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Location
In office (Midrand)
Seniority
Senior · 5+ years exp
Employment
Full-Time

First seen by Alion on Oct 30, 2026.

Overview
Company
Impact
Profile match
Paracon Duties & Responsibilities

Senior Network & Security Engineer

Job Purpose
The Senior Network & Security Engineer is responsible for designing, implementing, securing, maintaining and supporting enterprise network and security infrastructure. The role requires strong hands-on technical expertise across networking, firewalls, cloud connectivity and cybersecurity, together with the ability to troubleshoot complex technical issues and provide high-level technical guidance.

Key Responsibilities

  • Network Engineering & Infrastructure
  • Design, implement, configure and maintain enterprise network infrastructure.
  • Provide advanced troubleshooting and technical support for complex network-related incidents.
  • Perform network infrastructure audits and identify areas for improvement.
  • Configure and maintain routers, switches, wireless infrastructure and associated network technologies.
  • Plan and implement network changes, upgrades and infrastructure improvements.
  • Monitor network performance, availability and capacity.
  • Perform network maintenance, optimisation and lifecycle management.
  • Develop and maintain network documentation, standards and technical procedures.
  • Assist with the design and implementation of resilient and highly available network solutions.

    The ideal candidate should have strong experience in several of the following areas:

    Networking
  • Enterprise LAN/WAN
  • Routing and switching
  • TCP/IP
  • VLANs
  • Network protocols
  • Network troubleshooting
  • Network infrastructure design
  • Network monitoring
  • Network security

    Security
  • Fortinet
  • FortiGate
  • FortiManager
  • FortiAnalyzer
  • FortiWeb
  • Firewall administration
  • Firewall policy management
  • VPN
  • Security controls
  • Security auditing
  • Security incident response

    Cisco
  • Cisco routers
  • Cisco switches
  • Cisco security technologies
  • Cisco network administration

    Additional Technologies
  • F5 BIG-IP administration
  • MikroTik
  • Network monitoring and management tools
  • Infrastructure auditing
  • Security standards and frameworks
  • Qualifications & Certifications

    Relevant qualifications and certifications may include:
  • CCNA
  • CCNP Enterprise
  • Cisco Certified Specialist - Enterprise Advanced Infrastructure Implementation
  • Cisco Certified Specialist - Enterprise Core
  • Cisco Certified Specialist - Security Core
  • Fortinet NSE 4 &5 & 6 & 7
  • Fortinet Application Delivery Fundamentals
  • F5 BIG-IP / F5 Administration certification
  • MikroTik MTCNA
  • Juniper JNCIA
  • IT Systems Support / A+ or equivalent

    Experience
    Minimum 5-8 years' experience in network engineering, network infrastructure and/or network security.
    Ideal Candidate Profile

    The ideal candidate is a senior-level Network and Security Engineer with strong hands-on enterprise networking and cybersecurity experience. They should have a solid Cisco foundation, extensive firewall and security knowledge-particularly Fortinet-and the ability to troubleshoot and resolve complex infrastructure issues.

    A candidate with CCNP-level networking expertise, Fortinet certifications, Azure networking experience and strong firewall/security administration experience would be particularly well suited to this role.
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