L3 Senior Server Support Engineer

Network Recruitment; Johannesburg; On-site; ZAR 420,000 - 620,000; Full time

Job summary

Network Recruitment in Johannesburg is seeking a Tier 3 Engineer to handle advanced technical issues across infrastructure, networks, and applications, collaborating with internal teams, vendors, and stakeholders to deliver long-term solutions.

You will work on incident resolution, root cause analysis, system performance optimization, security best practices, and mentoring junior engineers while contributing to strategic IT initiatives.

Qualifications

• Based in Johannesburg with proximity to Sunninghill.
• Own reliable transport for client site visits.
• Legal eligibility to work in South Africa.

Responsibilities

• Provide advanced troubleshooting and resolution of complex IT incidents.
• Conduct root cause analysis (RCA) and implement permanent fixes.
• Support and optimize infrastructure, networks, and systems performance.
• Manage critical escalations and liaise with external vendors when required.
• Ensure system uptime, stability, and performance improvements.
• Drive security best practices, including patching and vulnerability management.
• Contribute to documentation, knowledge sharing, and mentoring of junior engineers.
• Participate in strategic IT initiatives such as automation and system upgrades.

Skills

Tier 3 IT support

Advanced troubleshooting

Performance monitoring

Job description

Sunninghill, Johannesburg

Office-based (08:00 17:00)

As a Tier 3 Engineer, you will handle advanced technical issues across infrastructure, networks, and applications, while collaborating with internal teams, vendors, and stakeholders to deliver long-term solutions.

Key Responsibilities:

• Provide advanced troubleshooting and resolution of complex IT incidents
• Conduct root cause analysis (RCA) and implement permanent fixes
• Support and optimize infrastructure, networks, and systems performance
• Manage critical escalations and liaise with external vendors when required
• Ensure system uptime, stability, and performance improvements
• Drive security best practices, including patching and vulnerability management
• Contribute to documentation, knowledge sharing, and mentoring of junior engineers
• Participate in strategic IT initiatives such as automation and system upgrades

Key Skills & Experience:

• Proven experience in a Tier 3 / Level 3 IT support or infrastructure role
• Strong expertise in advanced troubleshooting across networks, servers, and applications
• Solid understanding of system performance, monitoring, and optimization

Requirements:

• Based in Johannesburg (preferably within close proximity to Sunninghill)
• Own reliable transport (client site visits required)
• Must have legal eligibility to work in South Africa

What Success Looks Like:

• Reduced incident resolution times (MTTR)
• Improved system uptime and performance
• Effective root cause analysis and permanent issue resolution
• Strong contribution to team knowledge and continuous improvement
• Positive customer and stakeholder feedback

Why Join Us?

• Work on complex, high-impact technical challenges
• Be part of a collaborative and forward-thinking IT team
• Opportunity to contribute to strategic IT projects and innovation