Infrastructure Network Engineer

About Us

SK AX USA, Inc. delivers specialized IT, infrastructure, and digital transformation services across the United States. We support large-scale, mission-critical programs involving advanced infrastructure, operational technology, and next-generation AI environments. Our infrastructure teams help clients design, implement, and maintain reliable technology environments that support daily operations and future growth. Learn more: https://www.skaxusa.com/

Position Overview

We are seeking an experienced Infrastructure Network Engineer to design, implement, and manage network infrastructure in San Jose, California. You will support network availability, scalability, and security through hands-on configuration, monitoring, and troubleshooting across multiple vendor platforms. Your responsibilities will include network design, device administration, performance optimization, cabling coordination, and technical documentation. Working closely with on-site teams, vendors, and global colleagues, you will resolve technical issues and maintain dependable connectivity across the supported environment. This role requires strong technical judgment, ownership of day-to-day network operations, and clear communication. Korean language proficiency is preferred to support collaboration with our global teams.

Responsibilities

• Design and deploy LAN/WAN solutions that meet business requirements for availability, performance, scalability, and security.
• Evaluate network requirements and recommend improvements to architecture, capacity, and connectivity.
• Plan network upgrades and validate configurations and connectivity before implementation.
• Configure and maintain routers, switches, firewalls, L4/L7 load balancers, IP PBX systems, and related network equipment.
• Maintain device configurations, configuration backups, and network inventories.
• Coordinate equipment updates and configuration changes with stakeholders to minimize operational disruption.
• Monitor network availability, utilization, and performance using appropriate monitoring tools.
• Investigate alerts and identify potential capacity, reliability, or security concerns.
• Implement automation to improve routine administration, configuration consistency, and operational efficiency.
• Coordinate UTP and fiber-optic cabling installations, testing, and troubleshooting with vendors and on-site teams.
• Maintain accurate network diagrams, IP address records, device inventories, and configuration documentation.
• Document operating procedures, technical changes, and troubleshooting guidance to support ongoing maintenance and knowledge sharing.
• Diagnose and resolve connectivity, routing, VPN, security, and network performance issues.
• Coordinate with internal teams, service providers, and equipment vendors to restore service.
• Conduct root cause analysis and implement corrective actions to reduce recurring incidents.
• Communicate issue status, operational impact, and resolution progress to relevant stakeholders.
• Maintain secure network configurations, firewall rules, access controls, and VPN connectivity.
• Follow applicable security policies, technical standards, and change management procedures.