Senior Network Architect

2 weeks ago


Sandton, South Africa Dimension Data Full time
Job Description

The Senior Network Engineer will be responsible for the end-to-end management of Dimension Data's firewall infrastructure. This includes designing, implementing, monitoring, and managing firewalls, as well as setting up secure inter- and intra-organisation communication channels. The role also provides specialist or architecture advice and support in the development, implementation, and maintenance of network engineering across the organisation.

Key Responsibilities
  1. Review client requirements and collaborate with other IT engineers to define the optimal networking and firewalling solutions in accordance with organisational policies.
  2. Design and implement new network solutions and/or improve the efficiency of current networks.
  3. Configure firewalls for usage, manage their day-to-day operations, and perform regular maintenance through upgrades and patches to ensure optimal performance and maximise network efficiency and security.
  4. Configure, manage, and maintain secure intra- and inter-organisational communication channels, such as VPNs and IPSec tunnels.
  5. Perform quarterly firewall health checks, removing unnecessary rules and interfaces, and optimising rules where possible.
  6. Assist with the installation, configuration, and support of network equipment across the LAN, WLAN, WAN, and SD-WAN, both wired and wireless.
  7. Participate in cross-functional troubleshooting support for internal and external clients and network fault investigations.
  8. Liaise with network service providers and vendors, ensuring service level agreements are met and organisational policies and principles adhered to.
  9. Maximise network performance through ongoing monitoring and optimisation.
  10. Ensure supporting documentation and diagrams remain up to date.
  11. Ensure all network equipment is sufficiently secured, so that no unauthorized access can be gained.
  12. Provide monthly reporting as required.
  13. Maintain Network Monitoring Tools.
  14. Configure, Manage and Support Network Access Control (NAC) Systems.


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