Senior Network Engineer Fortinet & Cisco Specialist

Netsurit; Johannesburg; On-site; ZAR 500,000 - 720,000; Full time

Job summary

A leading IT solutions company in Johannesburg seeks a Senior Network Engineer to manage enterprise-grade networking operations. The role involves firewall management, switching expertise, and proactive infrastructure oversight. Join a supportive team that focuses on ownership, growth, and innovation in a dynamic environment.

Benefits

Flexible work arrangements

Continuous learning opportunities

Cutting-edge technology environment

Qualifications

• Proactive problem-solver who anticipates issues.
• Strong analytical skills for troubleshooting.
• Clear communicator bridging technical and non-technical teams.

Responsibilities

• Deploy, configure, and maintain Fortinet FortiGate firewalls.
• Configure VLANs, trunking, and Layer 3 routing on Cisco and Dell switches.
• Analyze network logs and troubleshoot protocols using Wireshark.

Skills

Problem-solving

Analytical skills

Communication

Collaboration

Education

Fortinet NSE4 or higher

Cisco CCNA / CCNP

Dell Networking (N-Series/S-Series)

ITIL Foundation

Tools

Wireshark

PRTG

SolarWinds

Nagios

Job description

Are you a networking ninja with a passion for firewalls, switching, and proactive infrastructure management? We're looking for a Senior Network Engineer to join our dynamic team and take ownership of our enterprise-grade network environment.

What You'll Be Doing

• Firewall Mastery: Deploy, configure, and maintain Fortinet FortiGate firewalls. Create policies, manage VPNs, perform diagnostics, and keep firmware up to date.
• Switching Expertise: Work hands-on with Cisco and Dell switches across core and access layers. Configure VLANs, trunking, EtherChannel, and Layer 3 routing.
• Network Protocols & Troubleshooting: Dive deep into Layer 2/3 networking, routing protocols (OSPF, BGP), and use tools like Wireshark and FortiGate for packet analysis.
• Monitoring & Optimization: Use tools like PRTG, SolarWinds, or Nagios to keep our network healthy and responsive. Analyze logs, SNMP traps, and NetFlow data.
• Documentation & Change Management: Maintain accurate network diagrams, IP schemas, and follow structured change control processes.

Who You Are

• A proactive problem-solver who spots issues before they become incidents.
• A methodical troubleshooter with strong analytical skills.
• A clear communicator who can bridge the gap between technical and non-technical teams.
• A collaborative team player who thrives in cross-functional environments.
• Someone who owns incidents from start to finish, including root cause analysis.

Preferred Certifications

• Fortinet NSE4 or higher
• Cisco CCNA / CCNP
• Dell Networking (N-Series/S-Series)
• ITIL Foundation (for change/incident handling)

Why Join Us?

• Work with cutting-edge tech in a fast-paced, supportive environment.
• Be part of a team that values ownership, growth, and innovation.
• Enjoy flexible work arrangements and continuous learning opportunities.

Ready to level up your networking career?

Apply now and lets build something great together.

About Netsurit: We are #305 on Inc 5000 America's Fastest-Growing Private Companies! We were also awarded the 2024 Winner for Global MSP501 in the Top 500 Managed Service Providers!

With headquarters in New York, Netsurit is a global leader in IT solutions, providing comprehensive managed services, cybersecurity, AI capabilities, and strategic insights for organizations of all sizes.

For 27 years, Netsurit has helped more than 600 businesses navigate the complexities of the modern workplace by ensuring critical applications and infrastructure are always on, secure, and resilient.

A Note to Third Parties: Principals only. Recruiters, please don't contact this job poster. Please do NOT contact us with unsolicited services or offer