Principal VoIP Network Engineer - Pretoria

Placements24; Pretoria; Hybrid; ZAR 1,200,000 - 1,800,000; Full time

Benefits offered by this job

Salary with performance bonuses

Health insurance

Career development opportunities

Job summary

Placements24 in South Africa seeks a seasoned Principal VoIP Network Engineer to design, deploy, and optimize large-scale VoIP networks in the Pretoria region. You will architect scalable systems, mentor engineers, and drive best practices across security, performance, and reliability.

You will lead cross-functional collaborations with telecom platforms, evaluate new VoIP technologies, and ensure high-quality voice services for a vast customer base.

Qualifications

• Master's degree in electrical or computer engineering or equivalent.
• 10+ years hands-on VoIP network design and operations.
• Deep expertise in SIP, H.323, RTP/RTCP.
• Experience with Cisco, Asterisk, SBCs, and related platforms.
• Strong problem solving, leadership and communication skills.

Responsibilities

• Architect, design, and deploy scalable VoIP networks and services.
• Lead integration of VoIP with existing and future platforms.
• Develop best practices for VoIP security, performance, and reliability.
• Troubleshoot complex VoIP issues including call quality and signaling.
• Perform capacity planning and network performance analysis for VoIP.
• Evaluate new VoIP technologies and vendors.
• Create and maintain documentation for VoIP designs and configurations.
• Mentor junior VoIP engineers and promote technical excellence.
• Collaborate with cross-functional teams to ensure service delivery.
• Stay current with industry trends and emerging VoIP technologies.

Skills

VoIP architecture

SIP/H.323/RTP/RTCP

Leadership

Mentoring juniors

Documentation

Education

Master's degree in Electrical Engineering or Computer Engineering

Tools

Wireshark

tcpdump

Cisco

Asterisk

SBCs

Job description

About the Role

Our client, a leading telecommunications innovator, is seeking a highly experienced Principal VoIP Network Engineer to join their expanding operations, with a focus on their Pretoria , Gauteng presence. This senior-level position is critical for the design, implementation, and optimization of our client's Voice over IP (VoIP) infrastructure. The successful candidate will be responsible for architecting scalable and resilient VoIP solutions, driving technological advancements, and mentoring junior engineers. This is a unique opportunity to influence the direction of cutting‑edge communication technologies in South Africa's administrative capital. You will be at the forefront of ensuring seamless, high‑quality voice communication services for a vast customer base, contributing significantly to the technical excellence of our client's services within the Pretoria region.

Key Responsibilities

• Architect, design, and deploy robust and scalable VoIP networks and services.
• Lead the integration of VoIP technologies with existing and future telecommunications platforms.
• Develop and implement best practices for VoIP network security, performance, and reliability.
• Troubleshoot complex VoIP issues, including call quality, signaling, and connectivity problems.
• Conduct performance analysis and capacity planning for VoIP infrastructure.
• Evaluate and recommend new VoIP technologies and vendors.
• Develop and maintain comprehensive documentation for VoIP network designs and configurations.
• Mentor and guide junior VoIP engineers, fostering a culture of technical excellence.
• Collaborate with cross-functional teams to ensure seamless service delivery.
• Stay updated on industry trends and emerging VoIP technologies.

Requirements

• Master's degree in Electrical Engineering, Computer Engineering, or a related field.
• 10+ years of hands‑on experience in designing, implementing, and managing large‑scale VoIP networks.
• Deep expertise in VoIP protocols such as SIP, H.323, RTP, and RTCP.
• Strong understanding of Cisco, Asterisk, or other leading VoIP platforms.
• Experience with network security principles as applied to VoIP (e.g., SRTP, TLS).
• Proficiency in network troubleshooting tools (e.g., Wireshark, tcpdump).
• Experience with call processing, media gateways, and SBCs.
• Excellent problem‑solving, analytical, and leadership skills.
• Strong communication and presentation abilities.
• Relevant certifications (e.g., Cisco Voice, CIPP) are a significant advantage.

Benefits

• Our client provides a highly attractive salary, comprehensive health insurance, substantial performance bonuses, and excellent opportunities for professional development and career advancement.
• This role is based in Pretoria , Gauteng , and offers a fully remote work arrangement, allowing for flexibility and work‑life balance.