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# Network Security Engineer

- **Company:** Cerebras Systems
- **Location:** Sunnyvale, CA, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Amazon Web Services, Cloud Computing, Cloud Computing Security, Cyber Security, Data Centers, Network Address Translation, Domain Name System (DNS), Virtual Private Networks (VPN), Python (Programming Language), Network Security, Network Troubleshooting, Network Architecture, Routing, Network Administration, Ansible, Zero Trust Network Access, Runbook, TCP/IP, Wi-Fi Technology, Policy as Code, Graphics Processing Unit (GPU), Transport Layer Security, Load Balancing, Computer Network Operations, Firewalls (Computer Science), Juniper, Data Center Networking, Git Flow, Palo Alto Networks, Cloudflare, Terraform
- **Published:** October 27, 2026
- **Apply:** https://www.careerbuilder.com/job-details/network-security-engineer-sunnyvale-ca--9a36769f-9053-471c-b2ff-1ac6869c9ad8

## About the Role

Network Security, GPU (Graphics Processing Unit), Artificial Intelligence (AI), Startup, Network Operations Center, Network Security, Network Administration/Management, Cloud Computing, Firewalls, Automation, * 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.

Relevant Experience

Experience in several of the following is valuable:

 * AI, HPC, or large-scale compute environments.
 * Data center networking and security.
 * AWS network security and segmentation.
 * ZTNA and VPN architectures.
 * DNS filtering, SWG, proxy, or SASE platforms.
 * Vendor and partner connectivity.
 * Public exposure and attack surface remediation.
 * Network detection and incident response.

## Description

* 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.