HiringCafe
Posted 5mo ago

Senior/Lead Asterisk Developer

@ IDT
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Warsaw or Georgia or Romania or Moldova or Serbia or Spain
HybridContract, Full Time
Responsibilities:design dialplans, debug core, analyze performance
Requirements Summary:7+ years of production experience with large-scale deployments; senior/lead Asterisk expertise; CI/CD, Linux, and networking; strong English.
Technical Tools Mentioned:Asterisk, SIP, Linux, AWS, C/C++, CI/CD, Git
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Job Description
We’re looking for a Senior/Lead Asterisk Developer to help us build and scale a cloud PBX solution based on Asterisk.

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

Your daily duties will include implementing different SIP proxy 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.

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


We’re looking for a Senior/Lead Asterisk Developer to help us build and scale a cloud PBX solution based on Asterisk.

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

Your daily duties will include implementing different SIP proxy 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.

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





In this role, you will also:
  • Design and implement advanced Asterisk dialplans.
  • Debug and fix issues inside Asterisk core, modules, and C-based extensions.
  • Analyze and interpret stack traces, crashes, memory issues, and performance bottlenecks.
  • Implement patches, backports, or enhancements directly in Asterisk source code.
  • Develop custom modules (C/C++), when needed.
  • Apply deep understanding of SIP signaling, RTP, SDP negotiation, codecs, and NAT traversal.
  • Troubleshoot SIP flows.
  • Work with trunk groups, carriers, PSTN routing, and failover logic.
  • Work with Linux systems (systemd, networking, tuning, kernel parameters).
  • Work with Asterisk in cloud environments (AWS preferred).Participate in architecture decisions for resilient and scalable telephony clusters.


    • Join us if you:
  • Have at least 7+ years of production experience with large-scale deployments (call servers with 60k+ active users).
  • Have contributions in https://github.com/asterisk/asterisk/.
  • Have experience with CI/CD, clouds, Linux & networking.
  • Have a good level of English (B2 or higher).
  • (For Lead level) Are ready to act as the technical lead for the Asterisk domain.
  • (For Lead level) Can work cross-team with backend developers, infra/DevOps, QA, and product owners.
  • (For Lead level) Own best practices, code quality, and documentation.


    • We are offer:
  • Remote work flexibility – work from anywhere.
  • B2B contract with competitive gross compensation in USD.
  • Top-tier hardware to support your productivity.
  • A challenging role in a team of skilled professionals.
  • Continuous learning and career growth opportunities.
  • Coverage for professional development: training, seminars, and conferences.
  • Access to high-quality English lessons.