-hours maintenance.

Responsibilities

Design, deploy, and maintain WAN network across leased lines and dark fiber for low latency and 99.999% availability.
Collaborate with telecom providers and ISPs for circuit provisioning, upgrades, and issue resolution.
Configure, troubleshoot, and optimize security and routing protocols (IPSec Tunnels, MACsec, BGP, VXLAN, EVPN).
Monitor WAN performance, latency, packet loss, capacity utilization. Analyze traffic patterns to predict growth and trigger circuit upgrades or hardware refreshes before bottlenecks occur.
Implement redundancy, failover, QoS, and traffic engineering to ensure business continuity.
Participate in network modernization and cloud connectivity projects (AWS, Azure, GCP).
Provide Tier 3 support for WAN-related incidents and root cause analysis.
Develop and maintain network documentation, diagrams, and standard operating procedures.
Use Python, Ansible, or Terraform to deploy configurations and manage network state at scale.
Support network security initiatives including site-to-site VPNs and perimeter connectivity. Ensure compliance with security, governance, and operational best practices.