Credgenics- Dialer Engineer/sip Engineer

5 days ago


Noida Uttar Pradesh, India NextHire Full time

About the Role 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 Bachelor s or Master s 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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