88 Network Engineer Positions jobs in South Africa

Bachelors degree /Diploma or equivalent experience

3+ years of IT experience

1+ years of hands-on web application penetration testing / ethical hacking experience

The Purpose of Your Role

Lead testing efforts on web and mobile applications and supporting systems.

Replicate the actual techniques and tools used by malicious attackers in an effort to model potential external threats.

Upon completion of the assessment, you will prepare reports and present the results to application owners, developers, and business unit information security teams.

Analyse test results, draw conclusions from results, and develop targeted exploit examples.

Consult with operations and software - development teams to ensure potential weaknesses are addressed.

Contribute to the research or development of tools to assist in the vulnerability discovery process.

Identify threats to improve the overall security of applications and infrastructure.

Recommend solutions to help migitate risks and protect entire network i.e. Architect security solution


Skills:

Ability to demonstrate manual testing experience including all of OWASP

Working knowledge of application security mechanisms such as authentication and authorization techniques, data validation, and the proper use of encryption

Technical knowledge of, and the ability to recognize, various types of application security vulnerabilities

Demonstrated experience with common penetration testing and vulnerability assessment tools such as nmap, Wireshark, Nessus, NeXpose, Kali, Metasploit, AppScan, WebInspect, Burp Suite Professional, Acunetix, Arachni, w3af, NTOSpider

Knowledge of a programming or scripting language such a C, C#, Python, Objective C, Java, Javascript, SQL,

Knowledge of Web Services technologies such as XML, JSON, SOAP, REST, and AJAX

Knowledge of web frameworks, including XML, SOAP, J2EE, JSON and Ajax

Experience with Enterprise Java or .NET web application frameworks, including Struts and Spring

Proven analytical and problem solving skills, as well as the desire to assist others in solving issues

Excellent interpersonal skills with a strong interest in the application security domain

Excellent communication and presentation skills and a proven ability to communicate threats and facilitate progress towards long-term remediation

Highly motivated with the willingness to take ownership / responsibility for their work and the ability to work alone or as part of a team.

Ability to produce high level reports

Preferred Skills and competencies:
A+, N+, S+, CCNA
Vulnerability Scanning

Vulnerability Assessment

Valid Certified Ethical Hacker Certificate

Certified Penetration Testing Professional/ OR CISA/CISM/SISSP AND CISSP certification.

NB! CV FORMAT MUST BE PDF

At GBS Holdings, we're committed to building secure, scalable, and high-performance IT infrastructure that supports our diverse business operations. We're looking for a skilled Network and Security Engineer to join our dynamic team. In this role, you'll be responsible for designing, implementing, and managing robust network systems while ensuring the highest standards of security and reliability. If you're passionate about technology and thrive in a collaborative environment, we want to hear from you.

Key Responsibilities:

• Design, implement, and maintain secure network architectures (LAN, WAN, VPN)
• Configure and manage routing, switching, and wireless infrastructure
• Manage and secure FortiGate firewalls and related network security systems
• Provide 3rd line technical support for complex networking and security issues
• Ensure high availability (99.8% uptime) and proactive system maintenance
• Monitor network performance and conduct vulnerability assessments
• Maintain accurate documentation including network diagrams and configuration standards
• Support and maintain Windows Server 2016/2019 and Exchange hybrid environments
• Administer Office 365 and Microsoft Azure environments
• Implement and manage Veeam Backup & Replication for disaster recovery
• Support external SFTP environments and domain/DNS management
• Support endpoint security via Kaspersky Security Centre

Minimum Qualifications and Experience:

• Matric (Required)
• Diploma or Bachelor’s Degree in Information Technology or related field
• CCNA certification (Required)
• FortiGate certification (Advantageous)
• Must have a minimum of 5+ years as a network and security engineer
• Strong experience with routing, switching, FortiGate firewalls, and security best practices
• Background in cybersecurity and infrastructure management
• Good understanding of Microsoft technologies and cloud platforms (Azure, O365)

Behavioural & Competency Skills:

• Excellent communication and interpersonal skills
• Strong analytical and problem-solving abilities
• Able to work independently and collaboratively
• Task-oriented with a focus on timely, high-quality delivery
• Process-driven with attention to detail

Responsibilities

• Day to day Operational administration of network infrastructure, this includes but not limited to.
• Routers, Switches and Wireless infrastructure
• Network and patch rooms and areas (All Clover sites)
• Internet Access
• Wide Area Network (WAN) infrastructure and services
• Local Area Networks (LAN) Infrastructure and services
• DMZ, Firewall, VPN, APN and Proxy infrastructure and services
• Fixed infrastructure (Fibre and Ethernet cabling)
• Ensure system performance and service level agreements (SLA) are achieved.
• Effective monitoring of related infrastructure (Network Operations Centre (NOC))
• Work with third party service providers to ensure efficient operations.
• Work with Impala BIIS team for successful operation and integration of network infrastructure
• Dealing with users and network related calls daily.
• Effective documentation of areas of responsibility.
• Standard operating procedures (SOP) creation and maintenance
• Creation and maintenance of Architectural drawing for all OT installations.
• Creation and maintenance of Logical drawings for all OT related installations within
• area of responsibility will be limited to the OT environment and ICT integration.
• Project management within area or responsibility (small network projects and additions)

Experience

• CompTIA A+ N+
• Cisco Certified Network Associate (CCNA)
• 5 years in an operational role with a strong background on Cisco administration and
• equipment
• 5 years network infrastructure experience
• 5 years network operations management
• 5 years vendor management
• 5 years understanding of Firewall integration into network services
• In depth knowledge of L2 and L3 routing as well as routing protocols with emphasis on OSPF

Reference: NWA002931-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

• Execute network deployment, migration, and upgrades based on design specifications
• Install and configure network equipment
• Participate in structured rollouts and infrastructure refresh projects
• Conduct scheduled preventative maintenance and apply firmware updates
• Monitor and optimize network performance across switching, routing, and firewalls
• Maintain accurate and up-to-date network documentation
• Update diagrams, configurations, and standard procedures
• Generate routine reports on network performance and incidents

• Minimum 3 years of experience supporting enterprise network environments
• Strong understanding of IP networking, routing/switching fundamentals, and firewall configuration
• Certifications:
  • CompTIA Network+ or Security+
  • Cisco CCNA Security
  • PaloAlto PCNSA
  • Vendor-specific (e.g., Arista and Mellanox)
• Experience with SD-WAN (VeloCloud preferred)
• VOIP fundamentals, including SIP, RTP, and QoS
• Exposure to cloud networking (Azure or AWS)
• Familiarity with scripting (Python and PowerShell) and network automation
• Hands-on with wireless networking (Meraki)
• Network performance monitoring and management platforms

• 5 years of experience in the design and implementation of SDWAN
• Design SDN and LAN.
• Implementing and testing SDN solutions that optimize, secure and manage data across connected networks.
• Data Network fault investigations and analysis and the implementation of resolutions.

• Network Architecture & Design.
• Multicast Protocols and Solutions.
• SD-WAN Design Concepts.

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;
li>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.

SKILLS REQUIREMENT

• 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.

QUALIFICATIONS AND EXPERIENCE

• Matric;
• Technical qualification /IT Diploma - CCNA/ACMA certified; CCNP advantageous;
• Minimum of 2 years’ work experience in a networking technical support role;
li>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;
li>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.