I've deployed and maintain a geographically distributed VPN service across three locations for 100+ active users, using Xray, VLESS REALITY, Ubuntu Server, and Docker containers.
In my L2 technical support and junior system administration role at Lesno, I resolve network and infrastructure incidents within SLA, administer Active Directory and GPO, and support SMB access, IP telephony, and corporate systems. I standardized workstation deployment, reducing setup time from four hours to 1.5 hours, and optimized GPO and SMB-share structures to reduce repeat incidents by 30%.
I automate node deployment with Ansible and Git, monitor availability with Prometheus and Grafana, and investigate TLS, DNS, routing, packet-loss, and connectivity issues with tcpdump, Wireshark, mtr, and related tools. I also document incident response through runbooks and use OSINT to assess IP reputation, provider blocks, and traffic routing.
