Senior IT Support Specialist - Network Infrastructure

Placements24; South Africa; Hybrid; ZAR 480,000 - 720,000; Full time

Benefits offered by this job

Medical aid

Retirement fund

Performance bonuses

Hybrid work model

Job summary

Placements24 seeks a Senior IT Support Specialist with a strong networking focus to join our team in Tembisa, Gauteng. You will diagnose complex network issues, manage routers, switches, firewalls, and wireless access points, and lead network modernization efforts.

You will guide junior staff, document network configurations, and collaborate with vendors. A Bachelor’s degree and 5+ years in IT support are required, with CCNA/CCNP or Network+ desirable.

Qualifications

• Bachelor's degree in Computer Science, Information Technology, or a related field, or equivalent work experience.
• Minimum of 5 years of experience in IT support with a strong specialization in network administration.
• Deep knowledge of TCP/IP, DNS, DHCP, routing protocols (OSPF/BGP), and network security principles.
• Hands-on experience with network hardware from major vendors (Cisco, Juniper, Fortinet).
• Proficiency in configuring and troubleshooting firewalls, VPNs, and wireless networks.
• Experience with network monitoring tools (SolarWinds, PRTG) is essential.

Responsibilities

• Provide advanced technical support for the company's network infrastructure, including routers, switches, firewalls, and wireless access points.
• Diagnose and resolve complex network connectivity and performance issues quickly and efficiently.
• Install, configure, and maintain network hardware and software components.
• Implement and manage network security measures, including firewalls, VPNs, and IDSs.
• Monitor network performance and proactively identify potential issues and bottlenecks.
• Develop and maintain network documentation, diagrams, configurations, and procedures.
• Assist in planning and execution of network upgrades and migrations.
• Mentor junior IT staff and provide guidance on networking best practices.
• Manage user accounts and permissions related to network resources.
• Collaborate with vendors to resolve network-related incidents.
• Participate in on-call rotation for critical network support outside business hours.

Skills

Networking expertise

TCP/IP/DNS/DHCP

Network security

Vendor hardware experience

Problem-solving

Communication skills

Education

Bachelor's degree in CS/IT or related field

Tools

Cisco hardware

Juniper hardware

Fortinet hardware

SolarWinds

PRTG

Job description

About the Role

Our client is seeking an experienced and highly capable Senior IT Support Specialist with a strong focus on network infrastructure to join their team in Tembisa, Gauteng. This role is crucial for maintaining and improving the company's IT network, ensuring seamless connectivity and operational efficiency for all users. You will be responsible for diagnosing and resolving complex network issues, managing network hardware and software, and implementing network upgrades and security measures. The ideal candidate will possess deep technical expertise in networking, excellent problem-solving abilities, and a proactive approach to IT support. This position offers the opportunity to make a significant impact on the company's technological foundation in Tembisa.

Key Responsibilities

• Provide advanced technical support for the company's network infrastructure, including routers, switches, firewalls, and wireless access points.
• Diagnose and resolve complex network connectivity and performance issues in a timely manner.
• Install, configure, and maintain network hardware and software components.
• Implement and manage network security measures, including firewalls, VPNs, and intrusion detection systems.
• Monitor network performance and proactively identify potential issues and bottlenecks.
• Develop and maintain network documentation, including diagrams, configurations, and procedures.
• Assist in the planning and execution of network upgrades and migrations.
• Provide technical guidance and mentorship to junior IT support staff.
• Manage user accounts and permissions related to network resources.
• Collaborate with vendors and service providers to resolve network-related incidents.
• Participate in an on-call rotation for critical network support outside of standard business hours.

Requirements

• Bachelor's degree in Computer Science, Information Technology, or a related field, or equivalent work experience.
• Minimum of 5 years of experience in IT support, with a strong specialization in network administration and support.
• In-depth knowledge of TCP/IP, DNS, DHCP, routing protocols (e.g., OSPF, BGP), and network security principles.
• Hands‑on experience with network hardware from major vendors (e.g., Cisco, Juniper, Fortinet).
• Proficiency in configuring and troubleshooting firewalls, VPNs, and wireless networks.
• Experience with network monitoring tools (e.g., SolarWinds, PRTG) is essential.
• Excellent analytical and problem‑solving skills.
• Strong communication and interpersonal skills, with the ability to explain technical issues to non‑technical users.
• Ability to work effectively in a hybrid environment, managing on‑site responsibilities in Tembisa with remote support capabilities.
• Relevant certifications such as CCNA, CCNP, or CompTIA Network+ are highly desirable.

Benefits

• Our client offers a competitive salary and a comprehensive benefits package, including medical aid, retirement fund, and performance bonuses.
• Opportunities for continuous professional development and advanced network certifications are provided.
• This role offers a hybrid work model, providing flexibility for employees working within the Tembisa area.
• You will join a collaborative IT team and have the chance to work with modern network technologies.
• Career progression opportunities within the IT department are available for high performers.
• The company values its employees and fosters a supportive work environment.