141 Network Administration jobs in South Africa

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

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).

Qualifications / Certifications :

• Microsoft Certifications (MCSE / MCP) (Preferred)
• CCNA (Cisco Certified Network Associate) OR CCNP (Cisco Certified Network Professional)
• ITIL Certification / Cisco Firepower
• Valid driver's license with own transport

Technical Competencies

• 3-5 years experience in 3rd level Support, Service Desk, and/or networking.
• Proficient in Microsoft Server environments and Active Directory administration.
• Strong skills & expertise in Microsoft 365, Azure, SharePoint, OneDrive, and Intune.
• Experience with virtualization technologies (Hyper-V, VMware).
• Advanced networking, VLAN management, and Cisco security solutions (including Cisco Firepower).
• PowerShell scripting for automation and administration.
• Experience with disaster recovery planning and execution.
• Advanced troubleshooting across server, network, virtualization, and cloud platforms.
• Strong networking and security expertise, including VLAN management and Cisco Firepower.
• Skilled in designing and improving Microsoft Server and cloud infrastructure.
• Ability to mentor team members and lead complex projects.

Responsibilities :

• Provide advanced technical support across hardware, software, networking, and cloud systems as the primary escalation point beyond 2nd Line Support.
• Own complex incidents end-to-end, including diagnosis, resolution, root cause analysis, and documentation, ensuring issues are resolved within SLA and recurrence is prevented.
• Act as a technical leader, coaching and mentoring 1st and 2nd Line Analysts to build their capability and confidence.
• Design, implement, and maintain network and server infrastructure to support business requirements, scalability, and security standards.
• Review, monitor, and improve system security, proactively identifying and addressing vulnerabilities, and recommending enhancements to reduce risk.
• Plan, coordinate, and deliver IT projects, including infrastructure upgrades, migrations, new deployments, and system integrations.
• Develop and maintain comprehensive technical documentation, configuration records, and knowledge base articles to support effective operations and knowledge sharing.
• Lead proactive monitoring, capacity planning, and performance tuning activities to maintain system health and optimise service delivery.
• Collaborate with infrastructure teams, third-party vendors, and other stakeholders to resolve complex technical issues and deliver continuous improvement.
• Ensure compliance with all security policies, data protection regulations, and operational standards in all areas of responsibility.
• Participate in disaster recovery planning, testing, and execution to ensure business continuity.