# Senior WAN Network Engineer

**Company:** [Cerebras Systems](https://hotfix.jobs/companies/cerebras-systems)
**Location:** Sunnyvale, CA
**Role:** DevOps / SRE
**Experience:** 6+ years
**Skills:** BGP, Ipsec, Macsec, Vxlan, Evpn, Arista, Cisco, Juniper, Palo Alto, Python, Ansible, Terraform, AWS, Azure, GCP
**Posted:** 2026-04-15

> Designs, implements, and optimizes global WAN networks using leased lines, dark fiber, and advanced routing protocols like BGP for low-latency, high-availability connectivity. Requires 6+ years experience, bachelor's degree, CCIE/JNCIE certs, and expertise in automation tools like Python/Ansible/Terraform.

## Job Description

## 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.

## 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.

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