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Specialist : IT Network Security

Vodafone Global EnterpriseJohannesburg, ZA

11 hours ago

Job description

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

Your responsibilities will include :

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.

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Security Specialist • Johannesburg, ZA

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