227 Network Admin 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

Minimum Requirements:

Are you a highly motivated security specialist with hands-on Fortinet experience looking for your next big challenge?

Our client is building a dynamic, energetic team and needs YOU to help secure cutting-edge networks!

1. Configure & manage top security tech (Fortinet-focused) - Project Management experience is a must!
2. Respond to security alerts & analyze reports
3. Keep systems updated & patched

1. 3-5+ years in network security engineering
2. 2+ years hands-on experience with Fortinet products (mandatory)
3. Relevant IT security qualifications (Fortinet certs preferred)
4. Strong communication, problem-solving & attention to detail

Salary: Negotiable based on experience

Only applicants with the required experience will be considered. Ready to level up your career?