Job Overview
We're looking for an Asterisk Developer with deep, hands-on expertise in the Asterisk stack — not just dialplan configuration, but building and scaling call-control applications on top of it. You'll own call flows end-to-end: designing routing logic, building integrations via ARI/AMI/AGI, debugging SIP and media issues down to the packet, and working with our infrastructure team to keep the platform scalable and highly available.
Key Responsibilities
Design, develop, and maintain Asterisk-based call-control applications and platforms.
Build call-control logic using ARI (stasis applications, channel/bridge/playback control), AMI (event handling, originate, real-time state), and AGI/FastAGI (persistent-process AGI servers, not just per-call scripts).
Develop and maintain dialplans, contexts, extensions, queues, IVRs, conferences (ConfBridge), and inbound/outbound routing.
Configure and troubleshoot PJSIP endpoints, SIP trunks, DID/DDI routing, caller ID/CLI handling, and number translation.
Diagnose SIP signalling and media problems — one-way audio, no audio, call drops,



early disconnects, registration and NAT failures, codec mismatches, DTMF issues — using SIP logs, pjsip CLI, PCAPs, Wireshark, and tcpdump.
Integrate Asterisk with REST APIs, databases, CRMs, and AI/voice platforms (ASR, TTS, LLM-driven voice agents) over WebSockets and external media channels.
Implement call recording, CDR/CEL pipelines, and call-detail processing and reporting.
Own capacity planning and scaling of the Asterisk layer: horizontal scaling, load distribution across nodes, registration/media distribution, failover, and graceful drain during deploys.
Define infrastructure requirements and guide the infrastructure/DevOps team on sizing, networking, firewall/NAT, media port ranges, and deployment topology.
Handle production incidents and lead root-cause analysis.
Write and maintain technical documentation for call flows, configurations, and troubleshooting runbooks.
Required Sk

📌 Asterisks Developer (Bengaluru)
🏢 CC33 Global
📍 Bengaluru