Senior Network Admin - Hybrid, Enterprise Networking

Placements24; Sandton; Hybrid; ZAR 900,000 - 1,200,000; Full time

Benefits offered by this job

Competitive salary package

Performance-based bonus

Medical aid and retirement fund

Professional development

Career progression opportunities

Job summary

Placements24 is seeking a Senior Network Administrator in Sandton, Gauteng to design, implement, and secure complex network infrastructure. This role combines on-site and remote work for routine tasks and monitoring, supporting critical infrastructure in a financial services context.

You will oversee routers, switches, firewalls, VPNs, and wireless deployments, while coordinating with other IT teams to ensure seamless service delivery.

Qualifications

• Bachelor's degree in IT or related field, or equivalent experience.
• 6+ years of enterprise network administration experience.
• CCNA/CCNP/JNCIS or equivalent certifications desirable.
• Strong knowledge of TCP/IP, BGP, OSPF, VLANs, STP, WAN technologies.
• Experience with firewalls, VPNs, IDS/IPS.
• Experience with monitoring tools like SolarWinds or Nagios.
• Hybrid work capability and strong communication.

Responsibilities

• Design, implement, configure, and maintain network infrastructure (routers, switches, firewalls, VPNs, wireless).
• Monitor network performance and availability; resolve bottlenecks.
• Ensure network security with firewalls, IDS/IPS, and access controls.
• Perform regular maintenance, updates, and patching.
• Troubleshoot complex network problems and find root causes.
• Develop and maintain network documentation and SOPs.
• Collaborate with IT teams to integrate network services with servers and apps.
• Plan and execute network upgrades and migrations.
• Provide guidance to junior admins and IT staff.
• Stay updated on networking technologies and threats.
• Participate in on-call rotation for emergencies.
• Ensure compliance with business requirements and standards.

Skills

Network design

Troubleshooting

Security

Project planning

Communication

Education

Bachelor's degree in IT/CS

Tools

SolarWinds

Nagios

Cisco ASA

Fortinet

Job description

Placements24 is seeking a Senior Network Administrator in Sandton, Gauteng to design, implement, and secure complex network infrastructure. This role combines on-site and remote work for routine tasks and monitoring, supporting critical infrastructure in a financial services context.

You will oversee routers, switches, firewalls, VPNs, and wireless deployments, while coordinating with other IT teams to ensure seamless service delivery.