Senior Network Infrastructure Technician

Placements24; Johannesburg; On-site; ZAR 480,000 - 760,000; Full time

Benefits offered by this job

Company vehicle and fuel allowance

Competitive salary

Training and certifications

Job summary

Placements24 is seeking a Senior Network Infrastructure Technician for our leading telecom client in Johannesburg. The role involves installing, configuring, maintaining and troubleshooting complex network infrastructure to ensure reliability.

You will manage enterprise‑grade devices, implement security measures, and support critical operations on-site with occasional travel. You will work with routers, switches, firewalls and access points, plan upgrades, and mentor junior technicians while

Qualifications

• Bachelor's or higher in IT/networking.
• 5+ years in network infrastructure installation, configuration and maintenance.
• Strong knowledge of TCP/IP, DNS, DHCP, routing and switching.
• Experience with enterprise hardware from Cisco/Juniper.
• CCNA/CCNP or equivalent certification advantageous.

Responsibilities

• Install, configure, and maintain network hardware (routers, switches, firewalls, APs).
• Diagnose and resolve complex connectivity and performance issues.
• Monitor network performance and security; implement proactive measures.
• Document configurations, procedures, and troubleshooting steps.
• Collaborate with IT teams and mentor junior technicians.

Skills

TCP/IP

Network troubleshooting

Routing protocols (BGP/OSPF)

Network security

VPN

Teamwork/communication

Education

Bachelor's degree in IT/Networking

CCNA/CCNP or equivalent

Tools

Cisco devices

Juniper devices

Palo Alto / Fortinet firewalls

SolarWinds / PRTG monitoring

Job description

About the Role

Our client, a leading telecommunications provider, is seeking a highly skilled and experienced Senior Network Infrastructure Technician to join their operations team in Johannesburg, Gauteng . This hands‑on role involves the installation, configuration, maintenance, and troubleshooting of complex network infrastructure, ensuring optimal performance and reliability. You will be responsible for managing enterprise‑level network devices, implementing network security protocols, and supporting critical network operations. The ideal candidate possesses a deep understanding of networking principles, a proven ability to resolve challenging technical issues, and a commitment to maintaining high standards of service. This is a field‑based position that requires significant on‑site presence and may involve occasional travel and on‑call duties. You will play a vital role in ensuring the seamless connectivity of our services, supporting a wide range of business‑critical applications and customer needs. We are looking for a dedicated professional who thrives in a dynamic environment and is eager to contribute to a vital infrastructure team.

Key Responsibilities

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


• Diagnose and resolve complex network connectivity and performance issues.


• Monitor network performance and security, implementing proactive measures to prevent outages.


• Implement and manage network security measures to protect against threats.


• Perform regular network maintenance, including firmware updates and patching.


• Manage IP addressing, VLANs, and routing protocols.


• Respond to network alerts and incidents in a timely and efficient manner.


• Document network configurations, procedures, and troubleshooting steps.


• Collaborate with other IT teams to ensure seamless integration of network services.


• Assist in the planning and design of network upgrades and expansions.


• Provide technical support and guidance to junior technicians.


• Maintain inventory of network equipment and assets.

Requirements

• National Diploma or Bachelor's degree in Information Technology, Computer Networking, or a related field.


• 5+ years of experience in network infrastructure installation, configuration, and maintenance.


• In-depth knowledge of TCP/IP, DNS, DHCP, routing protocols (e.g., BGP, OSPF), and switching technologies.


• Hands‑on experience with enterprise‑grade network hardware from vendors like Cisco, Juniper, or similar.


• Proficiency in configuring and managing firewalls (e.g., Palo Alto, Fortinet).


• Experience with network monitoring tools (e.g., SolarWinds, PRTG).


• Understanding of VPN technologies and network security best practices.


• Relevant certifications such as CCNA, CCNP, or equivalent.


• Strong troubleshooting and problem‑solving skills.


• Excellent communication and teamwork abilities.


• Ability to work independently and manage time effectively.

Benefits

• Competitive salary commensurate with experience.


• Comprehensive medical aid and provident fund.


• Opportunities for advanced training and certifications.


• Company vehicle and fuel allowance.


• Paid time off and company holidays.


• Exposure to diverse and cutting‑edge network technologies.


• Supportive team environment with opportunities for mentorship.


• Performance‑based bonuses.


• Life and disability insurance.


• Access to company facilities and amenities.