Senior Network Infrastructure Engineer

Placements24; South Africa; On-site; ZAR 420,000 - 700,000; Full time

Job summary

Placements24 in Pretoria, Gauteng, is seeking a Network Infrastructure Specialist to design, implement, and optimize our organization's network backbone. You will work on LANs, WANs, wireless networks, and security controls, ensuring high availability and performance across critical services.

The ideal candidate has at least 5 years of hands-on experience with enterprise networking hardware from Cisco/Juniper/HP, strong TCP/IP skills, and experience with monitoring tools like Nagios or Zabbix,

Qualifications

• Bachelor's degree in Computer Science, Information Technology, or related field or equivalent practical experience.
• Minimum 5 years of network administration and infrastructure management experience.
• Strong knowledge of TCP/IP, DNS, DHCP, VLANs, and routing protocols (OSPF, BGP).
• Hands-on experience with enterprise networking hardware from Cisco/Juniper/HP.

Responsibilities

• Design, implement, and manage LANs, WANs, and wireless networks.
• Configure and maintain network hardware (routers, switches, firewalls, APs).
• Monitor performance and troubleshoot connectivity for uptime.
• Implement and manage network security measures (IDS/IPS).
• Develop and maintain network diagrams, configurations, and procedures.
• Plan and execute network upgrades and migrations.
• Provide technical support for network issues to end-users and IT staff.
• Ensure compliance with industry standards and best practices.
• Stay current with emerging network technologies and trends.
• Participate in disaster recovery planning and testing.

Skills

TCP/IP

DNS

DHCP

VLANs

Routing protocols

Cisco hardware

Juniper hardware

HP hardware

Network security

Monitoring tools

CCNA

CCNP

Team player

Education

Bachelor's degree

Tools

Nagios

Zabbix

Job description

Placements24 in Pretoria, Gauteng, is seeking a Network Infrastructure Specialist to design, implement, and optimize our organization's network backbone. You will work on LANs, WANs, wireless networks, and security controls, ensuring high availability and performance across critical services.

The ideal candidate has at least 5 years of hands-on experience with enterprise networking hardware from Cisco/Juniper/HP, strong TCP/IP skills, and experience with monitoring tools like Nagios or Zabbix,