Network Support Engineer

Zenlayer

Network Support Engineer providing Tier 1 and Tier 2 support for Zenlayer's global network. Ensuring fast resolution of customer issues while maintaining high availability across infrastructure.

Posted 6/1/2026full-timeDiamond Bar • California • 🇺🇸 United StatesMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

FirewallsSwitchingTCP/IP

About the role

Key responsibilities & impact

Provide Tier 1 and Tier 2 network support by opening, troubleshooting, and resolving customer and internal tickets
Diagnose and resolve network issues including congestion, routing changes, hardware failures, and vendor related incidents
Configure, provision, and maintain top-of-rack switches, core Layer 3 switches/routers, and SDN services
Monitor network infrastructure, respond to alerts, and ensure issues are addressed within defined SLAs
Maintain the integrity, reliability, and performance of Zenlayer’s global network
Create, update, and improve network support documentation, procedures, and operational processes
Participate in on call rotations and provide after-hours and weekend support as needed
Collaborate with internal teams to plan, research, and design resilient network architectures for IT projects
Track, escalate, and manage incidents to resolution while providing clear and timely communication to customers

Requirements

What you’ll need

Minimum 3 years of hands-on networking experience
Current CCNA certification or equivalent practical experience
Strong understanding of networking fundamentals including TCP/IP, routing, switching, STP, VLAN/VXLAN, and firewalls
Experience working with Juniper EX, Centec, and Cisco switches
Background supporting customer environments in a helpdesk or NOC-style support role
Excellent customer service skills with the ability to communicate technical concepts clearly and professionally
Exceptional attention to detail, including documentation and written communication
Ability to troubleshoot complex technical issues under pressure in a fast-paced environment
Strong multitasking, prioritization, and time-management skills
Self-motivated, team-oriented, and able to work independently with minimal supervision
Availability to work nights and weekends as part of on-call rotation
Working knowledge of Microsoft Office Suite
Familiarity with SDN technologies (e.g., OpenFlow) is a plus
Mandarin bilingual proficiency is required.

Benefits

Comp & perks

Hybrid work schedule

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

network supporttroubleshootingnetwork configurationTCP/IProutingswitchingVLANVXLANfirewallsSDN

Soft Skills

customer servicecommunicationattention to detailtroubleshooting under pressuremultitaskingprioritizationtime managementself-motivatedteam-orientedindependent work

Certifications

CCNA