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DNA

VoIP Software Engineer (Asterisk)

DNA • BY
Java Hybrid
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IDT Corporation is looking for a Middle VoIP Engineer with a focus on Asterisk.

The team is building a cloud PBX solution based on Kamailio and Asterisk (net2phone). We expect you to have strong problem-solving skills, be self-motivated, proactive, and responsible.

Your daily duties will include implementing PBX features using Asterisk with respect to high availability and scalability.

You are not limited to Asterisk; we welcome you to be involved in all parts of a large ecosystem built around Asterisk, Kamailio, RTPEngine, Java, Kafka, MySQL, MongoDB, CDK, and GitHub Actions pipelines.

You will work with automated CI/CD processes and get a chance to improve your knowledge of SIP, cloud infrastructure, and networks.

We are looking for a person with:

  • At least 5 years of experience in Asterisk: you know what are UAC, UAS, PJSIP, channel, call park, blind/attendant transfer, etc.
  • Experience with Asterisk dialplan in Lua.
  • Solid SIP knowledge.
  • 3+ years experience in coding.
  • Experience in Linux environment.
  • Good level of English (B2 or higher).

    • Responsibilities:

  • High-Scale Asterisk: Build and maintain cloud PBX features within a large-scale ecosystem (60k+ users) using Asterisk, Kamailio, and RTPEngine.
  • Advanced Dialplan Development: Design and implement complex telephony logic specifically using Asterisk dialplans in Lua.
  • Deep Troubleshooting & Bug Fixing: Analyze stack traces and performance bottlenecks to fix bugs in Asterisk source code and contribute to the community.
  • Protocol & SIP Proxy Management: Manage complex SIP/RTP flows, SDP negotiation, and NAT traversal for resilient and scalable telephony clusters.
  • System Maintenance & Reliability: Optimize Linux environments, manage PSTN routing/failover, and participate in on-duty rotations to resolve outages.

    • What We Offer:

  • Remote b2b or hybrid / remote (Belarus-Moldova) work opportunity!

  • Stable job with long-term growth perspective.

  • Competitive salary with annual performance review.

  • Really good hardware.

  • An exciting and challenging job with talented people around.

  • Continuous learning and career growth opportunities.

  • Compensation for professional training, seminars, and conferences.

  • Referral program – get rewarded for helping us grow the team with talented people.

  • Company-supported English classes to enhance your professional growth.

  • More perks for the Minsk and Chisinau office employees.

    • Apply Now