Network Engineer– Level 3 (Senior / Tier 3), Plettenberg Bay

Our client in the telecommunications / wireless internet services industry is seeking to employ an experienced Network Engineer– Level 3 (Senior / Tier 3) to join their Network Operations Centre.

The successful candidate will be responsible for maintaining the stability, scalability, optimisation, and performance of the wireless and fibre network infrastructure while managing complex escalations, RF optimisation, routing, and technical mentorship across the engineering team.

This position can be based at any of the following branches: St Francis, Plettenberg Bay, Knysna, Sedgefield, George, Mossel Bay, Greyton, or Franschhoek.

Requirements

Minimum 5 years’ hands‑on experience within a Wireless ISP (WISP) environment

Minimum 2 years’ experience at senior / Tier 3 level within a live ISP network

Proven experience working within a Network Operations Centre (NOC)

Strong MikroTik RouterOS configuration, troubleshooting, and optimisation experience

Proven experience with OSPF and BGP routing protocols in production environments

Strong understanding of VLANs, bridging, firewalling, queues, tunnels, and RouterOS scripting

MTCNA certification essential

MTCRE, MTCWE, or MTCINE advantageous

Strong RF and wireless networking fundamentals

Experience with point‑to‑point and point‑to‑multipoint wireless platforms such as MikroTik, Cambium, Ubiquiti, or Mimosa

Experience with spectrum analysis, RF optimisation, alignment, and high‑site support

Strong knowledge of TCP/IP, subnetting, IPv4/IPv6, NAT, DNS, DHCP, and Layer 2 troubleshooting

Fibre networking and OLT/ONT exposure advantageous

Experience with monitoring systems such as The Dude, LibreNMS, Zabbix, PRTG, or Grafana

Scripting or automation experience advantageous

Valid South African driver’s licence and reliable transport - Essential

Strong problem‑solving, communication, leadership, and mentoring skills

Responsibilities, but not limited to: Network Operations and Escalations

Manage Tier 3 escalations from Helpdesk and NOC teams

Investigate and resolve complex routing, switching, wireless, and capacity issues

Monitor wireless and fibre network infrastructure proactively

Lead incident response and outage management processes

Participate in standby and after‑hours support rotations

RF and Wireless Infrastructure

Plan, deploy, optimise, and maintain high sites, sectors, and wireless backhaul infrastructure

Conduct RF analysis, interference mitigation, and capacity planning

Support field technicians with installations, alignments, and fault finding

Monitor network performance and optimise subscriber capacity

MikroTik and Routing

Configure and maintain MikroTik RouterOS devices across the network

Implement and troubleshoot OSPF, BGP, MPLS/VPLS, VLANs, firewall rules, queues, and tunnels

Manage backbone links and optimise routing paths for performance and stability

Documentation, Improvement and Mentorship

Maintain accurate network diagrams, IP documentation, and change records

Identify recurring network issues and implement long‑term improvements

Mentor and support Tier 1 and Tier 2 engineers

Collaborate with technical, field, sales, and support teams to ensure service delivery excellence

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