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Vladimir Yushkov

@vladimiryushkov

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System administrator specializing in VoIP, Docker, and reliable communication infrastructure.

Georgia

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What I'm looking for

I’m looking to own Linux/telephony infrastructure—building reliable VoIP services, automating operations with Ansible, and supporting users during incidents. I value clear ownership, fast troubleshooting, and modern tooling.

I’m a System Administrator focused on dependable communication services, from troubleshooting integration issues to ensuring infrastructure stability. I monitor and analyze application logs, perform incident investigations (including SQL queries), and keep communication platforms running reliably for clients.

In my current role, I deploy and maintain Docker-based application components, configure STUN/TURN for WebRTC softphone connectivity, and analyze traffic with Wireshark to diagnose VoIP and application-layer problems. I also deploy and maintain FreePBX from scratch (including Twilio SIP trunk setup) and support telephony integration with a CRM system.

Previously at Hoster.kz, I administered Linux infrastructure and core services (mail, DNS, Nginx/Apache, MySQL), monitoring with Nagios/Zabbix/Grafana and automating routine administration using Ansible. Earlier, I worked as a Go Sport iOS Developer, building app modules in Swift/JavaScript—an experience that keeps me practical and detail-oriented when integrating systems and delivering reliable outcomes.

Experience

Work history, roles, and key accomplishments

Current

System Administrator

Current

Informunity

Sep 2025 - Present (10 months)

Monitors and troubleshoots integration issues involving an Asterisk PBX, including log analysis and incident support. Deploys and maintains Docker-based services and WebRTC softphone connectivity via STUN/TURN, with FreePBX/Twilio SIP trunk and CRM telephony integration.

Log Analysis Docker STUN TURN WebRTC Wireshark SQL SIP Trunking CRM Integration

System Administrator

Hoster.kz

Oct 2023 - Sep 2025 (1 year 11 months)

Administers and optimizes Linux infrastructure, covering mail, DNS, web services, databases, Docker, firewall rules, backups, and SSL certificates. Monitors and automates operations with Nagios/Zabbix/Grafana and Ansible, and manages IP telephony with FreePBX/Asterisk.

Linux Server Administration DNS Nginx Apache MySQL Docker Backup SSL Nagios Zabbix Grafana Ansible Postfix DKIM SPF DMARC Asterisk IP Telephony Plesk Server Migration Windows MacOS

iOS Developer

Go Sport

Oct 2021 - Feb 2023 (1 year 4 months)

Developed iOS app features and increased development speed by introducing a generic table view manager. Built modules including user profile, playground details, and event details.

iOS Development Swift UITableView Modules Git GitHub Actions