Network Infrastructure Specialist

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

About the Role

Our client, a leading technology solutions provider, is looking for a skilled and experienced Network Infrastructure Specialist to join their operations team in Pretoria, Gauteng . This role is critical for designing, implementing, maintaining, and optimizing the company's robust network infrastructure. The ideal candidate will have a deep understanding of network protocols, hardware, and security best practices. We are seeking a proactive individual with excellent troubleshooting skills and a commitment to ensuring high network availability and performance. This position offers the opportunity to work with advanced networking technologies, manage complex projects, and contribute significantly to the company's technological backbone. Join a forward-thinking organization dedicated to innovation and excellence in the IT sector.

Key Responsibilities

• Design, implement, and manage local area networks (LANs), wide area networks (WANs), and wireless networks.


• Configure and maintain network hardware, including routers, switches, firewalls, and access points.


• Monitor network performance and troubleshoot connectivity issues, ensuring optimal uptime.


• Implement and manage network security measures, including intrusion detection and prevention systems.


• Develop and maintain network documentation, including diagrams, configurations, and procedures.


• Plan and execute network upgrades and migrations.


• Provide technical support for network-related issues to end-users and IT staff.


• Ensure network infrastructure complies with industry standards and best practices.


• Stay current with emerging network technologies and trends.


• Participate in disaster recovery planning and testing.

Requirements

• Bachelor's degree in Computer Science, Information Technology, or a related field, or equivalent practical experience.


• Minimum of 5 years of experience in network administration and infrastructure management.


• Strong knowledge of TCP/IP, DNS, DHCP, VLANs, and routing protocols (e.g., OSPF, BGP).


• Hands-on experience with enterprise-level network hardware from vendors such as Cisco, Juniper, or HP.


• Proficiency in network security principles and technologies.


• Experience with network monitoring tools (e.g., Nagios, Zabbix).


• Relevant certifications such as CCNA, CCNP, or equivalent are highly desirable.


• Excellent analytical, problem-solving, and diagnostic skills.


• Strong communication and interpersonal skills.


• Ability to work effectively both independently and as part of a team.

Benefits

Our client offers a competitive salary and a comprehensive benefits package, including medical, dental, and vision insurance. A retirement savings plan with company matching is available. Opportunities for professional development, including advanced training and certification reimbursement, are provided. Generous paid time off, including vacation and sick days, is offered. Employees have access to the latest technology and a supportive, collaborative work environment. This role provides excellent career advancement prospects within a growing IT department.