Senior Network Infrastructure Engineer – Security & Uptime

Placements24; Pretoria; On-site; ZAR 600,000 - 900,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

Retirement savings plan with company匹配

Certification reimbursement

Paid time off

Access to latest technology

Job summary

Placements24 is seeking a skilled Network Infrastructure Specialist to join its Pretoria-based operations team. The role focuses on designing, implementing, maintaining, and optimizing the company’s network to ensure high availability and performance.

You will work with enterprise hardware from Cisco/Juniper/HP, manage LAN/WAN and wireless networks, implement security measures, monitor performance, and contribute to disaster recovery planning.

Qualifications

• Bachelor's degree in CS/IT or equivalent practical experience.
• Minimum 5 years of network administration and infrastructure management.
• Strong knowledge of TCP/IP, DNS, DHCP, VLANs, and routing protocols.
• Hands-on experience with enterprise-level network hardware from Cisco/Juniper/HP.
• Proficiency in network security principles and technologies.
• Experience with network monitoring tools such as Nagios or Zabbix.
• Certifications such as CCNA/CCNP or equivalent are desirable.
• Excellent analytical, problem-solving, and diagnostic skills.
• Strong communication and interpersonal skills.

Responsibilities

• Design, implement, and manage LANs, WANs, and wireless networks.
• Configure and maintain routers, switches, firewalls, and access points.
• Monitor network performance and troubleshoot connectivity issues, ensuring uptime.
• Implement and manage network security measures, including IDS/IPS.
• Develop and maintain network 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.

Skills

Network administration

LAN/WAN management

Network security

Troubleshooting

TCP/IP/DNS/DHCP

CCNA/CCNP

Education

Bachelor's degree in CS/IT or equivalent

Tools

Nagios

Zabbix

Cisco hardware

Juniper hardware

HP hardware

Job description

Placements24 is seeking a skilled Network Infrastructure Specialist to join its Pretoria-based operations team. The role focuses on designing, implementing, maintaining, and optimizing the company’s network to ensure high availability and performance.

You will work with enterprise hardware from Cisco/Juniper/HP, manage LAN/WAN and wireless networks, implement security measures, monitor performance, and contribute to disaster recovery planning.