129 Network Infrastructure jobs in South Africa

Linux / Systems / Network Engineer (Infrastructure Platform Focus)

Location : Johannesburg working Hybrid

Type : Contract to Permanent Conversion

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 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

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 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

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

This is an opportunity to join a technically challenging project environment with the freedom to own infrastructure and influence systems from the ground up. If you're an engineer who enjoys solving deep platform-level challenges and working across Linux systems and networks, this is the role for you.

Ready to bring your expertise to a critical infrastructure transformation?

Submit your CV and join a team shaping the platform stability of a fast-evolving organization.

Principal Engineer - IT Infrastructure and Network

Job Purpose Statement

The Principal Engineer plays a pivotal role in providing technical leadership and guidance to ensure the alignment of strategies and services with the objectives of our customers, the company, and regulatory standards. This position is charged with the responsibility of overseeing high-impact, complex, time-sensitive, or critical challenges and orchestrating cross-departmental collaboration and execution to achieve successful outcomes.

As a Principal Engineer, you are entrusted with leading the development of innovative technical methods, techniques, and strategies in line with our business plans. Your industry-recognised expertise positions you as a mentor and influencer, offering guidance and knowledge transfer to technical staff within your specialised discipline.

Duties & Responsibilities

Technical Ability and Escalations

• Provide expert service delivery to clients
• Lead by example with administrative tasks such as ensuring logs are up to date and time is accounted for in systems as per the company policy
• Oversee and manage the design, development, and implementation of technical solutions
• Analyse technical challenges and develop solutions
• Research and recommend new technologies, processes, and procedures
• Proactively identifies opportunities to reuse or generalise existing services and product features
• Exposes technology and organisational needs throughout the field.
• Solves technical problems of the highest scope, complexity, and ambiguity for their customers and peers.
• Interfaces with Senior Management and enables techs to engage on department-level aspects of larger initiatives
• Looks for innovation opportunities between several teams
• Proposes initial technical implementation to support architectural changes
• Ensures company-wide goals are aligned across the technical team
• Provides a point of escalation for complex technical challenges
• Attain a measurable impact on the work of the technical team
• Interact with customers and other external stakeholders
• Exposes the work of the technical team and their business impact internally
• Knowledgeable in all specialties practiced within the company
• Provides clear and effective guidance for technical approaches to accomplish certification of designs by employing methodologies that bring the greatest overall value to the company
• Provides technical review and approval of technical designs, especially those that are of high risk or new technology
• Establishes and maintains relationships with essential internal and external technical experts to ensure technical expertise is available and program requirements are being achieved
• Develop and maintain disaster recovery and business continuity plans.
• Be aware of scope creep and ensure that work effort is aligned with quotes and services
• Be an escalation point for senior engineers (L4)
  
  

• Monitor and assess the performance of the technical team and provide feedback to Senior Management for growth and learning opportunities
• Teach, mentor, grow, and provide advice and guidance to engineers and service staff
• Provide technical leadership and mentoring of technical staff
• Partner with management and HR to assist in recruiting, hiring, training, and employee performance evaluations
• Assist with identifying new and existing talent to be introduced to the business
  
  

• Lead and manage technical projects from conception to completion as and when required
• Align with the business technical methods, approaches, and products that meet the solution requirement
• Take a leading role in projects that require thought leadership and guidance
• Ensure we are on track regarding project tasks, providing assistance where required to project managers
• Provides input and guidance during all phases of programs to solve challenging technical issues
• Strive to meet project milestones on time in accordance with the project plan
  
  

• Conduct reviews and audits of clients to ensure compliance with technical standards and client requirements
• Collaborate with internal teams to address any discrepancies or issues identified during the audit process
• Provide technical input and guidance to rectify audit findings and ensure client satisfaction
• Ensure customer technical documentation is up to date at all times and is accurate
  
  

• Maintain architect level certifications in products and vendors that align with the organisation's vision.
• Actively grow your leadership and management skillset
• Continuous development of leadership and management skills through various training interventions both through the company and personally.
  
  

• Work closely with pre-sales department and sales department ensuring constant alignment
• Communicate effectively via company communication tools (WhatsApp, Teams, CRM, Service Desk)
• Lead by example always
• Work with engineers to help them achieve their work targets
• Ensure that you are in the office 3 days a week to assist the team and lead by example.
• Be generous with your after-hours time to help your colleagues develop and learn from you
• We are aware of and manage your stress levels to ensure you have a composed and calm demeanor always
• Have a constant improvement mindset
  
  

• Achieve your billable hours-based targets
• Account for 100% of your time at the service desk
• Ensure administration is always up to date in systems
• Respond to work communications quickly and effectively
• Have a "get it done now" attitude
• Ensure sufficient diligence prior to escalation to management
• Ensure matters that are escalated are done so timeously
• Take accountability and responsibility for your role and duties
  
  

• Minimum of 10 years of experience in engineering or a related field
• Proven experience in progressively responsible technical roles, including leadership positions
• Senior experience in system design, architecture, and implementation
• Proven track record of successful project management
• Strong technical and analytical skills
• Excellent problem-solving and critical-thinking skills
• Excellent communication and interpersonal skills
• Able to work as part of a team and independently
• Knowledge of best practices and secure design principles
• Able to work effectively in stressful situations
• Open minded to personal growth and development
• A "can do now" mindset

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.

• 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

We are the tech company with people at heart. At Advania, we believe in empowering people to create sustainable value through the clever use of technology. As one of Microsoft's leading partners in the UK, specialising in Azure, Security, Dynamics 365, and Microsoft 365, we have a proven track record of success in delivering transformational IT services.

As a Network Engineer, you will serve Advania’s clients by designing and implementing network configurations, and troubleshooting performance issues on devices like firewalls, routers, and switches.

• Assisting in scoping and design where required
• Creating, updating, maintaining, and reviewing network documentation
• Creating knowledge articles within Service Now
• Managing risk and downtime during maintenance windows
• Working with internal and external stakeholders to resolve network and security tasks
• Taking ownership and performing effective incident investigation applying sound problem-solving methods to determine scope, urgency, and potential impact across a wide range of IT systems.
• Taking ownership of tasks allocated and professionally manage them through to resolution or escalation

• Experience of working in a 2nd line support level role or above
• Experience of configuring firewalls end-to-end (preferably Palo Alto, Meraki, Azure, Checkpoint, or Fortigate)
• Possess a good understanding of Routing, Including Static routing and dynamic routing (BGP and OSPF)
• Have a solid grasp of key ITSM processes, including Incident Management, Change Management, and Problem Management
• Ability to analyse and evaluate networks, identify issues and provide solutions to ensure networks are operating efficiently
• Ability to design, implement and troubleshoot Wi-Fi and security infrastructure
• Ability to communicate technical information to other technical team members but also to co-workers in other departments who may not have knowledge of networking technical terminology

The budgeted salary for this role is between 35,000 and 45,000 ZAR per month , depending on experience.

Our current hybrid working policy necessitates being in the office or at a client site 1 day per week. Each team within our organisation can decide how to implement this policy. If you have any questions after applying, please reach out to our recruitment team.

We are committed to ensuring an equitable experience for all candidates, regardless of race, religion or belief, ethnic or national origin, disability, age, citizenship, marital, domestic or civil partnership status, sexual orientation, gender identity, or any other basis as protected by applicable law.

Please do let us know if you’ll need any reasonable adjustments as part of the selection process by highlighting these on your application form.

As part of our commitment to our clients we will need to carry out background checks, including a criminal record check, for all offers of employment. If you have any unspent criminal convictions or questions about the screening process, please notify your recruiter once the application has been submitted.

• Mid-Senior level

• Full-time

• Information Technology

• IT Services and IT Consulting

Add expected salary to your profile for insights

Ocius Technology is an Australian company dedicated to developing and deploying cutting edge Uncrewed Surface Vehicles (USVs). Our vessel's harness Wind, Solar and Wave power to remain at sea collecting vital data for Defence and Civilian applications.

About the Role

The Network Engineer will work closely with CISO to continually uplift and develop our network capability to ensure continual secure and uninterrupted communication within the organisation and with our fleet of Bluebottle USVs.

The ITServices team is responsible for the Ocius’s day-to-day IT support and network capability. The team are instrumental in ensuring the wider company can function, including ensuring our Bluebottle platforms can function effectively at sea

What You'll Do

Design modern LAN and WAN networks with integrated security.

Deploy and maintain networksusing Infrastructure as Code.

Maintain legacy network infrastructure at Ocius and client locations.

Provide end-to-end network engineering support, from planning and estimating through to post-deployment assistance.

Develop and refine technical documentation for network design, deployment, and ongoing maintenance.

Attend and contribute to meetings with clients and stakeholders as required.

Maintain compliance with Ocius policies and best practices in all network-related work.

Selection Criteria

Bachelor's degree in Information Technology (or related) or equivalent TAFE qualifications with experience.

Proven experience designing and implementing complex networks, ideally using infrastructure as code.

Experience working with virtual infrastructure (cloud or on-premise).

Experience working with remote sites or unreliableconnections, including 4G/5G, satellite and mesh radio systems.

Ability to create clear and concise technical documentation for existing and new networks.

Familiarity with network security best practice, ideally in a defence setting.

If you're an excellent communicator and highly motivated to deliver high performing networks, we encourage you to apply!

Due to the nature of our business, we require Australian Citizenship for all roles and the ability to obtain and maintain an NV1 security clearance.

No recruiters please

Salary match Number of applicants Skills match

Your application will include the following questions:

Which of the following statements best describes your right to work in Australia? How many years' experience do you have as a network engineer? Do you hold Australian Security Clearance? Have you completed a qualification in ICT? Have you worked in a role where you were responsible for authoring and reviewing technical documentation? What's the highest level of Cisco collaboration certification that you have completed?

To help fast track investigation, please include here any other relevant details that prompted you to report this job ad as fraudulent / misleading / discriminatory.

Teraco Data Environments

2025/07/03 Gauteng

Job Reference Number: NE_JB1

Department: IT

Business Unit

Industry: Information Technology

Job Type: Permanent

Positions Available: 1

Salary: Market Related

The key function of this position is to be a technical support resource to support the local network for Power Monitoring, IT and Security. Part of the duties will be to travel to the outside stations on an ad hoc basis for upgrades and changes. This role must be available to work after hours and be on standby from a standby roster.

Job Description

PURPOSE OF THE ROLE

The key function of this position is to be a technical support resource to support the local network for Power Monitoring, IT and Security. Part of the duties will be to travel to the outside stations on an ad hoc basis for upgrades and changes. This role must be available to work after hours and be on standby from a standby roster. This role will also need you to be the escalation point for the Tier 1 resource.

Main Functions Of The Job

The main functions of the role are, but are not limited to:

• Remote IT Network troubleshooting and support, predominately layer 2;
• Logging and updating calls via the ticketing system;
• Interaction with other providers and service providers;
• Interactive relationship with management;
• Maintenance of Security, IT and Environmental networks on all sites;
• Maintaining Wi-Fi on all sites including monthly wi-fi health reports;
• Maintain the Network backup tool;
• Involvement in the design of the network & maintain network documentation;
• Configuring, Installing and maintenance of network switches;
• Management & implementation of Clearpass switch configurations & implementation of device configuration updates;
• Comply to all policies and procedures, including strict compliance to Teraco’s information security policies and procedures;
• Identification & escalation of information security risk, as it relates to network and other areas of responsibility;
• Incident response and management; Problem resolution within agreed timelines;
• Afterhours user support, as per the standby roster.
  
  

• Excellent interpersonal relations.
• Excellent verbal and writing skills.
• Attention to detail imperative.
• Ability to multi-task is essential.
• Able to perform under pressure.
• Ability to adapt to change.
• Open to learning and growth essential.
• Take accountability and ownership.
  
  

• Matric;
• Technical qualification /IT Diploma - CCNA/ACMA certified; CCNP advantageous;
• Minimum of 2 years’ work experience in a networking technical support role;
• Accustomed to working in a high-energy environment;
• Windows Server and Windows 10/11 experience - advantageous
• Technical competence and understanding is vital;
• Valid South African Driver’s License;
• Basic understanding of Network Security
• Excellent understanding of switching and routing and their related technologies - TCP/IP, IP Addressing, CIDR and DNS. STP, VPN technologies, OSPF, ZTNA, SDN.