L3 Systems Engineer

Chosen Online Pty Ltd; Cape Town; Hybrid; ZAR 558,000 - 781,000; Full time

Job summary

Chosen Online Pty Ltd in Cape Town is seeking a Senior Systems Engineer / L3 Support Engineer to own escalations, lead complex projects and act as a trusted technical advisor for clients. You’ll work across Microsoft 365 & Azure, security, governance, networking, Windows Server/AD, and cloud migrations with a focus on security hardening and resilience.

This is a hands-on, client-facing role for specialists.

Qualifications

• 5+ years in senior infrastructure/MSP environments.
• 3+ years supporting Microsoft 365.
• Strong Azure/Entra ID/Intune capability.
• Windows Server, AD, DNS & DHCP.

Responsibilities

• Own escalations and lead projects.
• Resolve complex environments and provide trusted technical advice to clients.
• Mentor L1/L2 engineers and collaborate with cross-functional teams.

Skills

Microsoft 365

Azure

Security

Networking

Windows Server

Active Directory

FortiGate

Ubiquiti

Cisco

PowerShell

Tools

FortiGate

Ubiquiti

Cisco

Active Directory

Job description

Senior Systems Engineer / L3 Support Engineer

Cape Town preferred | Other locations considered

R50,000 – R70,000+ per month depending on experience

Are you the engineer everyone calls when L1 and L2 have run out of answers?

This is NOT a helpdesk role.

We’re looking for a seriously strong L3 Engineer who can take ownership of complex environments, solve the problems others can’t, lead technical projects and confidently engage with clients as a trusted technical advisor.

You’ll work across:

• Microsoft 365 & Azure
• Security, governance & compliance
• Networking, firewalls, VPNs & connectivity
• Windows Server, AD, Hyper-V & VMware
• Conditional Access, MFA, Intune & EDR
• Exchange Online, SharePoint & Teams
• Cloud migrations & remediation projects
• Backup, DR & business continuity
• Technical roadmaps, governance & client strategy

WHO WE’RE HEADHUNTING

• 5+ years in senior infrastructure/MSP environments
• 3+ years supporting Microsoft 365
• Strong Azure / Entra ID / Intune capability
• Windows Server, Active Directory, DNS & DHCP
• FortiGate, Ubiquiti and/or Cisco experience
• Security hardening, MFA & Conditional Access
• Experience managing multiple client environments
• Ability to own escalations and lead projects
• Strong client-facing communication skills
• Ability to mentor L1/L2 engineers

BIG PLUS

Azure/Microsoft Security certifications, Fortinet/NSE, CCNA, PowerShell, Defender, Sentinel, ISO 27001, RMM/PSA platforms or AI/Copilot exposure.

We want someone who is technically exceptional, commercially aware and accountable — not someone who simply closes tickets.

Ready to step into a role where you can become a senior technical authority?