Remote Senior Asterisk Engineer — Cloud PBX & SIP

Idt; Warszawa; On-site; PLN 453,858 - 680,787; Full time

Benefits offered by this job

Remote work flexibility

Career growth opportunities

Job summary

Idt is seeking a Senior/Lead Asterisk Developer to build and scale a cloud PBX solution based on Asterisk. You will design and implement advanced Asterisk dialplans, debug core issues, and contribute to a scalable telephony stack in a cloud environment.

The role requires 7+ years of production experience, contributions to the Asterisk project, strong CI/CD and Linux networking skills, and a lead-level ability to guide cross-functional teams. Remote work is supported worldwide.

Qualifications

• Minimum 7+ years of production experience with large-scale deployments (call servers with 60k+ active users).
• Contributions to https://github.com/asterisk/asterisk/.
• Experience with CI/CD, clouds, Linux & networking.
• Good level of English (B2 or higher).
• For Lead level: able to act as technical lead for the Asterisk domain.
• For Lead level: able to work cross-team with backend developers, infra/DevOps, QA, and product owners.
• Remote work flexibility – work from anywhere.

Responsibilities

• 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.

Skills

Asterisk

SIP/VoIP

Cloud deployments

CI/CD

Linux networking

Cross-team collaboration

English proficiency

Tools

Asterisk source

GitHub (Asterisk contributions)

Job description

Idt is seeking a Senior/Lead Asterisk Developer to build and scale a cloud PBX solution based on Asterisk. You will design and implement advanced Asterisk dialplans, debug core issues, and contribute to a scalable telephony stack in a cloud environment.

The role requires 7+ years of production experience, contributions to the Asterisk project, strong CI/CD and Linux networking skills, and a lead-level ability to guide cross-functional teams. Remote work is supported worldwide.