64 Network Infrastructure jobs in Johannesburg
Linux / Systems / Network Engineer (Infrastructure Platform Focus)
Johannesburg, Gauteng
DeARX Services Ltd
Posted 2 days ago
Job Viewed
Job Description
Job title: Linux / Systems / Network Engineer (Infrastructure Platform Focus)
Job Location: Gauteng, Johannesburg
Deadline: September 06, 2025
OverviewAbout the Opportunity
We are looking for an experienced Linux / Systems / Network Engineer to join a growing infrastructure team at a leading organization undergoing a major technology transformation.
As the company modernizes its on-premise infrastructure and prepares for a hybrid future, you'll play a critical role in building, supporting, and maintaining stable and secure systems. This is not a cloud-native DevOps role its hands-on, infrastructure-focused, and highly technical, ideal for engineers who thrive working at the systems and networking layer of enterprise environments.
Key Responsibilities- Provision and configure VMware virtual machines to support evolving infrastructure needs
- Install, configure, and maintain Linux-based systems (e.g., RHEL, Ubuntu, CentOS)
- Support systems across multiple environments (development, staging, production)
- Configure and manage critical network services and components, including :
- DNS servers and records
- TLS / SSL certificates
- Load balancers (front-end / back-end rules)
- Firewall and routing rules
- Troubleshoot and optimize system and network performance
- Assist in the integration of APIs for internal systems and services
- Implement and support security protocols in line with compliance requirements
- Collaborate with the Infrastructure / IS Operations Manager to ensure system reliability and business continuity
- Create and maintain clear documentation of systems, processes, and configuration standards
- 5-10 years in roles such as Linux Systems Engineer, Infrastructure Engineer, or Systems Administrator
- Strong command of Linux operating systems :
- Systemd, kernel tuning, package management, file systems
- Solid understanding and hands-on experience with enterprise networking :
- DNS, SSL / TLS, load balancers, routing and firewall configuration
- Experience working in on-prem or hybrid environments
- Strong Bash or Python scripting for automation and maintenance
- Skilled in system-level monitoring, log analysis, and performance tuning
- Familiarity with VMware virtualization
- Exposure to DevOps or infrastructure-as-code tools (e.g., Ansible, Terraform, Git, Jenkins)
- Experience with hybrid cloud setups (e.g., AWS, Azure), though not core to the role
- Understanding of security tools and practices, such as multi-factor authentication, data encryption, etc.
- Previous experience supporting IS Operations or enterprise platforms
- A self-starter who takes ownership of systems and delivers results independently
- A problem-solver who thrives in lean teams with hands-on responsibilities
- Someone who values clarity and documentation
- A strong communicator who collaborates well with both technical and non-technical stakeholders
- ICT jobs
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0
Linux / systems / network engineer (infrastructure platform focus)
Johannesburg, Gauteng
DeARX Services Ltd
Posted today
Job Viewed
Job Description
Job title: Linux / Systems / Network Engineer (Infrastructure Platform Focus) Job Location: Gauteng, Johannesburg Deadline: September 06, 2025 Overview About the Opportunity We are looking for an experienced Linux / Systems / Network Engineer to join a growing infrastructure team at a leading organization undergoing a major technology transformation. As the company modernizes its on-premise infrastructure and prepares for a hybrid future, you'll play a critical role in building, supporting, and maintaining stable and secure systems. This is not a cloud-native Dev Ops role its hands-on, infrastructure-focused, and highly technical, ideal for engineers who thrive working at the systems and networking layer of enterprise environments. Key Responsibilities Provision and configure VMware virtual machines to support evolving infrastructure needs Install, configure, and maintain Linux-based systems (e.g., RHEL, Ubuntu, Cent OS) Support systems across multiple environments (development, staging, production) Configure and manage critical network services and components, including : DNS servers and records TLS / SSL certificates Load balancers (front-end / back-end rules) Firewall and routing rules Troubleshoot and optimize system and network performance Assist in the integration of APIs for internal systems and services Implement and support security protocols in line with compliance requirements Collaborate with the Infrastructure / IS Operations Manager to ensure system reliability and business continuity Create and maintain clear documentation of systems, processes, and configuration standards Must-Have Skills & Experience 5-10 years in roles such as Linux Systems Engineer, Infrastructure Engineer, or Systems Administrator Strong command of Linux operating systems : Systemd, kernel tuning, package management, file systems Solid understanding and hands-on experience with enterprise networking : DNS, SSL / TLS, load balancers, routing and firewall configuration Experience working in on-prem or hybrid environments Strong Bash or Python scripting for automation and maintenance Skilled in system-level monitoring, log analysis, and performance tuning Familiarity with VMware virtualization Nice-to-Have Exposure to Dev Ops or infrastructure-as-code tools (e.g., Ansible, Terraform, Git, Jenkins) Experience with hybrid cloud setups (e.g., AWS, Azure), though not core to the role Understanding of security tools and practices, such as multi-factor authentication, data encryption, etc. Previous experience supporting IS Operations or enterprise platforms What Were Looking For A self-starter who takes ownership of systems and delivers results independently A problem-solver who thrives in lean teams with hands-on responsibilities Someone who values clarity and documentation A strong communicator who collaborates well with both technical and non-technical stakeholders ICT jobs #J-18808-Ljbffr
This advertiser has chosen not to accept applicants from your region.
1
Network Engineer
Johannesburg, Gauteng
Data Centrix
Posted 2 days ago
Job Viewed
Job Description
This advertiser has chosen not to accept applicants from your region.
2
Network Engineer
Johannesburg, Gauteng
Penta Consulting
Posted 2 days ago
Job Viewed
Job Description
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
This advertiser has chosen not to accept applicants from your region.
3
Network Engineer
Randburg, Gauteng
Network IT
Posted 3 days ago
Job Viewed
Job Description
Network Engineer
Reference: NWA -Njabu-3
If you are an experienced Network Engineer who wants to make a difference in a continuously growing company, then APPLY NOW!
The Network Engineer role is responsible for designing, building, maintaining, and documenting the network security infrastructure.
Job Experience & Skills Required:- Relevant IT Networking and Security Certifications, plus appropriate Diploma
- Experience and product-specific training
- 5 Years’ experience
- Willing to work extended hours/shifts
- Willing to travel
- ITIL or Networking certificates (advantageous)
- Administration of Firewalls, Routers, Switches, Intrusion Prevention Systems, Intrusion Detection Systems, Network Access Control (NAC), and Virtual Private Networks (VPN)
If you are interested in this opportunity, please apply directly. If you wish to send your CV via email, forward your CV to and copy the reference number in the subject line of your e-mail.
If you have not had any response in two weeks, please consider the vacancy application unsuccessful. Your profile will be kept on our database for any other opportunities that appear for which you might be more suitable.
For more information contact:
Njabulo Ndzimande on
IT Recruitment Consultant
This advertiser has chosen not to accept applicants from your region.
4
Network Engineer
Johannesburg, Gauteng
Dananda Talent
Posted 14 days ago
Job Viewed
Job Description
Key Responsibilities:
· Assist in the configuration, monitoring, and troubleshooting of LAN, WAN, WLAN, and VPN networks.
· Support installation and maintenance of network hardware such as routers, switches, firewalls, and access points.
· Monitor network performance, identify bottlenecks, and provide timely resolutions.
· Ensure network security by applying best practices, updates, and patches.
· Provide Level 1 and Level 2 support for network-related incidents.
· Assist in network documentation, including topology diagrams and configuration records.
· Coordinate with vendors and service providers for network-related issues.
· Participate in implementation of new network solutions and upgrades.
· Support IT team in day-to-day tasks related to infrastructure.
Required Skills & Qualifications:
· Bachelors degree in Computer Science, Information Technology, or related field (or equivalent experience).
· 1.52 years of hands-on experience in networking roles.
· Strong understanding of TCP/IP, DNS, DHCP, VLANs, and routing protocols.
· Basic experience with Cisco or similar networking equipment.
· Familiarity with firewalls and network security principles.
· Knowledge of network monitoring tools (e.g., PRTG, SolarWinds, Nagios).
· Good troubleshooting and analytical skills.
· Strong communication and teamwork abilities.
Preferred Qualifications (Good to Have):
· CCNA / CompTIA Network+ or equivalent certification.
· Exposure to cloud networking (AWS, Azure).
· Knowledge of VoIP systems (e.g., 3CX, Cisco Call Manager
· Assist in the configuration, monitoring, and troubleshooting of LAN, WAN, WLAN, and VPN networks.
· Support installation and maintenance of network hardware such as routers, switches, firewalls, and access points.
· Monitor network performance, identify bottlenecks, and provide timely resolutions.
· Ensure network security by applying best practices, updates, and patches.
· Provide Level 1 and Level 2 support for network-related incidents.
· Assist in network documentation, including topology diagrams and configuration records.
· Coordinate with vendors and service providers for network-related issues.
· Participate in implementation of new network solutions and upgrades.
· Support IT team in day-to-day tasks related to infrastructure.
Required Skills & Qualifications:
· Bachelors degree in Computer Science, Information Technology, or related field (or equivalent experience).
· 1.52 years of hands-on experience in networking roles.
· Strong understanding of TCP/IP, DNS, DHCP, VLANs, and routing protocols.
· Basic experience with Cisco or similar networking equipment.
· Familiarity with firewalls and network security principles.
· Knowledge of network monitoring tools (e.g., PRTG, SolarWinds, Nagios).
· Good troubleshooting and analytical skills.
· Strong communication and teamwork abilities.
Preferred Qualifications (Good to Have):
· CCNA / CompTIA Network+ or equivalent certification.
· Exposure to cloud networking (AWS, Azure).
· Knowledge of VoIP systems (e.g., 3CX, Cisco Call Manager
This advertiser has chosen not to accept applicants from your region.
5
Network Engineer
Johannesburg, Gauteng
Data Centrix
Posted 20 days ago
Job Viewed
Job Description
- Review client requirements and collaborate with other IT engineers to define the optimal networking and firewalling solutions in accordance with organisational policies.
- Design and implement new network solutions and/or improve the efficiency of current networks.
- Configure firewalls for usage, manage their day-to-day operations and perform regular maintenance through upgrades and patches to ensure optimal performance, maximise network efficiency and security.
- Configure, manage and maintain secure intra- and inter-organisational communication channels, such as VPNs and IPSec tunnels.
- Perform quarterly firewall health checks removing unnecessary rules, interfaces, etc. and optimising rules where possible.
- Assist with the installation, configuration and support of network equipment across the LAN, WLAN, WAN and SD-WAN, both wired and wireless.
- Participate in cross-functional troubleshooting support for internal and external clients and network fault investigations.
- Liaise with network service providers and vendors, ensuring service level agreements are met and organisational policies and principles adhered to.
- Maximise network performance through ongoing monitoring and optimisation.
- Ensure supporting documentation and diagrams remain up to date.
- Ensure all network equipment is sufficiently secured (logically and physically), so that no unauthorised access can be gained.
- Provide monthly reporting as required.
- Maintain Network Monitoring Tools
- Configure, Manage and Support Network Access Control (NAC) Systems
This advertiser has chosen not to accept applicants from your region.
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6
Network engineer
Johannesburg, Gauteng
Dananda Talent
Posted today
Job Viewed
Job Description
Key Responsibilities:· Assist in the configuration, monitoring, and troubleshooting of LAN, WAN, WLAN, and VPN networks.· Support installation and maintenance of network hardware such as routers, switches, firewalls, and access points.· Monitor network performance, identify bottlenecks, and provide timely resolutions.· Ensure network security by applying best practices, updates, and patches.· Provide Level 1 and Level 2 support for network-related incidents.· Assist in network documentation, including topology diagrams and configuration records.· Coordinate with vendors and service providers for network-related issues.· Participate in implementation of new network solutions and upgrades.· Support IT team in day-to-day tasks related to infrastructure. Required Skills & Qualifications:· Bachelors degree in Computer Science, Information Technology, or related field (or equivalent experience).· 1.52 years of hands-on experience in networking roles.· Strong understanding of TCP/IP, DNS, DHCP, VLANs, and routing protocols.· Basic experience with Cisco or similar networking equipment.· Familiarity with firewalls and network security principles.· Knowledge of network monitoring tools (e.g., PRTG, Solar Winds, Nagios).· Good troubleshooting and analytical skills.· Strong communication and teamwork abilities. Preferred Qualifications (Good to Have):· CCNA / Comp TIA Network+ or equivalent certification.· Exposure to cloud networking (AWS, Azure).· Knowledge of Vo IP systems (e.g., 3 CX, Cisco Call Manager
This advertiser has chosen not to accept applicants from your region.
7
Network engineer
Johannesburg, Gauteng
Data Centrix
Posted today
Job Viewed
Job Description
Review client requirements and collaborate with other IT engineers to define the optimal networking and firewalling solutions in accordance with organisational policies. Design and implement new network solutions and / or improve the efficiency of current networks. Configure firewalls for usage, manage their day-to-day operations and perform regular maintenance through upgrades and patches to ensure optimal performance, maximise network efficiency and security. Configure, manage and maintain secure intra- and inter-organisational communication channels, such as VPNs and IPSec tunnels. Perform quarterly firewall health checks removing unnecessary rules, interfaces, etc. and optimising rules where possible. Assist with the installation, configuration and support of network equipment across the LAN, WLAN, WAN and SD-WAN, both wired and wireless. Participate in cross-functional troubleshooting support for internal and external clients and network fault investigations. Liaise with network service providers and vendors, ensuring service level agreements are met and organisational policies and principles adhered to. Maximise network performance through ongoing monitoring and optimisation. Ensure supporting documentation and diagrams remain up to date. Ensure all network equipment is sufficiently secured (logically and physically), so that no unauthorised access can be gained. Provide monthly reporting as required. Maintain Network Monitoring Tools Configure, Manage and Support Network Access Control (NAC) Systems #J-18808-Ljbffr
This advertiser has chosen not to accept applicants from your region.
8
Network engineer
Randburg, Gauteng
Network IT
Posted today
Job Viewed
Job Description
Network Engineer Reference: NWA -Njabu-3 If you are an experienced Network Engineer who wants to make a difference in a continuously growing company, then APPLY NOW! Duties & Responsibilities The Network Engineer role is responsible for designing, building, maintaining, and documenting the network security infrastructure. Job Experience & Skills Required: Relevant IT Networking and Security Certifications, plus appropriate Diploma Experience and product-specific training 5 Years’ experience Willing to work extended hours/shifts Willing to travel ITIL or Networking certificates (advantageous) Administration of Firewalls, Routers, Switches, Intrusion Prevention Systems, Intrusion Detection Systems, Network Access Control (NAC), and Virtual Private Networks (VPN) If you are interested in this opportunity, please apply directly. If you wish to send your CV via email, forward your CV to and copy the reference number in the subject line of your e-mail. If you have not had any response in two weeks, please consider the vacancy application unsuccessful. Your profile will be kept on our database for any other opportunities that appear for which you might be more suitable. For more information contact:Njabulo Ndzimande on IT Recruitment Consultant #J-18808-Ljbffr
This advertiser has chosen not to accept applicants from your region.
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