Network & IT Infrastructure Administrator - Must Bilingual in Korean

SBT Global; Los Angeles (CA); On-site; USD 80,000 - 110,000; Full time

Job summary

SBT Global is seeking a Network & IT Infrastructure Administrator to support our Los Angeles office and regional operations. The role covers LAN/WAN, VPN, wireless, AD, DNS/DHCP, and end-user support for about 200 users in office and warehouse environments.

The ideal candidate will have hands-on networking and IT support experience, the ability to work independently, and collaborate with internal teams, vendors, and business stakeholders.

Qualifications

• 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, and security.

Responsibilities

• Manage, monitor, and maintain LAN/WAN, wireless, VPN, and network security environments.
• Configure and support routers, switches, firewalls, and wireless access points.
• Troubleshoot connectivity, performance, routing, switching, and wireless issues.
• Support network upgrades, expansions, and infrastructure improvement projects.
• Maintain network documentation, diagrams, standards, and procedures.
• Coordinate with carriers, vendors, and service providers for issue resolution.
• Assist with firewall policies, VPN access, and access control management.
• Provide onsite and remote IT support for ~200 users.

Skills

Networking

Active Directory

VPN

Firewall

Wi‑Fi/WLAN

Documentation

Customer Service

Education

Bachelor's Degree in IT/CS/Engineering

Tools

Cisco Meraki

Azure AD

Microsoft 365

Job description

Network & IT Infrastructure Administrator - Must Bilingual in Korean

• Full-time

Full-time, On-site

We are seeking a proactive and technically skilled Network & IT InfrastructureAdministrator to support our Los Angeles office and regional business operations. This positionis responsible for maintaining network infrastructure, supporting approximately 200 usersacross 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, andbusiness stakeholders.

1. Network Infrastructure Administration

• Manage, monitor, and maintain LAN/WAN, wireless, VPN, and network securityenvironments.
• Configure and support network devices including routers, switches, firewalls, andwireless 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 andimplementation activities.
• Assist with network security administration including firewall policies, VPN access, andaccess control management.

2. IT Infrastructure & Systems Support

• Support Windows-based infrastructure, Active Directory, DNS, DHCP, file services, anduser 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 equipmentsetup.
• Serve as the primary point of contact for local IT support requests and escalations.
• 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, orIT 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 Wireless Infrastructure
• Experience supporting Windows Server environments and Active Directory.
• Experience providing user support in office and warehouse/manufacturingenvironments.
• 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, andAccess Control.
• Experience with VoIP, Unified Communications, and wireless network optimization.
• Familiarity with network monitoring and packet analysis tools.

Certifications:

• CompTIA Network+
• Microsoft Certified Credentials

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