L3 Network Support Engineer

Paracon

Duties & Responsibilities

Role Summary

The Network L3 Engineer acts as the technical SME, owning complex incidents, problem management, firewall governance, and continuous improvement for our clients premium network.

Key Responsibilities

  • Lead L3 incident resolution and perform Root Cause Analysis (RCA)
  • Design, review, and implement complex network and firewall changes

    Act as SME for:
  • Cisco LAN/WAN & Wireless, SDWAN issues
  • Cisco and Fortinet Firewalls (FortiGate)
  • Perform advanced firewall troubleshooting - Policy optimization, NAT, VPN, and traffic flow analysis
  • Use SolarWinds and Cisco DNA Center for proactive monitoring and assurance
  • Drive problem management and preventive initiatives
  • Maintain and improve runbooks, SOPs, and network documentation
  • Support security audits, compliance checks, and customer reviews
  • Coordinate with Cisco TAC and Fortinet TAC as required
  • Mentor L2 engineers and provide technical guidance
  • Participate in architecture reviews and network optimization discussions

    Tools & Technologies
  • ServiceNow (ITSM, Problem & Change Management)
  • Cisco WLC
  • SolarWinds
  • Cisco DNA Center
  • Cisco Firepower / ASA
  • Fortinet FortiGate Firewalls
  • SDWAN Technologies

    Required Skills
  • Strong expertise in Routing & Switching (OSPF, BGP, STP)
  • Advanced Wireless design and troubleshooting
  • Deep hands-on experience with Fortinet and Cisco firewall platforms
  • Experience supporting premium / mission-critical enterprise networks
  • Strong documentation and stakeholder management skills

  • Employment Type: FTE
  • Work Model: Fully Onsite
  • Location: Johannesburg

    Preferred Certifications
  • CCNA / CCNP (Enterprise or Security)
  • Fortinet, SDWAN Certifications (preferred)
  • ITIL Foundation
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