Senior Network Engineer

Location: Roodepoort Gauteng (On-site)
Contract Type: Initial 6-Month Contract (with the potential to be extended to 12 months)

Are you an experienced Senior Network Engineer with strong Cisco networking expertise and a passion for maintaining secure reliable and efficient enterprise network infrastructure

Our client is seeking an experienced Senior Network Engineer to administer maintain and support enterprise network infrastructure using predominantly Cisco technologies ensuring stable secure and efficient day-to-day network operations across LAN WAN and hybrid environments.

This is an urgent requirement and preference will be given to candidates who are available to start immediately or who have a short notice period.

To administer maintain and support enterprise network infrastructure using predominantly Cisco technologies ensuring stable secure and efficient day-to-day network operations across LAN WAN and hybrid environments.

• Monitor network availability performance and capacity.
• Perform routine maintenance upgrades and patching.
• Configure and manage Cisco routers and switches.
• Maintain LAN WAN Wi-Fi and VPN connectivity.

• Configure VLANs trunking and IP addressing schemes.
• Manage routing protocols (OSPF EIGRP basic to intermediate level).
• Administer DHCP DNS and IP management.
• Maintain configuration backups and version control.

• Provide 1st and 2nd line network support.
• Troubleshoot connectivity issues (LAN Wi-Fi VPN internet and VoIP).
• Support Service Desk in resolving network-related incidents.
• Assist in onboarding of new systems and users.

• Log track and resolve incidents within SLA.
• Perform root cause analysis for recurring issues.
• Escalate complex issues to Network Engineers or vendors.
• Participate in major incident resolution processes.

• Apply firmware updates and security patches.
• Configure basic firewall rules (Cisco ASA / FortiGate).
• Monitor network for anomalies and vulnerabilities.
• Support compliance with IT security policies and standards.

• Use monitoring tools (e.g. SolarWinds PRTG CheckMK).
• Generate network performance and availability reports.
• Proactively identify and resolve performance degradation.

• Maintain network diagrams and topology documentation.
• Update configuration records and asset registers.
• Develop and maintain SOPs and operational procedures.

Minimum

• Relevant Degree / Diploma in IT Networking or Engineering.

• Cisco Certified Network Associate (CCNA).

• Cisco Certified Network Professional (CCNP Enterprise).

• 58 years experience in enterprise environments.
• Proven ability to:
  • Manage network infrastructure independently.
  • Troubleshoot complex issues across LAN/WAN.
  • Support high-availability environments.
• Experience with:
  • MPLS and multi-site connectivity.
  • Firewall and WAN failover configurations.
  • Supporting DR/BCP environments.
• Strong vendor engagement (ISPs Cisco partners).

Strong understanding of:

• TCP/IP subnetting DNS DHCP.
• VLANs STP trunking.
• Routing fundamentals (OSPF EIGRP).

• Cisco IOS configuration and troubleshooting.
• Cisco Catalyst switching (Layer 2 / Layer 3).
• Basic Cisco router configuration.
• Exposure to Cisco wireless solutions (WLC advantageous).

• Basic firewall configuration (ACLs NAT).
• VPN technologies (site-to-site remote access).
• Understanding of network segmentation and access control.

• MPLS broadband DIA circuits.
• VPN connectivity and failover mechanisms.
• Basic QoS concepts.

• Network monitoring platforms (SolarWinds PRTG CheckMK).
• Log analysis and troubleshooting tools.
• Packet capture basics (Wireshark advantageous).

• Strong troubleshooting and analytical thinking.
• Attention to detail.
• Good communication and user support skills.
• Ability to work under pressure in incident situations.

• Initial 6-month contract with the potential to be extended to 12 months.
• Fully on-site position based in Roodepoort.
• Opportunity to support and maintain enterprise network infrastructure using predominantly Cisco technologies.

If you are an experienced Senior Network Engineer with the required qualifications technical skills and enterprise networking experience wed love to hear from you.