Senior Network Security Engineer - AI-Scale Data Center

Cerebras; Sunnyvale (CA); On-site; USD 140,000 - 190,000; Full time

Job summary

Cerebras Systems in Sunnyvale, CA seeks a Network Security Engineer to design, operate, and secure our data-center and cloud networking. You will manage firewalls, VPNs, segmentation, and automated workflows, enabling secure, scalable AI infrastructure.

The role emphasizes hands-on work in data centers, collaboration with Security Operations, and strong scripting and cloud skills to protect critical systems and services.

Qualifications

• 7+ years of experience in network security, network engineering, cloud security, or infrastructure security.
• Strong hands-on experience with firewalls, ACLs, segmentation, routing, switching, VPNs, and network troubleshooting.
• Experience operating data center and on-premises network infrastructure.
• Experience with AWS networking, including VPCs, transit gateways, security groups, and load balancers.
• Experience with Palo Alto, Juniper, Cloudflare, or similar platforms.
• Proficiency with Terraform, Ansible, Python, GitOps, or similar automation tools.
• Strong understanding of ZTNA, NAC, egress controls, TCP/IP, DNS, and TLS.
• Strong written communication and documentation skills.
• Ability to work regularly on-site in Sunnyvale, CA and perform hands-on work in data center environments.

Responsibilities

• Operate firewalls, ACLs, segmentation, and network security controls across data center, corporate, and AWS environments.
• Support hands-on data center network operations, including deployment, configuration, troubleshooting, maintenance, and lifecycle management.
• Implement and maintain segmentation, firewall, and ACL policies across corporate, compute, customer, and infrastructure environments.
• Manage inbound and outbound network controls, including public exposure, NAT, load balancers, DNS filtering, proxies, and egress policies.
• Implement and operate VPN, ZTNA, NAC, Wi-Fi, and vendor or partner connectivity.
• Perform recurring firewall rule reviews, segmentation audits, and remediation of unnecessary network exposure.
• Automate network and security workflows using Terraform, Ansible, GitOps, Python, and policy as code.
• Support network telemetry, detection, investigation, and containment in partnership with Security Operations.
• Troubleshoot routing, switching, TCP/IP, DNS, TLS, and cloud networking issues.
• Maintain network architecture documentation, procedures, and runbooks.

Skills

Firewalls

ACLs

Segmentation

VPNs

AWS networking

Routing

Switching

ZTNA

NAC

Terraform

Ansible

Python

GitOps

DNS/TLS

Documentation

Tools

Terraform

Ansible

Python

GitOps

Palo Alto

Juniper

Cloudflare

Job description

Cerebras Systems in Sunnyvale, CA seeks a Network Security Engineer to design, operate, and secure our data-center and cloud networking. You will manage firewalls, VPNs, segmentation, and automated workflows, enabling secure, scalable AI infrastructure.

The role emphasizes hands-on work in data centers, collaboration with Security Operations, and strong scripting and cloud skills to protect critical systems and services.