Networking and Security Mid-Level Engineer

JVR Software; Wes-Kaap; Hybrid; ZAR 600,000 - 900,000; Full time

Job summary

JVR Software in South Africa is seeking a proactive network and security support professional to deliver remote and onsite assistance within Managed Services environments. You will administer Fortinet firewalls, troubleshoot LAN/WAN, and maintain security configurations.

The ideal candidate holds Fortinet NSE4 or equivalent, with at least 3 years of hands‑on experience in network and security support, and strong knowledge of IPsec VPNs, TCP/IP, NAT and routing.

Qualifications

• Fortinet NSE4 certification or equivalent required

Responsibilities

• Provide remote and onsite technical support within Managed Services environments.
• Administer Fortinet firewalls, including policies, NAT, VPNs and security profiles.
• Troubleshoot LAN, WAN, wireless, SD‑WAN, routing and switching environments.
• Investigate security alerts, vulnerabilities and suspicious activity.
• Perform firewall upgrades, configuration reviews and security hardening.
• Conduct root cause analysis and ensure incidents are resolved within SLA targets.
• Monitor network performance and identify opportunities for optimisation.
• Maintain technical documentation and customer service reports.
• Build strong customer relationships through professional technical guidance and support.

Skills

Fortinet NSE4

Network security

IPsec VPN

Routing & Switching

TCP/IP & protocols

Troubleshooting

Cybersecurity fundamentals

Tools

FortiAnalyzer

FortiManager

FortiSwitch

FortiAP

FortiClient EMS

Microsoft 365

Azure networking

Job description

• Provide remote and onsite technical support within Managed Services (MSA/SLA) environments.


• Administer, configure and maintain FortiGate firewalls, including firewall policies, NAT, VPNs and security profiles.


• Troubleshoot LAN, WAN, wireless, SD-WAN, routing and switching environments.


• Investigate security alerts, vulnerabilities and suspicious network activity.


• Perform firewall upgrades, configuration reviews, network health checks and security hardening.


• Conduct root cause analysis and ensure incidents are resolved within agreed SLA targets.


• Monitor network performance and identify opportunities for optimisation.


• Maintain technical documentation, network diagrams and customer service reports.


• Build strong customer relationships through professional technical guidance and support.


• Mandatory: Fortinet NSE4 certification or current Fortinet Certified Professional equivalent.


• Minimum 3 years’ hands‑on experience in network and security support.


• Practical experience with IPsec VPN technologies, routing, switching and firewall policy management.


• Strong understanding of TCP/IP, VLANs, NAT, DNS, DHCP, routing protocols and wireless networking.


• Demonstrated network security troubleshooting and customer support experience.


• Strong understanding of cybersecurity principles and best practices.

Advantageous Experience

• CCNA, CompTIA Network+ or equivalent networking certification.


• Exposure to FortiAnalyzer, FortiManager, FortiSwitch, FortiAP and FortiClient EMS.


• Knowledge of Microsoft 365 and Azure networking fundamentals.


• Exposure to ZTNA, SD‑WAN and managed services environments.

The Ideal Candidate

You are a proactive problem‑solver with strong analytical and troubleshooting abilities. You thrive in a customer‑facing technical environment, work independently and take ownership of technical challenges while maintaining high service delivery standards.