Site Reliability Engineer (self-employed)

• Designed and operated homelab with 13 services in production 24/7 for 365 days, measured uptime 99.7% (3 planned outages, 0 unplanned). Stack: Proxmox VE + ZFS + KVM/LXC + Oracle Cloud free tier.
• Operated public VPS (pentagran.duckdns.org) with Docker, nginx and automatic ACME cert rotation. Serves ~30 static pages + Fastify API with 13 endpoints.
• Built 3 operational AI agents (Lia, Codex, Palomino) with separated roles. Shared memory via Obsidian vault + Git. Estimated ~200 hours/year automated.
• Reduced incident response time by 40% via 23 documented runbooks after each post-mortem. E.g. SSL cert restoration went from 8h (month 3) to 45min (month 8).
• Detected and diagnosed 4 critical failures: expired SSL cert, ZFS ARC consuming all RAM, RAID1 degraded due to dead disk, missing swapfile on Oracle free tier.

Backend Developer (internship)

• REST API in PHP + MySQL for internal management system. 6 CRUD endpoints with JWT auth, used by 3 applications (web, mobile, desktop).
• Legacy code migration to best practices: 40% reduction in duplicated lines, 25% improvement in average response time (from 800ms to 600ms).
• Daily code review with 4 senior devs. Resolved 12 critical tickets in 6-month sprint.

ASIR — Network Systems Administration

Database administration, incident management, security with professional criteria. Final project: deployment of self-hosted infrastructure with automated monitoring.

Professional certificates

Equipment, networks, voice and data. 380 hours of practical training.