Ivan K.

I help fix broken Linux servers, Docker setups, and web infrastructure issues. Most of my work is troubleshooting — identifying problems quickly and resolving them with minimal downtime. I also set up servers from scratch and handle full configuration — from initial deployment to production-ready environments. I have hands-on experience with: Docker (custom setups, networking, debugging) Nginx (configuration, routing, performance issues) DNS (domain setup, propagation, misconfiguration fixes) Email systems (SMTP, IMAP, POP3, SPF, DKIM, DMARC, spam issues) Linux servers (Ubuntu, Debian, CentOS, RHEL) I can help if: Your server is down or unstable Docker containers are not working or require custom setup Nginx returns errors (502, 504, etc.) Emails are not delivered or go to spam SPF/DKIM/DMARC are misconfigured You need a server configured from scratch I focus on reliable solutions, minimal downtime, and clear communication.