Senior VoIP Systems Engineer

Placements24; Randburg; On-site; ZAR 900,000 - 1,300,000; Full time

Benefits offered by this job

Competitive salary package

Health and retirement benefits

Professional development and certs

Collaborative work environment in Rand

Job summary

Placements24 in Randburg, Gauteng, seeks an experienced Senior VoIP Systems Engineer to design, implement, and support a scalable VoIP infrastructure. You will maintain PBX systems, SBCs, and gateways, ensuring performance, security, and reliability for diverse clients.

The role requires deep VoIP expertise, strong networking and troubleshooting skills, and the ability to lead initiatives in a hands-on environment.

Qualifications

• Bachelor's degree or equivalent experience in CS/IT.
• Minimum of 5 years designing, implementing, and managing VoIP systems.
• In-depth knowledge of VoIP protocols (SIP, H.323, RTP, RTCP).
• Experience with VoIP platforms (Cisco CallManager, Asterisk, Avaya) and SBCs (Audiocodes, Metaswitch).
• Strong IP networking knowledge (TCP/IP, DNS, DHCP, QoS, firewalls).
• Relevant certifications like CCNP Voice are desirable.

Responsibilities

• Design, deploy, and manage VoIP systems including PBX, SBCs, and gateways.
• Monitor VoIP network performance; resolve call quality, latency, and jitter issues.
• Implement and maintain VoIP security measures to prevent unauthorized access and fraud.
• Configure and troubleshoot VoIP endpoints, softphones, and client devices.
• Develop and maintain documentation for VoIP systems and procedures.
• Collaborate with network engineers for seamless VoIP integration.
• Plan upgrades to VoIP infrastructure components.
• Provide technical support and training to end-users and staff.
• Stay updated on VoIP technologies, standards and best practices.

Skills

VoIP design

Network troubleshooting

Analytical thinking

Communication skills

Project leadership

Education

Bachelor's degree in Computer Science/IT

Tools

Cisco CallManager

Asterisk

Avaya

SBCs (Audiocodes, Metaswitch)

Job description

About the Role Our client, a leader in the telecommunications industry, is seeking an experienced Senior VoIP Systems Engineer for their operations in Randburg, Gauteng . This role is essential for the design, implementation, maintenance, and support of our Voice over IP (VoIP) infrastructure. You will be responsible for ensuring the stability, scalability, and performance of our voice communication systems, serving a diverse range of clients. This is a hands‑on technical role requiring deep expertise in VoIP technologies, networking, and security. The ideal candidate will be a problem‑solver with a strong commitment to delivering high‑quality communication services and possess excellent troubleshooting skills. This is an excellent opportunity to take a leadership role in a critical area of telecommunications.

Key Responsibilities

• Design, deploy, and manage VoIP systems, including PBX, session border controllers (SBCs), and gateways.
• Monitor VoIP network performance, identify and resolve issues related to call quality, latency, and jitter.
• Implement and maintain VoIP security measures to protect against unauthorized access and fraud.
• Configure and troubleshoot VoIP endpoints, softphones, and related client devices.
• Develop and maintain documentation for VoIP systems, configurations, and operational procedures.
• Collaborate with network engineers and other IT teams to ensure seamless integration of VoIP services.
• Plan and execute upgrades to VoIP infrastructure components.
• Provide technical support and training to end‑users and support staff.
• Stay updated on the latest VoIP technologies, standards, and best practices.

Requirements

• Bachelor's degree in Computer Science, Information Technology, or a related field, or equivalent experience.
• Minimum of 5 years of experience in designing, implementing, and managing VoIP systems.
• In-depth knowledge of VoIP protocols such as SIP, H.323, RTP, and RTCP.
• Experience with VoIP platforms (e.g., Cisco CallManager, Asterisk, Avaya) and SBCs (e.g., Audiocodes, Metaswitch).
• Strong understanding of IP networking, including TCP/IP, DNS, DHCP, QoS, and firewall configurations.
• Experience with network monitoring tools and performance analysis.
• Excellent troubleshooting skills and the ability to diagnose complex communication issues.
• Strong analytical and problem‑solving abilities.
• Effective communication and interpersonal skills.
• Relevant certifications like CCNP Voice or equivalent are highly desirable.

Benefits

• Our client offers a competitive salary, comprehensive health and retirement benefits, opportunities for professional development and certifications, and a collaborative work environment in Randburg .
• This role provides the chance to work with advanced VoIP technologies and significantly impact the company's communication services.
• Join a leading telecom provider and advance your career.