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Job Description

Description

Job Title :

VoIP Developer (5+ Years Experience)We are looking for an experienced VoIP Developer with strong expertise in SIP-based communication systems and IMS architecture.

Key Responsibilities

  • Develop and maintain VoIP applications and SIP-based solutions.
  • Work with Asterisk / FreeSWITCH / Kamailio / OpenSIPS.
  • Handle call flows, SIP signaling, Diameter protocol, and system integrations.
  • Troubleshoot call quality, routing, and network issues.
  • Build APIs and integrations with PBX, CRM, and external systems.
  • Optimize system performance, SIP trunks, and routing logic.

Required Skills

  • 5+ years of VoIP development experience.
  • Strong in C programming, SIP, Kamailio, Diameter, Redis.
  • Good understanding of IMS architecture.
  • Experience with RTP, WebRTC, and real-time communication.
  • Linux administration and networking fundamentals.
  • Knowledge of REST APIs and databases (MySQL/PostgreSQL).

Good To Have

  • WebRTC development.
  • Docker/Kubernetes, AWS/GCP.
  • Tools like Sipp, Wireshark, Homer.
(ref:hirist.tech)

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