Network Infrastructure Engineer
General MatterLos Angeles, CA
Full Time
Posted December 1, 2025
$110k - $170k
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Listing evidence and provenance
- Source
- Greenhouse View original listing
- Freshness
- Open in the current public read path; this is not an employer guarantee.Last observed October 5, 2026
- Classification
- Modern power-system classification not yet published for this listing.Legacy source industry field: Nuclear Energy
- Pay provenance
- Employer-provided pay
Job Description
We’re looking for an experienced Network Infrastructure Engineer to design, implement, and operate the network infrastructure that connects our people, systems, and facilities.
Key Responsibilities
- Design, deploy, and maintain enterprise and lab networks spanning multiple buildings and facilities.
- Architect and operate air-gapped and isolated networks with strict segmentation, access control, and security monitoring.
- Collaborate with systems and engineering teams to design and optimize high-performance compute (HPC) clusters and their supporting network infrastructure.
- Configure and manage switching, routing, wireless, and firewall systems (Cisco, Fortinet, Juniper, or Unifi).
- Implement and maintain fiber-based WAN connectivity between buildings and remote sites.
- Manage LAN/WAN infrastructure, including VLANs, VPNs, DNS, DHCP, and QoS configurations.
- Integrate on-prem and cloud networking to support Azure and Microsoft 365 hybrid environments.
- Deploy and maintain network monitoring and alerting systems (e.g., PRTG, SolarWinds, Grafana, NetBox, Datadog).
- Develop resilient architectures with redundancy, observability, and security built in.
- Collaborate across IT, security, and engineering teams to support high-performance and secure operations.
- Document network designs, configurations, and operational procedures following ITSM and change management best practices.
- Troubleshoot and resolve complex networking issues across physical and virtual environments.
Requirements
- 5+ years of experience as a Network Engineer or equivalent technical role.
- Proven experience designing and operating multi-building or campus networks.
- Strong knowledge of fiber WAN, switching, routing, and firewalls (Cisco, Fortinet, Juniper, or Unifi).
- Experience building and maintaining air-gapped or segmented network environments.
- Familiarity with high-performance compute (HPC) or other low-latency networking systems.
- Proficiency with network monitoring, diagnostics, and alerting tools.
- Deep understanding of TCP/IP, VLANs, VPNs, routing protocols, DNS, DHCP, and network security.
- Excellent troubleshooting, documentation, and communication skills.
- Ability to take full ownership — from architecture to hands-on implementation and operations.
- Experience in aerospace, defense, or other regulated technical operational environments (e.g., GCC High, FedRAMP).
- Familiarity with Zero Trust, SDN, or network automation concepts.
- Scripting and automation skills using Python, Ansible, or PowerShell.
- Exposure to ITSM, incident/change management, and configuration control processes.
- Certifications such as CCNP, Fortinet NSE, Juniper JNCIP, or equivalent.
- Ability to work extended hours and weekends as necessary.
- Ability to come into our office every day. This role is 100% on site and in person.
- Currently a US Citizen with capability to obtain and maintain a US Q clearance.
Benefits & Perks
- The base salary range for this role is $110,000-$170,000 annually.
- Compensation bands are determined by role, level, location, and alignment with market data. Individual level and base pay is determined on a case-by-case basis and may vary based on job-related skills, education, experience, technical capabilities and internal equity. Please note that the stated salary range is an estimate and may be adjusted based on market conditions, business needs, or other factors. In addition to base salary, for full-time hires, you may also be eligible for long-term incentives, in the form of stock options, and access to medical, vision & dental coverage as well as access to a 401(k) retirement plan.
Ready to Apply?
Apply directly on General Matter's site
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