Network Engineer - L3

Acestack LLC

Los Angeles, CA

JOB DETAILS
SKILLS
Applications Security, BGP, CCIE - Cisco Certified Internetwork Expert, CCNP - Cisco Certified Network Professional, Cisco ASA (Adaptive Security Appliance), Cisco Routers, DHCP (Dynamic Host Configuration Protocol), DNS (Domain Name System), Documentation, EIGRP (Enhanced IGRP), Firewalls, Hardware Upgrades, High Availability, High Reliability, Identify Issues, Incident Management, Layer 3 Protocols, Local Area Network (LAN), Nagios Monitoring Tool, Network Administration/Management, Network Architecture/Engineering, Network Configuration Management, Network Monitoring, Network Performance/Analysis, Network Routers, Network Routing, Network Security, Network Support, Network Switching, On Call, Open Shortest Path First Protocol (OSPF), Performance Analysis, Performance Management, Problem Solving Skills, Production Systems, Root Cause Analysis, Standard Operating Procedures (SOP), TCP/IP (Transmission Control Protocol/Internet Protocol), VLAN (Virtual Local Area Network), VPN (Virtual Private Network), Wide Area Network (WAN), Wireless Communications
LOCATION
Los Angeles, CA
POSTED
Today
Job Title: Network Engineer - L3
Location: Los Angeles, CA / Rosemead, CA - Onsite
Type: 6-12 Months Contract
Experience:10+ Years

Job Description:
We are seeking an experienced Network Engineer (L3) to support and maintain enterprise network infrastructure in an onsite role. The ideal candidate will have strong hands-on experience with routing, switching, troubleshooting, and network operations in a large-scale environment.

Key Responsibilities:
  • Provide L3 network support for enterprise LAN/WAN environments
  • Configure, manage, and troubleshoot routers, switches, firewalls, and wireless networks
  • Monitor network performance and ensure high availability and reliability
  • Perform root cause analysis and resolve complex network issues
  • Support network upgrades, migrations, and hardware refresh initiatives
  • Work closely with infrastructure, security, and application teams
  • Maintain network documentation, diagrams, and SOPs
  • Participate in on-call support and incident management as required
Required Skills & Experience:
  • 10+ years of hands-on experience in Network Engineering (L3)
  • Strong experience with Routing & Switching (BGP, OSPF, EIGRP, VLANs, STP)
  • Hands-on expertise with Cisco networking technologies (routers, switches, ASA/Firepower)
  • Experience with LAN/WAN, TCP/IP, DNS, DHCP, VPN
  • Solid troubleshooting skills in production environments
  • Experience with network monitoring tools (SolarWinds, Nagios, or similar)
  • Ability to work 100% onsite in Los Angeles / Rosemead, CA
Preferred Qualifications:
  • Cisco certifications (CCNP / CCIE)
  • Experience in large enterprise or utility environments
  • Knowledge of network security and firewall technologies

About the Company

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Acestack LLC