Network Security Engineer

Cerebras; Sunnyvale (CA); On-site; USD 155,000 - 190,000; Full time

Job summary

Jobtailor in Sunnyvale, CA is seeking a senior network security professional to design, operate, and secure data center and cloud networking. You will lead implementation of segmentation, VPNs, and firewall strategies while coordinating across teams to keep systems resilient and compliant.

The role emphasizes hands-on work in data centers, on-site collaboration, and continuous improvement of security controls and documentation for complex environments.

Qualifications

• 7+ years of experience in network security, network engineering, cloud security, or infrastructure security.
• 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.
• 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.
• Must satisfy applicable U.S. export compliance requirements or obtain required authorization

Responsibilities

• Build, operate, and secure network infrastructure supporting data centers, cloud environments, corporate networks, and AI systems
• Operate firewalls, ACLs, segmentation, and network security controls across data center, corporate, and AWS environments
• Support deployment, configuration, troubleshooting, maintenance, and lifecycle management of data center networks
• 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 with Security Operations
• Troubleshoot routing, switching, TCP/IP, DNS, TLS, and cloud networking issues
• Maintain network architecture documentation, procedures, and runbooks

Skills

Network Security

AWS Networking

Firewall Management

Automation with Terraform

Network Troubleshooting

Tools

Terraform

Ansible

GitOps

Palo Alto

Juniper

Cloudflare

Job description

• Build, operate, and secure network infrastructure supporting data centers, cloud environments, corporate networks, and AI systems
• Operate firewalls, ACLs, segmentation, and network security controls across data center, corporate, and AWS environments
• Support deployment, configuration, troubleshooting, maintenance, and lifecycle management of data center networks
• 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 with Security Operations
• Troubleshoot routing, switching, TCP/IP, DNS, TLS, and cloud networking issues
• Maintain network architecture documentation, procedures, and runbooks

Requirements

• 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
• Must satisfy applicable U.S. export compliance requirements or obtain required authorization

Core Competencies

Demonstrates extensive experience in network security and engineering, with a strong focus on managing and securing data center and cloud environments. Proficient in implementing automation tools and maintaining network infrastructure while ensuring compliance with security policies.

Highest-signal resume keywords

• Network Security
• AWS Networking
• Firewall Management
• Automation with Terraform
• Network Troubleshooting

ATS Optimization Keywords

Hard Skills

• Network Security
• Network Engineering
• Cloud Security
• Routing
• Switching
• VPN
• TCP/IP
• DNS
• TLS
• Segmentation

Soft Skills

• Written Communication
• Documentation Skills

Industry Keywords

• Data Center
• Network Infrastructure
• Egress Controls
• ZTNA
• NAC

Tools & Technologies

• Terraform
• Ansible
• GitOps
• Palo Alto
• Juniper
• Cloudflare