Senior Network Security Engineer

Recruiter:

Data Centrix

Job Ref:

JHB006916/MS

Date posted:

Tuesday, October 14, 2025

Location:

Johannesburg, South Africa

SUMMARY:
On behalf of our client—a leading organization in the automotive industry—we are seeking a Senior Network Security Engineer to play a pivotal role in safeguarding and optimizing their enterprise IT infrastructure.

In this critical position, you'll take the lead on network security operations, provide mentorship to technical teams, and navigate complex security challenges across a dynamic and diverse technology environment. The role involves hands-on responsibility across key areas including project implementation, incident response, vendor management, and advanced technical support.

You’ll work with a broad and modern stack that includes PaloAlto firewalls, Mellanox core switches, Arista routers, Saisei internet shaping, Cisco Meraki switching and WiFi, and VeloCloud SD-WAN.

As a senior contributor, you’ll be the go-to expert for escalated issues, lead critical security initiatives, and ensure the performance, reliability, and protection of the company’s enterprise-grade infrastructure.

POSITION INFO:
Requirements:

CCNA certification, entry-level PaloAlto qualification
4+ years of network and firewall management in
- Enterprise network design and implementation
- Multi-vendor environment management
- Security incident response and forensics
- Network automation and scripting (Python, PowerShell)
- SIEM and security monitoring tools

LAN understanding, WiFi and switching management, PaloAlto firewall configuration, multi-vendor network troubleshooting, and core networking protocols.
VeloCloud SD-WAN management, Cisco certification, server technology expertise, cloud platforms knowledge, and network monitoring tools.

Overall Responsibilities:

Will be involved in Security project implementation,
Incident response,
vendor coordination,
Technical support activities across enterprise technology stack including PaloAlto firewalls, Mellanox core switches, Arista routers, Saisei internet shaping, Cisco Meraki switching and WiFi infrastructure, and VeloCloud SD-WAN solutions.

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