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ekernik/README.md

System Administrator | Windows & Linux | RHCSA

U.S. Citizen β€’ Open to relocation & remote

I design, operate, and maintain reliable Linux and Windows systems with a strong focus on uptime, security, automation, and documentation. My background includes several years working in production environments, where I supported infrastructure, automated routine operations, and ensured systems remained stable and recoverable.

🌐 Personal Website Β· πŸ”— LinkedIn Β· πŸ“« Email


Highlights

  • CompTIA Security+ β€” Security Fundamentals & Best Practices
  • RHCSA β€” Red Hat Certified System Administrator
  • CCNA β€” In Progress
  • CS50x β€” 2023
  • Homelab: Proxmox-based environment simulating production workloads (Windows AD, Linux servers, DNS, reverse proxy, monitoring, backups)
  • Hands-on experience operating Nginx, TLS/PKI, DNS, firewalls, system monitoring, and backup strategies
  • Strong automation mindset: Ansible, Bash, reproducible configurations
  • Background in software development β†’ brings disciplined scripting, version control, and documentation into system administration

Systems & Infrastructure

Operating Systems

  • Linux (RHEL, Ubuntu)
  • Windows Server, Windows 10/11

Virtualization & Environments

  • Proxmox VE
  • VM lifecycle, snapshots, backups

Core Services & Networking

  • Active Directory (AD DS)
  • DNS, reverse proxy (Nginx)
  • TLS / PKI
  • Firewalling, Fail2ban

Automation & Configuration

  • Ansible
  • Bash scripting
  • Python (tooling)

Monitoring & Reliability

  • Prometheus, Grafana
  • Uptime Kuma
  • Log analysis & alerting

Data & Storage

  • PostgreSQL, SQLite
  • Backup and restore validation

Practices

  • Git-based configuration management
  • Documentation & runbooks

Featured Repositories

  • πŸ”§ dotfiles β€” Shell/editor configs for a productive CLI
    zsh/bashrc, tmux.conf, vim/neovim, gitconfig; portable setup notes.
    πŸ‘‰ https://github.com/Ekernik/dotfiles

  • 🏠 homelab β€” Documentation & diagrams
    Infrastructure diagrams, AD topology, Linux services, reverse proxy, monitoring, backup workflows, and troubleshooting runbooks. πŸ‘‰ https://github.com/Ekernik/homelab


Current Focus

  • Preparing for CCNA
  • Expanding homelab with additional failure scenarios, monitoring alerts, and recovery testing

Notes for Recruiters

  • U.S. citizen
  • Interested in System Administrator / Infrastructure / Operations roles
  • Comfortable owning systems, participating in on-call rotations, and maintaining production environments

Pinned Loading

  1. dotfiles dotfiles Public

    Shell

  2. homelab homelab Public