Senior VoIP Architect: SBCs, QoS & Unified Communications

Placements24; Mbombela (Nelspruit); On-site; ZAR 900,000 - 1,200,000; Full time

Benefits offered by this job

Health insurance

Annual leave

Retirement savings plan

Access to latest VoIP technologies

Professional certifications training

Job summary

Placements24 is seeking a Senior VoIP Systems Engineer in Nelspruit, Mpumalanga to design, implement, and manage scalable VoIP solutions. You will lead deployment of PBX, SBCs, and IP telephony devices while troubleshooting complex voice issues and ensuring QoS across networks.

The role requires 5–7 years of hands-on VoIP experience, strong knowledge of SIP/H.323/RTP, and experience with Asterisk, Cisco CallManager, Avaya, and UC platforms. Telecoms industry background is essential.

Qualifications

• Bachelor’s degree in Computer Science, Engineering, Telecommunications, or related field.
• 5–7 years of hands-on VoIP system design, implementation, and administration.
• In-depth knowledge of SIP, H.323, and RTP.
• Experience with PBX platforms such as Asterisk, Cisco CallManager, and Avaya.
• Strong IP networking, including TCP/IP, VLANs, QoS, and firewalls.
• Experience with UC platforms like Microsoft Teams and Cisco Webex.
• Certifications such as CompTIA Voice+, CCVP, CCNP Voice are a plus.
• Experience in the telecoms industry required.

Responsibilities

• Design, deploy, and maintain VoIP infrastructure, including PBX systems, gateways, and session border controllers (SBCs).
• Configure and manage IP telephony devices, softphones, and unified communications platforms.
• Troubleshoot complex VoIP issues, including call quality problems, call routing failures, and SIP trunking issues.
• Develop and implement network configurations to support VoIP services, ensuring QoS and security.
• Monitor system performance and proactively identify and resolve potential issues.
• Collaborate with network engineers and IT teams to ensure seamless integration of voice and data networks.
• Create and maintain comprehensive documentation for VoIP systems and configurations.
• Stay up-to-date with the latest advancements in VoIP and unified communications technology.
• Provide technical support and guidance to junior engineers and end-users.
• Participate in capacity planning and system upgrade projects.

Education

Bachelor's degree in Computer Science, Engineering, Telecommunications, or related field

Tools

Asterisk

Cisco CallManager

Avaya

Oracle/Acme Packet

AudioCodes

Job description

Placements24 is seeking a Senior VoIP Systems Engineer in Nelspruit, Mpumalanga to design, implement, and manage scalable VoIP solutions. You will lead deployment of PBX, SBCs, and IP telephony devices while troubleshooting complex voice issues and ensuring QoS across networks.

The role requires 5–7 years of hands-on VoIP experience, strong knowledge of SIP/H.323/RTP, and experience with Asterisk, Cisco CallManager, Avaya, and UC platforms. Telecoms industry background is essential.