About Me

I am Adrian Kozlowski, a system administrator based in Mannheim. I work with Linux, infrastructure, and open source. I care about building systems that are transparent and maintainable — for personal projects or production environments. Outside of work, I maintain Razer Control Revived, an open-source project for native hardware control on Linux.

How I run infrastructure

Clear intent. Safe shipping. Boring operations. Healthy metrics.

  1. Design
  2. Build
  3. Operate
  4. Observe

Core Skills

ProxmoxKVMDockerOPNsenseFortinetAnsibleTerraformGrafanaPrometheusCheckMKGitHub ActionsGitLabUbuntuDebianRHELFedora

I build and operate virtualized environments with Proxmox and KVM, run services in Docker containers, and secure networks with OPNsense and Fortinet firewalls. Automated deployments with Ansible and Terraform, monitoring with Grafana, Prometheus and CheckMK. GitHub Actions and GitLab power CI/CD pipelines. Daily drivers: Ubuntu, Debian, RHEL, and Fedora.

Technology Stack

UbuntuDebianRHELFedoraDockerNginxMariaDBPostgreSQLWireGuardTailscaleTerraformAnsibleGitHub ActionsGitLabPythonBashPowerShellGo

Daily toolkit: Ubuntu, Debian, RHEL and Fedora as operating systems, Docker for containers, Nginx as reverse proxy, MariaDB and PostgreSQL for databases. WireGuard and Tailscale for VPN connections. Terraform and Ansible for infrastructure-as-code. GitHub Actions and GitLab CI for CI/CD pipelines. Python, Bash, PowerShell and Go for scripting.

Looking for Linux operations, hardening, Docker or VPS setups, clearer network segmentation, or clean handovers? I care about systems you can run and pass on — not only uptime. Email is fastest; addresses are on the legal pages.