South Africa: Senior Asterisk Architect & VoIP Infrastructure Lead posted by abc worldwide

Location: Delhi India
Department: IT Infrastructure / Telephony
Reports To: CTO
Experience Required: 15+ Years
Employment Type: Full-Time

Position Summary:

We are seeking a seasoned Asterisk Architect and VoIP Infrastructure Expert with over 15 years of hands-on experience in designing, implementing, and managing enterprise-grade telephony systems. The ideal candidate will have led the deployment of Asterisk-based PBX systems for contact centers exceeding 1,000 seats, with proven expertise in scalability, redundancy, performance tuning, and integrations with CRM, Dialers, and AI-based tools.

Key Responsibilities:

• Design & Architecture:
  Architect and design high-availability, scalable, and secure Asterisk VoIP systems supporting 1,000+ concurrent agents across multiple geographies.
• Deployment & Configuration:
  Lead deployment and configuration of Asterisk (and related modules like FreePBX, Vicidial, etc.), ensuring optimal performance and minimal downtime.
• System Integration:
  Integrate Asterisk with third-party systems such as CRMs, ERP platforms, Dialers, Speech Analytics engines, and AI-based Agent Assist tools.
• Monitoring & Optimization:
  Implement real-time monitoring, logging, call quality assessment, and performance optimization strategies.
• SLA Management:
  Ensure system uptime meets 99.99% availability with built-in failover, disaster recovery, and load balancing capabilities.
• Security & Compliance:
  Implement strong security protocols (SIP TLS, SRTP, firewalls) and ensure compliance with regional telecom and data protection regulations.
• Leadership & Mentorship:
  Lead a team of VoIP engineers and provide training, SOPs, and escalation handling support.
• Documentation & Reporting:
  Maintain up-to-date technical documentation, system diagrams, change logs, and capacity planning reports.

Required Skills & Qualifications:

• Minimum 15 years of experience in VoIP systems, with at least 10 years dedicated to Asterisk.
• Experience in setting up and managing enterprise-scale environments (1000+ seats).
• Deep understanding of SIP protocols, RTP, IAX2, dial plan scripting, AGI, AMI, and IVR design.
• Strong knowledge of Linux (CentOS/Ubuntu), MySQL/PostgreSQL, and network administration.
• Familiarity with load balancing, HAProxy, Kamailio/OpenSIPS, and clustering.
• Proficiency in integrating telephony with REST APIs, CRMs (e.g., Salesforce, Zoho), and cloud platforms (AWS, Azure).
• Experience with voice recording, call monitoring, reporting dashboards, and QoS metrics.
• Exposure to contact center workflows, predictive dialers, blended campaigns, and CTI connectors.
• Certifications in VoIP, Linux, or related technologies (optional but preferred).