An L3 Network Engineer is a senior specialist responsible for designing, implementing, and maintaining complex enterprise network infrastructures, focusing on high availability and security. They provide 3rd-level technical support, troubleshooting critical, escalated incidents, and managing WAN/LAN, firewalls, and load balancers. 

Expertia AI +4

Key Responsibilities

• Advanced Troubleshooting: Handling 3rd-level IT tickets and resolving major, critical network incidents.
• Network Design & Implementation: Planning, designing, and deploying enterprise-level network architectures.
• Security & Optimization: Managing firewalls (e.g., Palo Alto, Fortinet), VPN gateways, and optimizing network performance.
• Infrastructure Management: Overseeing Data Center, WAN, and LAN technologies, including routers, switches, and load balancers.
• Documentation & Standards: Creating detailed network documentation, configurations, and maintaining standard operating procedures.
• Vendor Management: Coordinating with ISPs and external partners for service delivery. 
  Taggd +5

Required Skills and Qualifications

• Expertise: Deep knowledge of networking protocols (BGP, OSPF, EIGRP), VRF, HSRP, and VPC.
• Experience: Generally 5+ years of experience in network administration, with strong experience in Cisco, Juniper, or Arista technologies.
• Security Focus: Experience with Next-Generation Firewalls (NGFW) and intrusion prevention systems.
• Problem Solving: Strong analytical abilities for root cause analysis (RCA).
• Certifications: Often requires CCNP, CCIE, or equivalent certifications.
• Collaboration: Experience working in Agile/DevOps environments and mentoring junior staff.