Network Security Engineer

Interfront SOC; Pretoria; Hybrid; ZAR 400 000 - 500 000; Full time

Job summary

A cybersecurity firm is seeking a Senior Network Security Engineer in Pretoria to design and implement security infrastructure. Successful candidates will have 6-8 years of experience in network security, a Bachelor's degree, and relevant certifications. Responsibilities include monitoring network traffic, incident response, and ensuring compliance with cybersecurity standards. This is a contract position with a hybrid working model available.

Qualifications

• 6-8 years of experience in Network Security.
• Minimum of 7 years experience in network security engineering.
• Proven experience managing enterprise-grade security infrastructure.

Responsibilities

• Design and maintain network security infrastructure.
• Monitor network traffic to detect anomalies.
• Conduct forensic analysis and support incident response.

Skills

Network security

Incident response

Threat mitigation

Vulnerability management

Cisco firewall configurations

Education

Bachelor's degree in Information Security or Computer Science

CCNP Security, CISSP or equivalent certifications

Tools

Cisco Identity Services Engine (ISE)

Web Application Firewalls (WAF)

Next-Generation Firewalls (NGFW)

SIEM platforms

Job description

Key Responsibilities

• Design, implement and maintain robust network security infrastructure to protect customers’ digital environment.
• Manage and optimize security platforms including firewalls, intrusion prevention systems (IPS), DDoS mitigation tools, VPNs, secure email gateways and Cisco Identity Services Engine (ISE).
• Monitor network traffic to detect anomalies, investigate potential threats and respond promptly to security incidents.
• Conduct forensic analysis and support incident response to ensure timely containment and resolution of security events.
• Ensure compliance with cybersecurity policies, ISO / IEC 27002 standards and relevant regulatory requirements.
• Oversee the lifecycle management of digital certificates and the secure provisioning of third‑party network connections.
• Manage and resolve network security requests and incidents through the Remedy system within agreed service levels.
• Maintain accurate technical documentation, configurations and incident logs to support audits and risk reporting.
• Collaborate with internal teams to identify vulnerabilities, recommend security enhancements and strengthen overall network defense.

Closing date: 12th of November 2025

Position type: 24‑month contract

Available positions: 2

Hybrid position. Successful candidates must be based in the Gauteng area.

These positions are open to persons with disabilities.

Qualifications and Experience

• Bachelor’s degree in Information Security, Computer Science and/or Matric with 6‑8 years of Network Security experience.
• CCNP Security, CISSP or equivalent industry‑recognized security certifications.
• Minimum of 7 years experience in network security engineering or a related discipline.
• Proven experience managing and maintaining enterprise‑grade security infrastructure.
• Demonstrated expertise in incident response, threat mitigation and vulnerability remediation.
• Experience working within regulated environments and adhering to cybersecurity standards such as ISO / IEC 27002.

Key Skills and Competencies

• Technical Expertise: In-depth knowledge of network protocols, Cisco firewall configurations and perimeter defense technologies.
• Security Tools Proficiency: Hands‑on experience with Web Application Firewalls (WAF), Next‑Generation Firewalls (NGFW), Intrusion Prevention Systems (IPS), DDoS protection tools, SIEM platforms and Cisco Identity Services Engine (ISE).
• Vulnerability Management: Strong understanding of OWASP Top 10 vulnerabilities and the ability to assess, remediate and mitigate risks across cloud and on‑premise environments.
• Incident Response: Skilled in detecting, analyzing and responding to network security incidents and conducting forensic investigations.
• Analytical and Problem‑Solving Ability: Exceptional troubleshooting and diagnostic skills to identify and resolve complex network security issues.
• Regulatory and Compliance Awareness: Familiarity with cybersecurity frameworks and standards, particularly ISO / IEC 27002 and related regulatory obligations.
• Documentation and Reporting: Ability to maintain accurate technical records, incident logs and contribute to audit and risk reporting.
• Collaboration and Communication: Strong interpersonal skills to work effectively across technical teams and convey security issues to non‑technical stakeholders.

Work Level: Senior

Job Type: Contract

Salary: Market Related

Duration: 1 - 2 Years

EE Position: No

Location: Pretoria

Key Skills: Network security, Protocols, ASA, TCP/IP, Routers, Windows, Access Control, Information Security, Infrastructure, Linux, IOS, Servers, Troubleshoot, Intrusion Detection, SIEM

Employment Type: Contract

Experience: years

Vacancy: 1