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 documentation and follow change management processes Participate in after-hours standby and emergency support Requirements Qualifications Grade 12 Certifications Security+ (advantageous) Valid Driver’s License Experience 5+ years in an ISP or service provider environment Strong hands‑on experience with switching, routing, IP networking, and bandwidth management Advanced knowledge of Layer 2 & Layer 3 networking Strong troubleshooting and analytical skills #J-18808-Ljbffr
Network Engineer - Isp Core & Access Networks
SABENZA IT & RECRUITMENT
johannesburg, johannesburg
Published 14 days ago
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