Valeriy P.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Implemented, supported, and troubleshot high-load (more than 50 CPS) geographically redundant VoIP solutions across US, APAC, and EMEA regions. Expert in Kamailio, RTPEngine, and Asterisk, with strong hands-on experience in SIP, RTP, and SRTP protocol analysis and advanced Tier 3 / Tier 4 support. DevOps / IT Support Engineer with hands-on experience in implementing, monitoring, and troubleshooting infrastructure solutions. Skilled in Zabbix and Elasticsearch (ELK stack) for monitoring and log management. Strong automation background with Python development, Ansible playbook automation, and Bash scripting. Experienced with Git for version control and team collaboration. Focused on reliability, performance optimization, and proactive issue resolution.