Specialist : IT Network Security

Vodafone Global Enterprise; Johannesburg; On-site; ZAR 600 000 - 850 000; Full time

Job summary

A leading global telecommunications company is looking for a Specialist in IT Network Security in Johannesburg. You will implement and improve network security controls, design security services, and ensure compliance across the network. The ideal candidate has 3–5 years in network security engineering, hands-on experience with tools like Cisco FTD and Fortinet, and strong analytical skills. Join us in building resilient network security solutions.

Qualifications

• 3–5 years in network security engineering/operations.
• Cisco CCNA/CCNP Security certification preferred.
• Fortinet NSE4+ certification is essential.

Responsibilities

• Design, implement and operate network security services.
• Provide Tier-3 support and participate in on-call rota.
• Meet compliance standards and manage rule exemptions.

Skills

Analytical troubleshooting

Stakeholder engagement

Scripting & automation mindset

Resilience under pressure

Clear communication

Time management

Education

Matric

3 year degree / diploma in Computer Science or related

Tools

Cisco FTD

Fortinet

Cisco ISE

VPN

IDS / IPS

Algosec

Python

Ansible

Job description

Overview

Job title : Specialist : IT Network Security

Job Location : Gauteng, Johannesburg

Deadline : October 31, 2025

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Role Purpose

To implement, operate, and continuously improve secure, resilient network security controls—including Cisco FTD, Fortinet, Cisco ISE (NAC), VPN, IDS / IPS, and Algosec automation—using SRE principles to ensure availability, compliance, and rapid incident response across enterprise networks

Responsibilities

• Design, implement and operate network security services (Cisco FTD / Fortinet firewalls, VPN, Cisco ISE, IDS / IPS).
• Provide Tier-3 support, incident response, problem management and change approval; participate in 24×7 on-call rota.
• Run health checks and monitoring; drive continuous improvement (automation, rule hygiene, capacity).
• Meet compliance (PCI / SOX), manage rule exemptions and cost-effective mitigations using Algosec.
• Engage stakeholders and vendors; translate Vodafone requirements into effective solutions.

The ideal candidate for this role will have

• Matric (Essential)
• 3 year degree / diploma in Computer Science or related (Essential)
• 3–5 years in network security engineering / operations. One or more of : Cisco CCNA / CCNP Security (incl. FTD), Fortinet NSE4+, Algosec certification / training.
• Cisco ISE training, SRE Foundation, ITIL, cloud network security (Advantageous)

Knowledge and experience

• Hands-on with Cisco FTD / FMC
• Fortinet FortiGate, Cisco ISE (802.1X, posture, TACACS+), VPN (AnyConnect / SSL, IPsec), and IDS / IPS; Algosec for firewall automation & compliance;
• automation via Python / Ansible / REST;
• Observability (SNMP, syslog, SIEM / SOAR). SRE practices (SLIs / SLOs, error budgets,
• Incident Remediation
• Able to learn & apply Vodafone requirements.

Skills

• Analytical troubleshooting
• stakeholder engagement
• scripting & automation mindset
• resilience under pressure
• clear communication
• time management

Closing date for Applications : 22 October 2025.