69 Network Administration jobs in Johannesburg

Reference: JHB -DS-1
Location: Illovo, Johannesburg

A dynamic and successful ISP is looking for a Super-star Network Support Engineer to join their awesome team. Support Engineers are their professional technical resources responsible for providing first-class support to a wide range of customers, across multiple platforms. It is a busy and exciting working environment and they offer lots of growth and development.

Requirements:

• Proficiency in network routing and switching protocols (e.g., BGP, OSPF, VLANs, STP) and voice technologies such as VoIP, SIP, and unified communications.
• Strong understanding of network security principles and best practices, including firewall configuration, VPN implementation, and threat mitigation strategies.
• Hands-on experience with network and voice hardware and software from leading vendors, such as Cisco, Juniper, Avaya, Microsoft, and others.
• Excellent analytical and problem-solving skills, with the ability to troubleshoot complex network and voice issues and drive resolution to completion.
• Outstanding communication and interpersonal skills, with the ability to effectively communicate technical concepts to non-technical stakeholders and influence decision-making.
• Demonstrated leadership abilities, with a proven track record of successfully leading network and voice projects and delivering exceptional results for clients.
• Ability to work independently, manage multiple client engagements concurrently, and thrive in a dynamic, client-focused environment.
• Availability for occasional travel to client sites and participation in after-hours support and on-call rotations as needed.

Qualifications:

• Tertiary qualification: Degree/Diploma
• Relevant certifications such as CCNP (Cisco Certified Network Professional) is highly desirable
• CCVP (Cisco Certified Voice Professional), or equivalent is highly desirable

R 20 000 - R 30 000 - Monthly

Reference: JHB -DS-1
Location: Illovo, Johannesburg

A dynamic and successful ISP is looking for a Super-star Network Support Engineer to join their awesome team. Support Engineers are their professional technical resources responsible for providing first-class support to a wide range of customers, across multiple platforms. It is a busy and exciting working environment and they offer lots of growth and development.

Requirements:

• Proficiency in network routing and switching protocols (e.g., BGP, OSPF, VLANs, STP) and voice technologies such as VoIP, SIP, and unified communications.
• Strong understanding of network security principles and best practices, including firewall configuration, VPN implementation, and threat mitigation strategies.
• Hands-on experience with network and voice hardware and software from leading vendors, such as Cisco, Juniper, Avaya, Microsoft, and others.
• Excellent analytical and problem-solving skills, with the ability to troubleshoot complex network and voice issues and drive resolution to completion.
• Outstanding communication and interpersonal skills, with the ability to effectively communicate technical concepts to non-technical stakeholders and influence decision-making.
• Demonstrated leadership abilities, with a proven track record of successfully leading network and voice projects and delivering exceptional results for clients.
• Ability to work independently, manage multiple client engagements concurrently, and thrive in a dynamic, client-focused environment.
• Availability for occasional travel to client sites and participation in after-hours support and on-call rotations as needed.

Qualifications:

• Tertiary qualification: Degree/Diploma
• Relevant certifications such as CCNP (Cisco Certified Network Professional) is highly desirable
• CCVP (Cisco Certified Voice Professional), or equivalent is highly desirable

R 20 000 - R 30 000 - Monthly

Reference: JHB -HLG-3
Location: Illovo, Johannesburg

A leading ISP is looking for an experienced Snr Network/Voice Support Engineer to join their dynamic team. Support Engineers are their professional technical resources responsible for providing first-class support to a wide range of customers, across multiple platforms. It is a busy and exciting working environment, and they offer lots of growth and development.

Experience required:

• Proficiency in network routing and switching protocols (e.g., BGP, OSPF, VLANs, STP) and voice technologies such as VoIP, SIP, and unified communications.
• Strong understanding of network security principles and best practices, including firewall configuration, VPN implementation, and threat mitigation strategies.
• Hands-on experience with network and voice hardware and software from leading vendors, such as Cisco, Juniper, Avaya, Microsoft, and others.
• Excellent analytical and problem-solving skills, with the ability to troubleshoot complex network and voice issues and drive resolution to completion.
• Outstanding communication and interpersonal skills, with the ability to effectively communicate technical concepts to non-technical stakeholders and influence decision-making.
• Demonstrated leadership abilities, with a proven track record of successfully leading network and voice projects and delivering exceptional results for clients.
• Technical Support: Provide expert-level technical support and troubleshooting assistance to clients or internal teams on networking infrastructure components, including routers, switches, firewalls, and wireless access points.
• Diagnose and resolve network connectivity issues, performance problems, and security vulnerabilities promptly and efficiently.
• Analyze network traffic patterns and performance metrics to identify potential bottlenecks, anomalies, or areas for optimization.
• Collaborate with clients, network administrators, and other stakeholders to understand requirements, troubleshoot problems, and implement effective solutions.
• Availability for occasional travel to client sites and participation in after-hours support and on-call rotations as needed.

• Tertiary qualification: Degree/Diploma
• CCNP (Cisco Certified Network Professional) preferred
• CCVP (Cisco Certified Voice Professional), or equivalent preferred

R 30 000 - R 40 000 - Monthly

• Linux System Administration
• Install and configure Linux systems
• Perform system maintenance, upgrades, and patching
• Create system backups and monitor system performance
• System Security
• Configure and maintain system security and hardening
• Conduct OS vulnerability assessment and remediation
• System Maintenance
• Configure and maintain LVM, filesystems, and server hardware
• Provide technical support and guidance to teams
• Vendor Management
• Coordinate with vendors for hardware and software support
  
  

• 6+ years of experience with RedHat Linux
• Expertise in Linux system administration, security, and performance tuning
• Strong understanding of system configuration, maintenance, and troubleshooting
  
  

• Experience with system security, vulnerability assessment, and remediation
• Strong communication and vendor management skills
  
  

Jobob Title: System Administrator

Location: Johannesburg, South Africa

Role Description:

We're seeking an experienced System Administrator to join our team in Johannesburg, South Africa. As a key member of our technical team, you'll be responsible for installing, configuring, and maintaining Linux systems, ensuring system security, performance, and reliability.

Key Responsibilities:

1. Linux System Administration

- Install and configure Linux systems

- Perform system maintenance, upgrades, and patching

- Create system backups and monitor system performance

2. System Security

- Configure and maintain system security and hardening

- Conduct OS vulnerability assessment and remediation

3. System Maintenance

- Configure and maintain LVM, filesystems, and server hardware

- Provide technical support and guidance to teams

4. Vendor Management

- Coordinate with vendors for hardware and software support

Essential Skills:

- 6+ years of experience with RedHat Linux

- Expertise in Linux system administration, security, and performance tuning

- Strong understanding of system configuration, maintenance, and troubleshooting

Desirable Skills:

- Experience with system security, vulnerability assessment, and remediation

- Strong communication and vendor management skills

How to Apply:

If you're a skilled System Administrator with a passion for Linux and system security, please share your resume with Sonia Sharma at Title: System Administrator

InfyStrat is seeking a knowledgeable and experienced Linux System Administrator to join our dynamic IT team. In this role, you will be responsible for managing and maintaining our Linux-based systems and ensuring their optimal performance and security. You will work closely with other IT professionals and stakeholders to provide support, troubleshoot issues, and implement best practices for system administration. The ideal candidate will have a strong background in Linux administration, a proactive approach to problem-solving, and excellent communication skills. InfyStrat values innovation and collaboration, and we are looking for someone who is eager to contribute to our mission of delivering high-quality solutions.

Responsibilities

• Install, configure, and maintain Linux servers and applications
• Monitor system performance, troubleshoot issues, and perform necessary upgrades and patches
• Implement security measures and ensure system compliance with organizational policies
• Automate routine tasks using scripting languages and configuration management tools
• Manage user accounts, permissions, and access control
• Backup and restore data and develop disaster recovery plans
• Collaborate with development and DevOps teams to support application deployment and optimization
• Document system configurations, procedures, and best practices
  
  

• Bachelor's degree in Computer Science, Information Technology, or a related field
• 5+ years of experience in Linux system administration
• Strong expertise in Red Hat, CentOS, or Ubuntu distributions
• Proficient in shell scripting and automation tools (e.g., Ansible, Puppet, Chef)
• Experience with networking concepts and system security practices
• Excellent problem-solving skills and attention to detail
• Strong communication skills and ability to work collaboratively in a team environment
• Certifications such as RHCE or LPIC are a plus

InfyStrat is seeking a knowledgeable and experienced Linux System Administrator to join our dynamic IT team. In this role, you will be responsible for managing and maintaining our Linux-based systems and ensuring their optimal performance and security. You will work closely with other IT professionals and stakeholders to provide support, troubleshoot issues, and implement best practices for system administration. The ideal candidate will have a strong background in Linux administration, a proactive approach to problem-solving, and excellent communication skills. InfyStrat values innovation and collaboration, and we are looking for someone who is eager to contribute to our mission of delivering high-quality solutions.

• Install, configure, and maintain Linux servers and applications.
• Monitor system performance, troubleshoot issues, and perform necessary upgrades and patches.
• Implement security measures and ensure system compliance with organizational policies.
• Automate routine tasks using scripting languages and configuration management tools.
• Manage user accounts, permissions, and access control.
• Backup and restore data and develop disaster recovery plans.
• Collaborate with development and DevOps teams to support application deployment and optimization.
• Document system configurations, procedures, and best practices.

• Bachelor's degree in Computer Science, Information Technology, or a related field.
• 5+ years of experience in Linux system administration.
• Strong expertise in Red Hat, CentOS, or Ubuntu distributions.
• Proficient in shell scripting and automation tools (e.g., Ansible, Puppet, Chef).
• Experience with networking concepts and system security practices.
• Excellent problem-solving skills and attention to detail.
• Strong communication skills and ability to work collaboratively in a team environment.
• Certifications such as RHCE or LPIC are a plus.