Network Security Engineer (Remote)

Cerebras Systems builds the world's largest AI chip, 56 times larger than GPUs. This architecture allows Cerebras to deliver industry-leading training and inference speeds; over 10 times faster than GPU-based hyperscale cloud inference services. This order of magnitude increase in speed is transforming the user experience of AI applications, unlocking real-time iteration and increasing intelligence via additional agentic computation. Cerebras works with the leading model labs, global enterprises, and cutting-edge AI-native startups. OpenAI recently announced a multi-year partnership com/index/cerebras-partnership/ with Cerebras, to deploy 750 megawatts of scale, transforming key workloads with ultra high-speed inference. Cerebras is seeking a Network Security Engineer to build, operate, and secure the network infrastructure supporting our data centers, cloud environments, corporate network, and AI systems. This is a remote, U. S. -based individual contributor role working across network security and network operations. You will support firewalls, segmentation, routing and switching, network access, and automation while collaborating with on-site data center and infrastructure teams. Occasional travel to Cerebras offices or data centers may be required. RESPONSIBILITIES - Operate firewalls, ACLs, segmentation, and network security controls across data center, corporate, and AWS environments. - Remotely support data center network deployment, configuration, troubleshooting, maintenance, and lifecycle management in partnership with on-site teams. - 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. - Coordinate remote changes and incident response across distributed infrastructure and engineering teams. SKILLS AND 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 supporting data center and on-premises network infrastructure, including working effectively with remote hands. - 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 operate independently in a remote environment and collaborate across time zones. - Ability to travel occasionally to Cerebras offices or data centers as business needs require. 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. - Remote operation of geographically distributed network infrastructure.