Credgenics - Dialer Engineer - Asterisk Implementation

13 hours ago


Noida, India ANALOG LEGAL HUB TECHNOLOGY SOLUTIONS PVT LTD Full time

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 ResponsibilitiesDialer 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 & 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. (ref:hirist.tech)



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