IDT Corporation
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.
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.
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).
