Network Security Engineer

Humankind Group; Cape Town; On-site; ZAR 420,000 - 650,000; Full time

Job summary

Humankind Group in Cape Town is seeking a Mid-Level Network & Security Engineer with hands-on Fortinet experience to deliver secure, reliable network solutions for a diverse client base. You will manage FortiGate firewalls, VPNs and security policies, troubleshoot LAN/WAN and SD-WAN, and work with customers to resolve incidents within SLA targets while building strong relationships.

Ideal candidates have Fortinet NSE4 certification, 3+ years in network/security support, and experience

Qualifications

• Fortinet NSE4 or equivalent certification.
• Minimum 3 years hands-on network and security support.
• Experience administering FortiGate firewalls.
• Experience with IPsec, routing, switching and firewall policy management.
• Strong knowledge of TCP/IP, VLANs, NAT, DNS, DHCP.
• Experience in network security troubleshooting and customer support.
• Solid cybersecurity principles and best practices.

Responsibilities

• Provide remote and onsite support within Managed Services (MSA/SLA) environments.
• Configure, administer and maintain FortiGate firewalls, 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, health checks 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, network diagrams and customer service reports.
• Build strong customer relationships through professional technical guidance and support.

Skills

Fortinet NSE4

FortiGate firewall

IPsec VPN

TCP/IP

VLANs

NAT

DNS

Firewall policy

Troubleshooting

Customer support

Tools

FortiAnalyzer

FortiManager

FortiSwitch

FortiAP

FortiClient EMS

Microsoft 365

Azure networking

Job description

We're Hiring | Mid-Level Network & Security Engineer

Industry: Information Technology | Networking & Cybersecurity

Are you a technically driven Network & Security Engineer with hands-on Fortinet experience and a passion for delivering secure, reliable network solutions?

We are looking for a Mid-Level Network & Security Engineer to join a dynamic technology environment, providing network and cybersecurity support to a diverse customer base. This role is ideal for an experienced engineer who enjoys troubleshooting complex technical challenges, managing security infrastructure and building strong customer relationships.

Key Responsibilities

• 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.

Minimum Requirements

• Mandatory: Fortinet NSE4 certification or current Fortinet Certified Professional equivalent.
• Minimum 3 years' hands-on experience in network and security support.
• Proven experience administering FortiGate firewalls.
• 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

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.