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 https://openai.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 geo …