Senior Network Administrator – Multi-Site & Cloud

Hadrian; Los Angeles, Northern (CA, KY); Hybrid; USD 154,000 - 185,000; Full time

Benefits offered by this job

Medical insurance

Dental insurance

Vision insurance

Life insurance

401k

Relocation assistance

Flexible vacation

Equity

Job summary

Hadrian, based in Los Angeles, seeks a Network Administrator to deploy and manage network infrastructure across new facilities and cloud environments. The role is hands-on, focusing on bringing up sites, applying network changes, and ensuring reliable connectivity.

You will work with infrastructure, IT, security, and operations teams to deploy networks, automate with IaC, and maintain a high-availability production environment across on-premise and cloud networks.

Qualifications

• 5+ years of experience in network administration, network operations, or infrastructure engineering.
• Strong understanding of TCP/IP networking, routing, switching, wireless, VLANs, DNS, and DHCP.
• Experience with VPN technologies (GlobalProtect, IPsec site-to-site tunnels, remote access VPNs).
• Experience supporting multi-site enterprise networks.
• Experience with cloud networking environments (AWS or Azure).
• Familiarity with Infrastructure-as-Code tools (Git, Terraform, Ansible, Pulumi, CICD, etc.).
• Experience troubleshooting network performance and connectivity issues.
• Strong operational mindset and ability to work in fast-paced environments.

Responsibilities

• Deploy and configure network infrastructure for new facilities and site expansions.
• Implement and manage network changes, upgrades, and operational improvements.
• Configure and maintain routers, switches, firewalls, VPNs, and wireless infrastructure.
• Deploy and support VPN technologies including GlobalProtect and site-to-site VPN tunnels.
• Design and build a robust SD-WAN ecosystem.
• Support cloud networking environments such as AWS and Azure.
• Support networking for Kubernetes clusters and containerized workloads.
• Build and maintain Infrastructure-as-Code (IaC) automation for network provisioning and configuration.
• Rack, cable, and deploy network hardware across facilities and data centers.
• Troubleshoot connectivity, routing, DNS, and performance issues across LAN/WAN and cloud networks.
• Work with ISPs and telecommunications providers for circuit provisioning, troubleshooting, and redundancy.
• Coordinate with low-voltage vendors for cabling, fiber runs, and network infrastructure installation.
• Support connectivity for security cameras, door access systems, and facility infrastructure.
• Support corporate Wi-Fi networks and wireless access points.
• Maintain monitoring, documentation, and operational runbooks for network infrastructure.
• Participate in on-call rotations, incident response, and after-hours maintenance windows.

Skills

TCP/IP

Routing

Switching

Wireless

DNS/DHCP

VPNs

Education

CCNA / CCNP

Tools

Git

Terraform

Ansible

Pulumi

Job description

Hadrian, based in Los Angeles, seeks a Network Administrator to deploy and manage network infrastructure across new facilities and cloud environments. The role is hands-on, focusing on bringing up sites, applying network changes, and ensuring reliable connectivity.

You will work with infrastructure, IT, security, and operations teams to deploy networks, automate with IaC, and maintain a high-availability production environment across on-premise and cloud networks.