Credgenics - Dialer Engineer - Asterisk Implementation

4 days ago

Noida, Uttar Pradesh, India ANALOG LEGAL HUB TECHNOLOGY SOLUTIONS PVT LTD Full time ₹ 12,00,000 - ₹ 24,00,000 per year

Description :

We are looking for an experienced Dialer Engineer / SIP Engineer who has deep expertise in setting up and scaling VoIP-based contact center solutions using Asterisk or similar technologies. The ideal candidate should have hands-on experience in building inbound and outbound dialer systems from the ground up, with a strong grasp of SIP protocol, cloud infrastructure, and telephony integration best practices.

Key Responsibilities

Dialer Setup & Architecture :


- Design and implement scalable cloud-based inbound and outbound dialer architecture using Asterisk, Kamailio/OpenSIPS, and related tools.

- Lead the end-to-end setup of dialer systems including IVR, predictive/auto/manual dialing modes, and queue management.

SIP & Telephony :

- Deep understanding of SIP protocol, RTP, and VoIP call flows.

- Configure and troubleshoot SIP trunks, SBCs, media gateways, and NAT traversal issues.

- Optimize call routing, codec negotiation, DTMF handling, and failover.

System Engineering :


- Own the cloud deployment of dialer systems (AWS, GCP, or Azure) using containerization (Docker/Kubernetes preferred).

- Ensure high availability, performance monitoring, logging, and disaster recovery for dialer infrastructure.

- Collaborate with network and DevOps teams to fine-tune VoIP performance and reliability.

Compliance & Quality :

- Ensure the dialer adheres to compliance standards like DND, TRAI/DoT (India), TCPA (US), etc.

- Implement call recording, real-time monitoring, and post-call analytics systems.

Development & Integration :

- Work closely with backend and frontend developers to expose dialer APIs for CRM/agent

dashboards.

- Integrate with third-party telephony platforms (Tata, Airtel, Twilio, Exotel, etc.) and CRM

systems.

Troubleshooting & RCA :

- Perform in-depth debugging of call failures using PCAP traces, SIP logs, and Asterisk CLI.

- Provide root cause analysis and implement permanent fixes for recurring issues.

Requirements :


- 6 years of hands-on experience with Asterisk, Kamailio/OpenSIPS, FreeSWITCH, or similar VoIP systems

- Deep knowledge of SIP protocol, RTP, WebRTC, STUN/TURN, and NAT-related issues.

- Experience designing and deploying large-scale dialer systems on cloud infrastructure.

- Solid experience in Linux system administration and shell scripting.

- Familiarity with SBCs (e.g., Acme Packet, Sansay, Audiocodes) and SIP debuggers (sngrep,

Wireshark).

- Exposure to call center metrics, DNC lists, retry logic, concurrency management.

- Experience with REST APIs, MySQL/Postgres, and message queues (RabbitMQ/Kafka) is a plus.

- Bonus : Experience with voice biometrics, conversational IVR, AI-based call scoring.

Preferred Qualifications :

- Bachelors or Masters degree in Computer Science, Electronics, or a related field.

- VoIP certifications (dCAP, CCVP, etc.) are a plus.

- Prior experience working in fintech, edtech, or BPO-focused tech environments.

Why Join Us ?

- Opportunity to own and shape the telephony backbone of a high-growth product.

- Work with a team that values autonomy, innovation, and deep technical ownership.

- Be part of solving real business challenges through scalable communication infrastructure.

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