Network Specialist
NTT DATA
Johannesburg, Gauteng
Administrative and clerical roles handle the day-to-day paperwork, scheduling and record-keeping that keep SA businesses running, and are a popular path for matriculants with strong organisation skills.
This listing does not state a salary. As a guide, admin roles in South Africa typically pay R8 000 to R20 000 a month (indicative).
Job description
Summary of role
The Network Administrator is responsible for the day-to-day operational administration, availability, performance, and documentation of the network infrastructure across all sites. This role ensures stable, secure, and efficient network services while meeting agreed service levels and supporting business operations.
Responsibilities
Network Infrastructure Operations
- Perform day-to-day operational administration of network infrastructure, including:
- Routers, switches, and wireless infrastructure
- Internet access services
- Wide Area Network (WAN) infrastructure and services
- Local Area Network (LAN) infrastructure and services
- Manage and support:
- DMZ, firewall, VPN, APN, and proxy infrastructure and services
- Fixed infrastructure, including fibre and Ethernet cabling
- Maintain and oversee network patch rooms and network-related areas across all Clover sites
Performance & Monitoring
- Ensure system performance and availability targets are met in line with agreed Service Level Agreements (SLAs)
- Monitor network infrastructure through the outsourced Network Operations Centre (NOC)
- Proactively identify and resolve network performance, availability, and security issues
Vendor & Stakeholder Management
- Work closely with third-party service providers to ensure efficient operations and service delivery
- Coordinate with vendors for incident resolution, maintenance, and upgrades
- Liaise daily with users and resolve network-related calls and incidents
Documentation & Standards
- Create, maintain, and update:
- Network architecture diagrams for all Clover installations
- Logical network diagrams within the assigned area of responsibility
- Standard Operating Procedures (SOPs) within area of responsibility
- Accurate and up-to-date documentation for network configurations and processes
Projects & Continuous Improvement
- Manage and participate in small network-related projects within area of responsibility
- Assist with network upgrades, changes, and optimisation initiatives
- Identify opportunities to improve network reliability, performance, and operational efficiency
Qualifications:
- Matric and National Diploma or Bachelor's Degree in Information Technology
- Cisco Certified Network Associate (CCNA)
- Cisco Certified Network Professional (CCNP)
- CompTIA Network+
- Fortinet / Palo Alto / firewall-related certifications
- ITIL Foundation
Skills
- Strong knowledge of enterprise networking (LAN, WAN, wireless)
- Understanding of firewalls, VPNs, DMZs, and security best practices
- Experience working with ISPs and managed service providers
- Strong troubleshooting and problem-solving skills
- Ability to document technical environments clearly and accurately
- Good communication skills with both technical and non-technical users
Good to know
What does this admin job pay?
This listing does not state a salary. As a guide, admin roles in South Africa typically pay R8 000 to R20 000 a month (indicative).
Do I need experience for admin jobs in Johannesburg?
This admin role may ask for some experience or a relevant qualification. Read the listing for the specifics before you apply.
How do I apply for this job?
Tap "Apply on Indeed" to open the original listing, where you can read the full description and apply directly. JobsZA never charges you to apply, and you should never pay money to get a job.
Found on Indeed · Posted 1 weeks ago