Network & IT Infrastructure Administrator

Full-time, On-site

Salary: $70,000 ~ $100,000 DOE

English/Korean Bilingual 

We are seeking a proactive and technically skilled Network & IT Infrastructure Administrator to support our Los Angeles office and regional business operations. This position is responsible for maintaining network infrastructure, supporting approximately 200 users across office and warehouse environments, and ensuring stable IT operations.
The ideal candidate will possess strong networking knowledge, hands-on IT support experience, and the ability to work independently while collaborating with internal teams, vendors, and business stakeholders.

1. Network Infrastructure Administration

•  Manage, monitor, and maintain LAN/WAN, wireless, VPN, and network security environments.
• Configure and support network devices including routers, switches, firewalls, and wireless access points.
• Troubleshoot network connectivity, performance, routing, switching, and wireless issues.
• Support network upgrades, expansions, and infrastructure improvement projects.
• Maintain network documentation, diagrams, standards, and operational procedures.
• Coordinate with carriers, vendors, and service providers for issue resolution and implementation activities.
• Assist with network security administration including firewall policies, VPN access, and access control management.

2. IT Infrastructure & Systems Support

• Support Windows-based infrastructure, Active Directory, DNS, DHCP, file services, and user account administration.
• Perform system monitoring, patch management, and routine operational maintenance.
• Assist with IT infrastructure deployments, upgrades, and migration projects.
• Maintain IT asset inventory, lifecycle management, and documentation.

3. End User Support

• Provide onsite and remote technical support for approximately 200 users.
• Troubleshoot hardware, software, printing, conferencing, and connectivity issues.
• Support employee onboarding, offboarding, workstation deployment, and equipment setup.
• Serve as the primary point of contact for local IT support requests and escalations.

4. Project & Vendor Coordination

• Coordinate with internal IT teams, external vendors, and business stakeholders.
• Support office, warehouse, and infrastructure expansion initiatives.
• Participate in IT standardization, cybersecurity, and operational improvement projects.
• Assist in implementing corporate IT policies and best practices.

Required:

• Bachelor's Degree in Information Technology, Computer Science, Engineering, or related 
• field.
• Minimum 3 years of experience in Network Administration, Infrastructure Operations, or IT Support.

Strong knowledge of:

• TCP/IP, DNS, DHCP
• Routing & Switching
• LAN/WAN/WLAN Technologies
• VPN Technologies
• Firewall Administration
• Network Monitoring and Troubleshooting

Hands-on experience configuring and supporting:

• Cisco Routers, Cisco Switches, Cisco Firewalls
• Cisco Wireless Infrastructure
• Experience supporting Windows Server environments and Active Directory.
• Experience providing user support in office and warehouse/manufacturing environments.
• Ability to troubleshoot network and infrastructure issues independently.
• Strong customer service, communication, and documentation skills.
• Proficiency in Microsoft Office Suite (Excel, Outlook, PowerPoint, Word).

Preferred:

• Experience with Cisco Meraki administration and deployment.
• Experience with Microsoft Entra ID (Azure AD) and Microsoft 365 administration.
• Experience supporting warehouse, logistics, or manufacturing environments.
• Knowledge of network security technologies including IPSec, SSL VPN, IDS/IPS, and Access Control.
• Experience with VoIP, Unified Communications, and wireless network optimization.
• Familiarity with network monitoring and packet analysis tools.

Certifications:

• Cisco CCNA
• Cisco CCNP
• CompTIA Network+
• Microsoft Certified Credentials

All your information will be kept confidential according to EEO guidelines.