Technical Support Lead - Voice & Unified Communications

Elite Search and Selection; Johannesburg; Remote; ZAR 300,000 - 400,000; Full time

Job summary

A leading recruitment firm in Johannesburg is seeking an experienced VoIP/SIP Support Specialist. You will manage advanced support tasks, troubleshoot critical voice issues, and collaborate with a global team. Candidates should have over 7 years in VoIP and SBC environments, with excellent communication skills and strong knowledge of SIP and Microsoft Teams. This role offers a remote-first work culture and extensive training opportunities.

Benefits

Ongoing training and development

Collaborative team culture

Flexibility with structure

Qualifications

• 7+ years in VoIP, SIP, SBCs, and telecom environments.
• Advanced understanding of SIP, RTP, and media diagnostics.
• Strong experience with SBCs and Microsoft Teams Direct Routing.

Responsibilities

• Own escalations and advanced L2 / L3 support for SIP and SBCs.
• Dive deep into SIP traces and logs to resolve critical issues.
• Collaborate with engineers for deployments and optimizations.

Skills

VoIP

SIP

SBCs

Communication skills

Tools

Wireshark

Microsoft Teams

Job description

Responsibilities

• Own escalations and advanced L2 / L3 support for SIP, SBCs, and Teams Direct Routing.
• Dive deep into SIP traces, logs, and packet captures to resolve critical voice issues.
• Configure and troubleshoot SBCs (AudioCodes, Ribbon, etc.) and Class 4 switching environments.
• Collaborate with delivery engineers to support deployments, transitions, and optimizations.
• Act as a trusted advisor to clients — both in reactive troubleshooting and proactive consultations.
• Champion technical excellence by mentoring the support team and refining diagnostics processes.

Requirements

• 7+ years in VoIP, SIP, SBCs, and carrier-grade telecom environments.
• Advanced understanding of SIP, RTP, NAT traversal, and media path diagnostics.
• Strong hands-on experience with SBCs (AudioCodes, Ribbon, Oracle, etc.) and Microsoft Teams Direct Routing.
• Exposure to Azure networking, virtualized voice infrastructure, and hybrid UC environments.
• Strong command of tools like Wireshark, SIP logs, syslog, CLI.
• Excellent English communication and documentation skills.

Added advantage

• SSCA, AudioCodes / Ribbon, Microsoft (AZ-, MS-) certifications.
• Experience with Kamailio, PCI-DSS compliant IVR integrations, or contact center platforms (e.g. Genesys, Five9).
• Familiarity with PBX systems (Asterisk / FreePBX) and voice observability tools.

On offer

• Collaborative, global team culture with engaging peer support across time zones.
• Remote-first environment with Johannesburg roots — flexibility with structure.
• Ongoing training and development with highly talented leadership that loves to share knowledge.
• A chance to work on cutting-edge telecom platforms that impact global users.

Ready to lead from the front and troubleshoot what others can’t?

Apply now and bring your deep technical voice expertise to a role where your insights truly matter.