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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-centre platform
• Experience with progressive or predictive autodialers
• Experience integrating Airtel, Jio, Vi or other enterprise SIP trunks
• Knowledge of multi-tenant SaaS architecture
• Understanding of call-detail records, call monitoring and voice analytics
• Familiarity with telecom security and Indian commercial-calling requirements
About ZentroDIAL:
ZentroDIAL is being developed as a carrier-independent, cloud-based communication platform providing:
• Cloud IVR
• Inbound and outbound contact centre
• Browser-based agent calling
• Autodialer and campaign management
• Call recording and monitoring
• Supervisor dashboards
• CRM integration
• Call analytics and AI-enabled quality monitoring
We are looking for someone who can contribute not only as an engineer but also as a technical partner in developing a scalable and reliable product.
Interested candidates and freelancers may share their profile, project experience, availability and commercial expectations at:
📧 manmohan.jha@zentroverse.com
📞 +91 97714 95587
🌐 Zentroverse Global Pvt. Ltd.
#Hiring #VoIPEngineer #FreeSWITCH #Asterisk #SIP #WebRTC #CloudTelephony #ContactCentre #AutoDialer #IVR #TelecomJobs #FreelanceOpportunity #PartTimeJobs #SaaSJobs #ZentroDIAL #Zentroverse
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