Network Security Engineer - Sunnyvale, CA, United States
Originally posted 8 September 2026 by the employer.
This role supports the network infrastructure for our AI systems.
About the role
As a Network Security Engineer, you will 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 and AWS environments.
- 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.
- 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.
What you'll need
- 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.
- Proficiency with Terraform, Ansible, Python, GitOps, or similar automation tools.
- Strong understanding of ZTNA, NAC, egress controls, TCP/IP, DNS, and TLS.
- Ability to work regularly on-site in Sunnyvale, CA and perform hands-on work in data center environments.
Skills: firewalls, segmentation, AWS networking, Terraform, Ansible
This role has been open 36 days — well below the 61-day median for Systems Software Engineering roles.
Systems Software Engineering · Systems Software
|
Open roles in category
689
|
Median days open
61 d
|
Median salary
$217k
|
See the full market breakdown ▾Category comparison, skills in demand, and who else is hiring
| Metric | Cerebras | All employers we track in this specialty (689 roles · 72 employers) |
|---|---|---|
| Open roles in this specialty | 13 | 689 |
| Open roles in the wider Software, Firmware & Systems family | 76 | 6136 · 145 employers |
| Median days open | 80 d | 61 d (+19 d vs this employer) |
| Median salary (USD postings) | — | $217k |
Skills observed across this category: firewalls, segmentation, AWS networking, Terraform, Ansible
Who's hiring in this category
- Qualcomm · 166 open roles · median 78 d
- NVIDIA · 137 open roles · median 47 d
- AMD · 64 open roles · median 50 d
- Mobileye · 28 open roles · median 74 d
- Broadcom · 21 open roles · median 51 d
- Arm Holdings · 20 open roles · median 112 d
How we counted: 689 open Systems Software Engineering (Systems Software) roles from 72 employers tracked in the SemiconductorJobs index, counted 15 Oct 2026. Specialty figures count only roles carrying this exact specialty label, so an employer's related work in neighbouring specialties is not included there — it is counted in the wider Software, Firmware & Systems family row. Figures refresh nightly.