20 Network Administrator jobs in Johannesburg

Join to apply for the Systems Network Administrator role at DataOrbis

ATG is looking for a Systems Network Administrator to ensure the stability, performance and security of our networks. The role includes monitoring systems, troubleshooting issues, and implementing improvements to meet evolving business needs and technology standards.

Join us and play a key role in keeping our systems reliable, secure, and future-ready.

• Delivers high quality service to both internal & external clients
• Ensures customer satisfaction levels are met
• Ensure that LAN connectivity is installed and working correctly at all times
• Ensure that all floor network termination points and Network cabinets are kept in a strict neat orderly fashion
• Maintains and support the network (LAN) and desktop connectivity
• Install and maintain all ICT hardware and Software
• Ensure that all cables are labelled correctly at both ends
• Setup e-mail and support as per client request
• Setup internet access as per Manager request for internal staff
• Install and update Anti-Virus software on all desktops
• Assist in the configuration, monitoring, and maintenance of network equipment (e.g., routers, switches, firewalls)
• Management reports of access control as per request
• Maintain documentation related to network configurations, procedures, and troubleshooting step

• Entry level

• Full-time

• Information Technology

• IT Services and IT Consulting

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Argility (ATG) is part of the Smollan Data and Tech Cluster. ATG is a group of South African technology businesses that utilise software and technology to digitise processes, improve efficiencies and create a competitive edge for our customers and partners. We are software specialists who solve complex business problems by supplying and supporting various software solutions such as big data analytics, IoT asset management, retail and supply chain solutions, fleet management software and more. Decades-long customer relationships bear testament to our customer-centric culture, exceptional service and innovative thinking. We strive to become an extension of our customers’ businesses and not just another solution provider. We continue to reinvent and digitally transform organisations and ourselves, on our journey to automate and digitise using machine learning, AI and the internet of things.

ATG, DataOrbis, Smollan and Mediametrics are proudly part of the Smollan Data and Tech Cluster.

Role : Systems Network Administrator to ensure the stability, performance and security of our networks. The role includes monitoring systems, troubleshooting issues, and implementing improvements to meet evolving business needs and technology standards. Join us and play a key role in keeping our systems reliable, secure, and future-ready.

• Delivers high quality service to both internal & external clients
• Ensures customer satisfaction levels are met
• Ensure that LAN connectivity is installed and working correctly at all times
• Ensure that all floor network termination points and Network cabinets are kept in a strict neat orderly fashion
• Maintains and support the network (LAN) and desktop connectivity
• Install and maintain all ICT hardware and Software
• Ensure that all cables are labelled correctly at both ends
• Setup e-mail and support as per client request
• Setup internet access as per Manager request for internal staff
• Install and update Anti-Virus software on all desktops
• Assist in the configuration, monitoring, and maintenance of network equipment (e.g., routers, switches, firewalls)
• Management reports of access control as per request
• Maintain documentation related to network configurations, procedures, and troubleshooting steps

• Diploma or Degree in Information Technology, Computer Science, or a related
• 2 - 3 years of experience in a technical support or network administration role

• Understanding of Argility admin requirements and system solutions
• Windows Server 2008 and later
• MS SQL 2005 and later
• Web services
• Basic Java knowledge
• Scripting knowledge
• Understanding of Microsoft and/or Linux environment
• Understanding of the client’s core business culture and needs
• Knowledge of system/industry best practice
• Understanding of the systems architecture and the Argility standards
• Knowledge of software development methodologies
• Understanding of Quality Management

• Initiative and willingness to learn
• Teamwork and collaboration
• Accountability
• Time Management
• Analytical thinking

• Reliable and Responsible
• Curious and Eager to Learn
• Calm Under Pressure
• Strong Work Ethic
• Service-Oriented Mindset
• Integrity and Confidentiality
• Approachable
• Flexible / Adaptable
• Team Player

• Mid-Senior level

• Full-time

• Information Technology

• IT Services and IT Consulting

Location: City of Johannesburg, Gauteng, South Africa

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SUMMARY:

Secure and maintain the organisation’s computer systems network. Maintain a reliable, secure and efficient data communications network.

Recruiter:

Recru-it

Job Ref:

PE /Tabz

Date posted:

Tuesday, June 24, 2025

Location:

Johannesburg, South Africa

Salary:

1000 Annually

SUMMARY:

Secure and maintain the organisation’s computer systems network. Maintain a reliable, secure and efficient data communications network.

POSITION INFO:

Key Performance Areas

• Plan and Set Up Network Infrastructure
• Maintain High Availability Network Infrastructure
• Conduct Research on Latest Networking Practices
• Perform General Administrative Functions
• Undertake Extraneous-to-IT Activities.
  
  

• Specify network requirements and design solutions
• Implement, configure and maintain LAN
• Implement, configure and maintain WAN
• Define and allocate IP addresses
• Plan and report on network capacity within the company
• Negotiate and provide reciprocal network support and access between the company and third-party vendors
  
  

• Set up user accounts, permissions and passwords
• Install and configure network equipment to update/fix hardware/software issues
• Install and integrate new server hardware and applications
• Support and administer third-party applications (Network and Firewall applications)
• Maintain computer networks and systems including software, Virtual hosts, VPNs, routers
• and other physical hardware
• Tune network performance
• Check for and respond to network security and connectivity alerts and incidents
• Monitor network performance (availability, utilization, throughput and latency) and test for
• weaknesses
• Update virus protection software to keep data and communications protected
• Diagnose and identify root causes of network and security issues.
• Research and resolve network performance issues in a timely manner
• Provide accurate solutions to problems escalated from the 1st line support team
• Provide remote infrastructure support/troubleshooting within agreed SLAs
• Monitor and respond to new capacity threshold alerts
  
  

• Identify and review appropriate software updates, patches and firmware releases
• Research and make network recommendations on server system operations
• Research and review networking best practices and applications
  
  

• Define network policies and procedures
• Communicate networking issues to other IT Teams, Supervisors and management
• Resolve software and hardware configuration issues for users
• Track system’s end of life and specify replacements when needed.
• Document existing systems and formulate comprehensive plans for the implementation of new systems
• Establish and maintain a good working relationship with customers
  
  

• Undertake Generator operational checks per prescribed checklist(s)
• Check that OEM generator suppliers’ maintenance regimes are completed per SLA
• Undertake UPS operational/functionality checks per prescribed checklist(s)
• Check that OEM UPS suppliers’ maintenance regimes are completed per SLA
• Process “first point of contact” calls for generator and systems issues and/or failures
• Retrieve camera footage for managers’/supervisors’ review
• Install and maintain camera hardware and cabling
• Conduct solar system operational checks
• Perform basic solar system maintenance (replace fuses, etc.)
• Trouble shoot and resolve office electrical issues
  
  

• Matric
• A+ Certificate
• N+ Certificate
• Linux LPIC-1
• BSc degree in Computer Science or related field,
• An equivalent certification at NQF Level 7 (e.g. Cisco Certified Network Associate (CCNA), Aruba Certified Switching Associate (ACSA), FortiGate)
• MCSE
• MCIPT
  
  

• Proven experience in a network administrator role
• Verifiable experience in the design and implementation of routing and switching large scale, multi-vendor networks (Aruba, Cisco).
• Direct experience in Network Security (e.g. Sophos, FortiGate)
• Applied experience with Aruba routing and switches
• Practical experience with wireless networks
• Relevant experience with firewalls, Internet VPNs remote implementation, troubleshooting, and problem resolution
• Hands on experience in Windows server , hyper v, Designing and Implementing a Server
• Practicable experience with Infrastructure, Linux Server, Microsoft Systems
• Working experience with VMware.
  
  

• Solid familiarity with backup and recovery software and methodologies
• Intense knowledge of internet protocols, services and standards.
• Solid understanding of network automation, telemetry, and SDN (Software Defined Networking)
• Knowledgeable in network security standards, best practices, and implementation of them to
• operating procedures and configurations.
• Strong understanding of physical cabling
• Practicable knowledge of best practices around management, control, and monitoring of server infrastructure
• Exceptional written and verbal communication skills
• Excellent problem-solving skills
• Exceptional organising skills
• Ability to diagnose and resolve product, hardware and performance issues independently
• Ability to set up and configure server hardware
• Strong scripting skills
• Robust ability to configure and maintain networking stacks
  
  

• Attention to detail/accuracy
• Able to work in a team and independently
• Deadline conscious
• Calm under pressure
• Responsible and accountable
• Self-motivated
• Flexible
• Honest, Hardworking and Humble
  
  
  
  

• Seniority level Mid-Senior level

• Employment type Full-time

• Job function Information Technology
• Industries Advertising Services

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Get notified about new Network Administrator jobs in Johannesburg, Gauteng, South Africa .

Johannesburg, Gauteng, South Africa 1 week ago

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A leading cash management company based in Houghton is urgently looking for a Network Administrator to assist with support, maintenance, implementation, and optimisation of networks across the business operating systems, ensuring stable and secure connectivity across all network hardware, software, and communication links.

In order to be considered, the following is required:

• Degree in Computer Science, Management Information Systems, or related field
• Microsoft Office Suite
• Customer Service
• Practices and methods of systems administration and maintenance
• Scripting, Network Security
• Proficient at administering common network services
• Familiar with common programming languages
• Good written and verbal communication skills
• Computer networking and communication tools
• Knowledge of IT project management principles (e.g., Agile)
• Understanding of Software Development Life Cycle (SDLC)
• 3 years of experience as a Network Administrator for a medium to large enterprise with complex technology environments
• 1 year of experience in operating networks in the cloud, on-premises, and a hybrid environment
• 2 years of experience working with network and routing protocols, switch configuration/programming
• Operational knowledge of major server operating systems
• Operational knowledge of computer networking and cabling infrastructure
• Ability to troubleshoot and perform routine maintenance on servers, computers, and peripheral equipment

• Support Analysis and Design Activities
• Technical implementation in own area
• Quality Management
• Risk Management
• Customer Management
• Effective teamwork and self-management

If you would like to email your CV directly, please send it to or contact .

Please consider your application as unsuccessful if you have not received a response within 14 days of submitting your application. However, please keep a lookout on our website, , for available positions which you may be suited for.

Plus Medical Aid, Pension, Risk Benefits, Disability, Funeral Cover, 13th Cheque for non-management roles.

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 -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