Network Security Engineer

Cerebras Systems

Network Security Engineer designing and operating security controls for AI workloads at Cerebras Systems. Collaborating with Network Engineering, IT, and Security Operations teams to maintain security and operational integrity.

Posted 6/23/2026full-timeRemote • California • 🇺🇸 United StatesMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

AnsibleAWSCloudDNSFirewallsPythonSwitchingTCP/IPTerraform

About the role

Key responsibilities & impact

Design and operate firewall, segmentation, and zero-trust controls across data center, corporate, and cloud (AWS) networks.
Build and maintain network security infrastructure as code — including firewall rules, policy automation, and CI/CD-driven deployment.
Lead network lifecycle management: design review, configuration baselines, change automation, and ongoing rule hygiene.
Build detection capabilities for network-based attacker behaviors and partner with the Detection & Response team on response playbooks.
Implement and operate network access controls including ZTNA, VPN, and remote access patterns.
Drive periodic firewall rule reviews, segmentation audits, and remediation campaigns to reduce risk and complexity.
Document network security architecture, controls, and operating procedures in clear runbooks.

Requirements

What you’ll need

Master's degree or higher in computer science.
Deep expertise with industry leading firewalls, including policy design, automation, and operations.
Strong proficiency with infrastructure as code (Terraform, Ansible) and at least one scripting language (Python preferred).
Hands-on experience operating network controls in a major cloud environment (AWS preferred), including VPCs, transit gateways, security groups, and cloud-native firewalls.
Practical understanding of ZTNA, segmentation, and modern network access patterns.
Solid fundamentals in TCP/IP, routing, switching, DNS, and TLS — with the ability to troubleshoot across the stack.
Excellent written communication skills, with the ability to create clear documentation for both engineers and operators.

Benefits

Comp & perks

People who are serious about software make their own hardware.
Build a breakthrough AI platform beyond the constraints of the GPU.
Publish and open source their cutting-edge AI research.
Work on one of the fastest AI supercomputers in the world.
Enjoy job stability with startup vitality.
Simple, non-corporate work culture that respects individual beliefs.

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

firewall designnetwork security infrastructure as codepolicy automationCI/CD deploymentnetwork lifecycle managementdetection capabilitiesnetwork access controlsinfrastructure as codescripting (Python)TCP/IP

Soft Skills

excellent written communication

Certifications

Master's degree in computer science