66 Network Administration jobs in Johannesburg

Reference: JHB -DS-1
Location: Illovo, Johannesburg

A dynamic and successful ISP is looking for a Super-star Network Support Engineer to join their awesome team. Support Engineers are their professional technical resources responsible for providing first-class support to a wide range of customers, across multiple platforms. It is a busy and exciting working environment and they offer lots of growth and development.

Requirements:

• Proficiency in network routing and switching protocols (e.g., BGP, OSPF, VLANs, STP) and voice technologies such as VoIP, SIP, and unified communications.
• Strong understanding of network security principles and best practices, including firewall configuration, VPN implementation, and threat mitigation strategies.
• Hands-on experience with network and voice hardware and software from leading vendors, such as Cisco, Juniper, Avaya, Microsoft, and others.
• Excellent analytical and problem-solving skills, with the ability to troubleshoot complex network and voice issues and drive resolution to completion.
• Outstanding communication and interpersonal skills, with the ability to effectively communicate technical concepts to non-technical stakeholders and influence decision-making.
• Demonstrated leadership abilities, with a proven track record of successfully leading network and voice projects and delivering exceptional results for clients.
• Ability to work independently, manage multiple client engagements concurrently, and thrive in a dynamic, client-focused environment.
• Availability for occasional travel to client sites and participation in after-hours support and on-call rotations as needed.

Qualifications:

• Tertiary qualification: Degree/Diploma
• Relevant certifications such as CCNP (Cisco Certified Network Professional) is highly desirable
• CCVP (Cisco Certified Voice Professional), or equivalent is highly desirable

R 20 000 - R 30 000 - Monthly

Reference: JHB -HLG-3
Location: Illovo, Johannesburg

A leading ISP is looking for an experienced Snr Network/Voice Support Engineer to join their dynamic team. Support Engineers are their professional technical resources responsible for providing first-class support to a wide range of customers, across multiple platforms. It is a busy and exciting working environment, and they offer lots of growth and development.

Experience required:

• Proficiency in network routing and switching protocols (e.g., BGP, OSPF, VLANs, STP) and voice technologies such as VoIP, SIP, and unified communications.
• Strong understanding of network security principles and best practices, including firewall configuration, VPN implementation, and threat mitigation strategies.
• Hands-on experience with network and voice hardware and software from leading vendors, such as Cisco, Juniper, Avaya, Microsoft, and others.
• Excellent analytical and problem-solving skills, with the ability to troubleshoot complex network and voice issues and drive resolution to completion.
• Outstanding communication and interpersonal skills, with the ability to effectively communicate technical concepts to non-technical stakeholders and influence decision-making.
• Demonstrated leadership abilities, with a proven track record of successfully leading network and voice projects and delivering exceptional results for clients.
• Technical Support: Provide expert-level technical support and troubleshooting assistance to clients or internal teams on networking infrastructure components, including routers, switches, firewalls, and wireless access points.
• Diagnose and resolve network connectivity issues, performance problems, and security vulnerabilities promptly and efficiently.
• Analyze network traffic patterns and performance metrics to identify potential bottlenecks, anomalies, or areas for optimization.
• Collaborate with clients, network administrators, and other stakeholders to understand requirements, troubleshoot problems, and implement effective solutions.
• Availability for occasional travel to client sites and participation in after-hours support and on-call rotations as needed.

• Tertiary qualification: Degree/Diploma
• CCNP (Cisco Certified Network Professional) preferred
• CCVP (Cisco Certified Voice Professional), or equivalent preferred

R 30 000 - R 40 000 - Monthly

Overview

SUMMARY : Responsible for End-to-End Management of Network Operations & Maintenance of Microwave Transmission Equipment in a Managed Services (Client) Network Operations Center (NOC) / Global Network Operations Center (GNOC).

• Fault analysis and prevention (RCA & Problem Management), configuration, troubleshooting, field team technical support, network performance optimization (stability & quality) - upgrades on Huawei, Ericsson, AVIAT and ZTE equipment.
• Microwave commissioning, assistance for installation, hardware replacements, software upgrade.
• Measure, trace and analyze live network behavior; coordinate with other operators or the engineering department to ensure technical quality.
• All KPIs monitoring, training & development of new staff.
• Liaise with 3rd party suppliers / vendors for resolution of faults / problems needing vendor support, and with customer regarding technical queries and reporting.
• Configure and troubleshoot the QoS service, E1 routing.
• Perform testing of all the Microwave links (1+0 / 1+1 / 2+0 / 2+2 / 4+0 / 4+4 / SD / XPIC test).
• Resolve trouble tickets timeously by applying approved solutions in line with agreed timeline to implement, and escalate complex faults to the next level of support.
• Collecting PM / utilization / link information / links capacity reports, adding and removing all type of NE’s on the server.
• Develop, and ensure implementation of Operations and Maintenance (O&M) Procedures, monitoring coordination with internal processes.
• Define & prepare backup plan to prevent downtime.
• Circuit group management / links creation management and modifications.
• Review all identified and actioned Problems and Errors to verify that all steps were completed and the objective of the process was achieved.
• Identify opportunities for improvement and help to evaluate alternative solutions.
• Update and maintain data used for reporting on technical and service capabilities.
• Track and report recurring problems or failures and provide their associated consequences if there is a business impact to Customer, then Recommend solutions to address recurring problems or failures.
• Identify root cause of Incidents and recommend appropriate resolution action and other events that Customer identify as requiring Root Cause Analysis (RCA).
• Provide status report detailing the root cause and procedure for correcting recurring problems and Incidents in accordance with Customer policies.
• Provide regular updates on high priority problems in timescales agreed with the business.
• Report on Problem Management performance identifying action plans for outstanding problems.
• Capacity monitoring reports as per the WLA definitions
• Guarantee data integrity and reliability as per KPI’s and PI’s definitions
• Implement and report all technical key performance indicators and performance indicators across the technical division, ensuring a common approach regarding all technical measures.

• Degree or Diploma in Telecommunications / Computer science / Engineering
• Relevant experience in Routine Maintenance of Microwave Transmission Network in a Managed Services Network Operations Center (NOC) / Global Network Operations Center (GNOC) - International work and multi project experience.
• Knowledge and Experience with Network Domains : LTE, 2G, 3G & 5G
• Experience in troubleshooting & configuring the following hardware products:
  • Huawei (OptiX RTN - using NCE, u2000)
  • Ericson (ML6655, ML6654, ML6651, ML6352, Mini link etc - using SOME, ENM)
  • AVIAT
  • ZTE microwave systems.

24 / 7 Stand-by availability for remote support.

Excellent Reporting Experience (KPI Reporting, Capacity monitoring reports, RCA Status Reports, links capacity reports, Customer progress reports).

Main Functions:

Fault analysis and prevention, configuration, troubleshooting, performance optimization, capacity monitoring, vendor/customer liaison, and implementation of Operations & Maintenance procedures to ensure service stability, quality, and continuous improvement.

Duties and Responsibilities:

Fault Analysis and Prevention (RCA & Problem Management), Configuration, Troubleshooting, Field team Technical Support, Network performance optimization (Stability & Quality) - element upgrades on Huawei, Ericsson, AVIAT and ZTE equipment.

Microwave commissioning, remote assistance for installation, hardware replacements, software upgrade.

Measure, trace and analyze the live network behavior, coordinate and collaborate with other operators or the engineering department to ensure technical quality.

All KPIs Monitoring, Training & Development of new staff.

Laise with 3rd Party Suppliers / Vendors for resolution of the Faults / Problems needing vendor support, and with Customer regarding technical queries and reporting.

Configure and troubleshoot the QoS service, E1 routing

Perform testing all the Microwave links (1+0/1+1/2+0/2+2/4+0/4+4/SD/XPIC test)

Resolve trouble tickets timeously by Applying approved solutions in line with agreed timeline to implement, and escalate complex faults to the next level of support.

Collecting PM/Utilization/link information/links capacity reports, adding and removing all type of NEs on the server.

Develop, and ensure implementation of Operations and Maintenance (O&M) Procedures, monitoring Coordination with internal Processes.

Define & prepare Backup plan to prevent downtime.

Circuit group management / links creation management and modifications.

Review all identified and actioned Problems and Errors to verify that all steps were completed and the objective of the process was achieved.

Identify opportunities for improvement and help to evaluate alternative solutions.

Update and maintain data used for reporting on technical and service capabilities.

Track and report recurring problems or failures and provide their associated consequences if there is a business impact to Customer, then Recommend solutions to address recurring problems or failures.

Identify root cause of Incidents and recommend appropriate resolution action and other events that Customer identify as requiring Root Cause Analysis (RCA).

Provide status report detailing the root cause and procedure for correcting recurring problems and Incidents in accordance with Customer policies.

Provide regular updates on high priority problems in timescales agreed with the business.

Report on Problem Management performance identifying action plans for outstanding problems.

Capacity monitoring reports as per the WLA definitions

Guarantee data integrity and reliability as per KPIs and PIs definitions

Implement and report all technical key performance indicators and performance indicators across the technical division, ensuring a common approach regarding all technical measures.

Requirements:

Degree or Diploma in Telecommunications / Computer science / Engineering

Relevant experience in Routine Maintenance of Microwave Transmission Network in a Managed Services Network Operations Center (NOC ) / Global Network Operations Center (GNOC ) - International work and multi project experience.

Knowledge and Experience with Network Domains: LTE, 2G, 3G & 5G

Experience in troubleshooting & configuring the following hardware products;

- Huawei (OptiX RTN - using NCE, u2000)

- Ericson (ML6655, ML6654, ML6651, ML6352, Mini link etc - using SOME, ENM)

- AVIAT

- ZTE microwave systems.

24/7 Stand-by availability for remote support.

Excellent Reporting Experience (KPI Reporting, Capacity monitoring reports, RCA Status Reports, links capacity reports, Customer progress reports).

Installing, troubleshooting, and fixing desktops, printers, laptops, and other computer peripherals hardware problems, as well as desktop applications.

• Basic knowledge of enterprise LAN and WAN setups and concepts. Ability to perform smart hand activities under instructions at sites and remotely.
• Ability to lift/move computer equipment weighing up to 50 lbs.
• Expertise in desk-side support and PC repair, including basic administration of Windows OS and Mac OS.
• Knowledge of TCP/IP networking, DNS, DHCP, VPN, and RDP.
• Support for peripheral and networking hardware such as monitors, keyboards, mice, printers, fax machines, scanners, routers, switches, firewalls, racks, and data panels under 'Smart Hands' capability.
• Strong troubleshooting skills for systems and network issues, including end-user network cabling.
• Advanced knowledge of computer hardware, chipsets, memory modules, and peripherals.
• Familiarity with operating systems, software applications, and remote connection tools: MS Windows, MS Office 365, Active Directory, SCCM, DHCP, VPN.

• Excellent communication skills, both written and oral, with clients and management.
• Ability to meet deadlines, take proactive ownership, and work with urgency.
• Bilingual in English and local language (B2 level).

• Console cable for Cisco and Silver Peak devices.
• Internet-ready mobile device.
• Remote support tools: TeamViewer, MS Teams, Putty, remote connection software.
• Admin access to laptops.
• RJ45 port on laptops.
• Experience with ticketing tools such as ServiceNow or Remedy is an advantage.

• Provide break/fix support, fault diagnosis, and resolution for core operating systems and platforms.
• Support and resolve desktop faults for approved applications.
• Work with third-party vendors on complex AV issues.
• Maintain communication and ticket updates for incidents.
• Install, upgrade, and troubleshoot Windows 10, 11, and Mac OS systems, including Microsoft Office and authorized desktop applications.
• Support Apple Mac users with basic OS knowledge.
• Support printers and hardware, perform preventative maintenance, and remedial repairs.
• Use diagnostic tools for network and hardware/software troubleshooting.
• Possess broad IT knowledge, including networks, servers, AV, smart devices, and telecoms.
• Ability to work in a project-based environment with flexibility and teamwork.
• Minimum 1-3 years of IT support experience, with at least 18 months in Windows desktop support.

What You’ll Be Doing

• Deploy and manage Cisco ACI fabrics, including APIC, leaf, and spine configurations
• Design and implement policies, EPGs, bridge domains, and contracts
• Troubleshoot network issues across L2/L3 and VXLAN overlays
• Collaborate with cross-functional teams to support application-centric deployments
• Maintain documentation and contribute to automation efforts using Python, Ansible, or similar tools
• Stay current with ACI best practices and evolving technologies

• 3–5 years of hands-on networking experience
• Solid understanding of Cisco ACI architecture and components
• Strong grasp of VLANs, VRFs, routing protocols (BGP, OSPF), and VXLAN
• Familiarity with virtualization platforms (VMware, OpenStack) and cloud integrations is a plus
• Experience with network automation and scripting is highly desirable

• Mid-Senior level

• Full-time

• Information Technology

• IT Services and IT Consulting