Network Security Engineer (Remote)

About the role

Cerebras Systems builds AI chips and works with model labs, enterprises and AI-native startups. It is hiring a Network Security Engineer for a remote, U.S.-based individual contributor role covering network security and network operations. You will support firewalls, segmentation, routing and switching, network access and automation, working with on-site data center and infrastructure teams. Occasional travel to Cerebras offices or data centers may be required.

Key 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 with on-site teams.
• Implement and maintain segmentation, firewall and ACL policies across corporate, compute, customer and infrastructure environments.
• Manage inbound and outbound 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.
• Review firewall rules, audit segmentation and remediate unnecessary network exposure.
• Automate network and security workflows with Terraform, Ansible, GitOps, Python and policy as code.
• Support network telemetry, detection, investigation and containment with Security Operations, and troubleshoot routing, switching, TCP/IP, DNS, TLS and cloud networking issues.
• Maintain architecture documentation, procedures and runbooks, and coordinate remote changes and incident response.

Required profile

• 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 networks, including working with remote hands.
• Ability to work independently remotely and collaborate across time zones, with occasional travel.

Required skills

• AWS networking (VPCs, transit gateways, security groups, load balancers)
• Palo Alto, Juniper, Cloudflare or similar platforms
• Terraform, Ansible, Python, GitOps or similar automation tools
• ZTNA, NAC, egress controls, TCP/IP, DNS and TLS
• Valuable: AI/HPC environments, ZTNA and VPN architectures, DNS filtering, SWG, proxy or SASE platforms, network detection and incident response