Senior VoIP Engineer / UC Architect

I am a Senior VoIP Engineer and UC Architect with extensive hands-on development experience. I have built and deployed a web management platform for Asterisk multi-tenant IP-PBX (Centrex) and a web UI for Kamailio to manage routing, trunks, numbers, and number-to-backend mapping. Currently, I operate and support approximately 40 standalone PBX servers and 6 multi-tenant Centrex platforms, including API integrations with customer infrastructures.

My expertise includes working with Asterisk components such as PJSIP/chan_sip, dialplan, AMI/AGI, ODBC RealTime, queues, CDR/CEL, and real-time dashboards using Redis and SSE/WebSocket technologies. I also design and support SIP proxy logic in Kamailio, implementing multi-tenant routing patterns, dispatcher-based load balancing, and clear inbound/outbound routing separation.

I develop real-time monitoring components and integrate them into PHP-based admin UIs. Additionally, I create reporting and analytics solutions using MariaDB schemas, triggers, views, and queries for queue_log and CDR data, including data retention and archiving strategies.

I implement AI voice modules including Google Speech-to-Text, Text-to-Speech, and LLM-based intent and answer classification with multilingual call flows supporting Russian, Lithuanian, Latvian, and Estonian. I store transcripts and results in databases for audit and automation purposes.

I communicate fluently in Russian and Lithuanian, with basic written English and limited speaking ability, preferring written communication. I am comfortable working remotely or in hybrid environments within the Baltics region.