We’re Hiring: VoIP Engineer Zentroverse Global Pvt. Ltd., a startup-qualified technology company developing SaaS, CRM, AI-enabled customer engagement and business automation solutions, is looking for an experienced VoIP Engineer to help us build ZentroDIAL—our own own cloud-based IVR, autodialer and BPO contact-centre platform. Position: VoIP Engineer Experience: 3–5 years Engagement: Full-time / Part time / Freelance Location: Patna / Remote / Hybrid Key Responsibilities: • Design and develop ZentroDIAL’s cloud telephony architecture • Configure and manage FreeSWITCH or Asterisk • Integrate SIP trunks from Indian telecom operators • Develop inbound and outbound calling systems • Configure IVR, call queues and skill-based routing • Implement preview, progressive and power dialers • Support development of predictive-dialer functionality • Integrate WebRTC-based calling into the agent web panel • Implement call recording, hold, transfer and conference calling • Integrate real-time call events with ZentroFLOW CRM • Configure Kamailio/OpenSIPS,



SBC and SIP security • Diagnose call failures, one-way audio, latency, echo and dropped calls • Monitor call quality, concurrent channels and telecom connectivity • Support carrier failover, scalability and production deployment Required Skills: • Strong hands-on experience with FreeSWITCH and/or Asterisk • Good understanding of SIP, RTP, WebRTC and VoIP protocols • Experience with SIP-trunk and IP-PBX integration • Knowledge of Kamailio, OpenSIPS or similar SIP-routing technologies • Experience with SIP.js or JsSIP for browser-based calling • Understanding of Coturn/TURN, NAT, firewalls and audio codecs • Experience with call queues, IVR, recordings and dialer systems • Working knowledge of Linux and cloud environments • Familiarity with Wireshark, SIPp and SIP troubleshooting • Ability to integrate telephony systems with APIs, CRMs and web applications Preferred Qualifications: • Previous experience developing a BPO/contact-cen

📌 Voip Engineer (Bihar)
🏢 ZENTROVERSE GLOBAL PRIVATE
📍 Bihar