TRAFFIC
Gauteng
Network Engineer - ISP Core & Access Networks
Sabenza IT & Recruitment
Job Description
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
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
About This Role
Career insights for Network and Computer Systems Administrators positions
Salary Benchmark
R32,386/month
R24,341 to
R44,079/month
Source: WageIndicator ZAR data
Key Skills for This Role
Critical Thinking
Judgment and Decision Making
Reading Comprehension
Systems Analysis
Active Listening
Common Technologies
Apache Tomcat 10
Django 4.2
ASP.NET Core 7.0
Amazon EC2
Blackboard Learn Ultra
ServiceNow Platform
Nagios XI
Foglight Solutions
Network and Computer Systems Administrators Insights
Median Salary (ZAR)
R32,386/month