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Manager, Voice Architecture and System Support

Salary undisclosed

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Job Overview: We are seeking an experienced Senior VoIP Engineer to design, implement, and maintain our Asterisk-based VoIP infrastructure. The ideal candidate will have deep expertise in VoIP protocols, PBX systems, SIP trunking, and Voice security. You will play a critical role in optimizing communication systems, troubleshooting complex VoIP issues, and ensuring high-quality voice services. Key Responsibilities: Design, configure, and maintain VoIP infrastructure including Asterisk-Based IP PBX, SIP trunks, and gateways. Troubleshoot and resolve complex VoIP and network issues related to call quality, latency, and jitter. Design and configure SIP trunks, call routing, and dial plans for high availability and scalability. Implement and maintain SIP, RTP, QoS, WebRTC and other VoIP-related protocols. Ensure VoIP security by mitigating threats such as toll fraud, SIP attacks, and DoS. Integrate VoIP systems with CRM, contact centre platforms, and other enterprise applications. Monitor system performance and conduct capacity planning for scaling VoIP infrastructure. Monitor and maintain VoIP infrastructure uptime, redundancy, and failover mechanisms. Collaborate with network engineers to ensure seamless VoIP and data network operations. Develop and maintain technical documentation, SOPs, and VoIP architecture diagrams. Analyze and troubleshoot SIP signaling, media flow, and VoIP performance issues. Optimize call quality, latency, and jitter using QoS, network tuning, and codec selection. Implement TLS, SRTP, and SBCs to secure voice communications. Conduct penetration testing, fraud detection, and prevention measures. Ensure compliance with industry regulations (HIPAA, PCI-DSS, GDPR, etc.) where applicable. Provide technical leadership and mentorship to junior VoIP engineers. Required Skills & Qualifications: Degree in Information Technology and Certifications in VoIP, Open-Source PBX system. 7+ years of hands-on experience in Asterisk-based VoIP engineering and network administration. Expertise in SIP, RTP, H.323, MGCP, and other VoIP protocols. Experience on installing and maintaining IPPBX systems such as Asterisk, FreePBX and any open-source systems. Strong knowledge of SIP trunking, call routing, and VoIP codecs (G.711, G.729, Opus, etc.). Understanding of firewalls, NAT, VPN, VLANs, and network security for VoIP. Familiarity with cloud-based VoIP solutions (Nice, Genesys, AWS Chime, Zoom Phone, etc.). Hands-on experience with Wireshark, tcpdump, and VoIP monitoring tools. Knowledge of Linux and scripting (Bash, Python) for automation is a plus. Knowledge of networking (TCP/IP, VLANs, VPN, QoS, NAT, firewall rules, SBCs)