Network Security Engineer
Cerebras · Sunnyvale, CA
About this role
## Network Security Engineer **Company:** Cerebras Systems **Location:** Sunnyvale, CA (regular on-site work in data centers) **Type:** Hands-on individual contributor Cerebras builds the world’s largest AI chip and is seeking a **Network Security Engineer** to build, operate, and secure the network infrastructure supporting **data centers, cloud environments, corporate networks, and AI systems**. --- ### What you’ll do - Operate **firewalls, ACLs, segmentation, and network security controls** across data center, corporate, and AWS environments. - Support **hands-on data center network operations**: deployment, configuration, troubleshooting, maintenance, and lifecycle management. - Implement and maintain **segmentation, firewall, and ACL policies** across corporate, compute, customer, and infrastructure environments. - Manage inbound/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/partner connectivity**. - Perform recurring **firewall rule reviews, segmentation audits, and remediation** of unnecessary exposure. - Automate network/security workflows using **Terraform, Ansible, GitOps, Python, and policy as code**. - Partner with **Security Operations** on network telemetry, detection, investigation, and containment. - Troubleshoot **routing, switching, TCP/IP, DNS, TLS, and cloud networking** issues. - Maintain **network architecture documentation, procedures, and runbooks**. --- ### Skills & qualifications - **7+ years** 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. - AWS networking experience: **VPCs, transit gateways, security groups, 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 data center work. --- ### Relevant experience (a plus) - 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 --- ### Why join Cerebras People who are serious about software make their own hardware. Cerebras is building a breakthrough AI platform beyond GPU constraints and is growing rapidly. **Equal Opportunity:** Cerebras is committed to creating an equal and diverse environment and is an equal opportunity employer. **Apply:** https://www.cerebras.ai/join-us **Privacy/CCPA:** https://www.cerebras.net/privacy/
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