Network Engineer - ISP Core & Access Networks

Network Engineer - ISP Core & Access Networks

Johannesburg, South Africa | Posted on 03/03/2026

Responsible for the design, implementation, maintenance, and optimisation of the ISP’s core, aggregation, and access networks. The role ensures high availability, performance, scalability, and security across all network services within a service provider environment.

Key Responsibilities

• Maintain and support ISP core and access network infrastructure
• Configure and manage Layer 2 switching and VLAN environments
• Implement and support dynamic routing protocols (BGP, OSPF)
• Manage peering, transit, and upstream routing policies
• Design and maintain IP addressing plans and IP allocations
• Monitor bandwidth utilisation and plan capacity upgrades
• Troubleshoot complex network incidents
• Support client onboarding, migrations, and solution design
• Maintain accurate document...