Особисті дані приховані

Pavlo antonenko
Linux System Administrator
Ukraine GitHub Email LinkedIn

EXPERIENCE
Linux System Administrator | Freelance 2026 – Present
Remote | Server configuration and administration for clients
Configure and harden Linux VPS servers from scratch: user management, SSH key authentication, UFW
firewall, Fail2ban, unattended security updates

Deploy and configure Nginx web servers with SSL/TLS certificates via Let's Encrypt + Certbot

Set up Docker environments using Dockerfile and docker-compose for client applications

Establish automated backup systems with cron jobs and external storage integration

Perform server troubleshooting and incident resolution following RCA methodology

Maintain technical documentation and runbooks for all completed configurations

Linux Troubleshooting Practice | SadServers 2026 – Present
40+ scenarios: process management, disk analysis, log processing, database connectivity, containers
Resolved 40 + real-world Linux system scenarios covering: process management, disk space analysis, log
processing, database connectivity, Kubernetes pod scheduling, and network diagnostics

Documented every incident in a public ops-runbook with full diagnostic workflows, CLI cheatsheets, and
resolution steps

Applied structured L2/L3 methodology consistently across all troubleshooting scenarios

GitOps & Containerization | Lab Project Oct 2025 – Nov 2025
Home lab: Kubernetes, Docker, Prometheus, Grafana, ArgoCD
Set up local Kubernetes cluster and practiced pod deployments and service configuration

Configured Prometheus and Grafana dashboards for cluster monitoring and alerting

Explored Docker containerization: multi-stage builds and image optimization

Experimented with ArgoCD for GitOps-based deployment automation

Skills: 

Linux & CLI: Ubuntu, Debian, CentOS, Bash, systemd, cron, log analysis; Web Servers: Nginx, Apache2, SSL/
TLS, Let's Encrypt, Certbot, reverse proxy; Containers: Docker, docker-compose; Security: SSH hardening,
UFW, Fail2ban, file permissions; Monitoring: Grafana, Prometheus; Databases: MySQL, PostgreSQL - setup,
user management, backup; Networking: TCP/IP, DNS, HTTP/HTTPS, SSH; Tools: Git

CERTIFICATIONS: 

SadServers Master • EPAM DevOps Beginner & Fundamentals • Docker Essentials (IBM) • Kubernetes
Introduction (Linux Foundation) • GitOps Introduction (Linux Foundation) • Oracle Cloud Infrastructure
Foundations • AWS Cloud Quest • Linux Unhatched (Cisco) • Networking Basics (Cisco)

Languages: 

English - Professional, Ukrainian - Native
Education: 

Bachelor's degree, Computer Science, Lutsk National Technical University, Ukraine, 2019