Senior Network Engineer Level 3
Rosstone Professional Solutions
Pretoria, Gauteng
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Posted 02 December 2025

Job Details

Job Description

Level 3 Engineer

Location: Client’s campus – Pretoria
Duration: 12 months contract – possibility of extension

Purpose:
  • Provide expert-level technical support by diagnosing and resolving complex escalated issues that Level 1 and 2 supports cannot solve.
  • Work with Level 1 and 2 support to understand escalated problems and, when necessary, escalate issues to Level 4 support or product development teams.
  • Provide technical guidance, training, and mentorship to junior support engineers.
  • Full responsibility to support resources with verification by the L3 during the bi-monthly site visit.
  • Enterprise and Public Sector experience is key

Supported Infrastructure
  • Cisco Unified Communication Manager (CUCM)
  • Cisco Unified Contact Centre Express (UCCX)
  • Cube Gateways
  • Attendance Console
  • Phones and Headsets
  • LAN Switches (Core, Service, Access, and Optics)
  • WAN Routers
  • Access Points
  • ISE
  • DNA Centre
  • Telephony Management System (TMS)

Pre-requisite skills:
  • Strong understanding of routing protocol operation, including both interior and exterior routing protocol operation
  • Implementation of Enterprise LAN networks
  • Basic understanding of Enterprise routing and wireless connectivity
  • Basic understanding of Python scripting"
  • Working knowledge of fundamental terms of computer networking, including LANs, WANs, switching, and routing
  • Basics of digital interfaces, Public Switched Telephone Networks (PSTNs), and Voice over IP (VoIP)
  • Fundamental knowledge of converged voice and data networks and Cisco Unified Communications Manager deployment
  • Knowledge of Software-Defined Networking (SDN) concepts as applied to large scale live network deployments
  • Strong understanding of enterprise WAN design
  • Familiarity with Microsoft Windows operating systems
  • Familiarity with Transport Layer Security (TLS) and IP Security (IPsec)
  • Familiarity with the Cisco IOS® Software Command-Line Interface (CLI) for wired and wireless devices
  • Familiarity with Cisco AnyConnect® Secure Mobility Client
  • Familiarity with Microsoft Windows operating systems