VoIP / Asterisk Engineer

We are looking for a Middle-level VoIP / Asterisk Engineer to be responsible for supporting and developing our own IP telephony. The goal is to develop a full-fledged VoIP infrastructure, work with Asterisk, SIP, Linux, and integrate telephony with backend systems.

What you will do - Support and develop an Asterisk-based IP PBX; - Configure dialplan, SIP trunks, SIP agents, and call routing; - Integrate backend applications with Asterisk via ARI / AMI; - Diagnose issues with SIP traffic and call quality; - Ensure security and fault tolerance of the telephony system; - Work with firewall, fail2ban, and protection against SIP/brute-force attacks; - Manage CDR and call recordings: storage, rotation, and control; - Maintain infrastructure on Linux, MariaDB/MySQL, Redis, Nginx, cron, and Samba; - Configure and maintain monitoring via Grafana Alloy and Heplify; - Keep technical documentation and participate in infrastructure improvement.

What matters - At least 2 years of practical experience with Asterisk; - Strong understanding of SIP: registration, NAT traversal, codecs, and problem diagnosis; - Practical experience with ARI and/or AMI; - Confident Linux administration; - Experience working with MariaDB/MySQL and SQL; - Understanding of network security, firewall, and fail2ban; - Experience working with Redis; - Understanding of Nginx configuration as a reverse proxy; - Familiarity with monitoring systems - Grafana, Prometheus, or similar; - Independence, systemic thinking, and ability to independently find and eliminate technical problems.

Why this position may be of interest If you are interested in solving complex VoIP tasks, finding the causes of problems, and influencing the development of the technical system - we would be happy to meet you.