Skills
Technical capabilities
An honest assessment of my technical range, organized by category. Proficiency labels reflect real-world experience, not arbitrary scores.
Proficiency labels
These labels indicate the depth of my practical experience with each technology:
ProductionUsed in live production environments
AdvancedDeep experience, can work independently on complex tasks
ProficientSolid working knowledge, can handle most tasks
Working KnowledgeUnderstand fundamentals, can work with guidance
LearningActively studying, not yet used in production
Operating Systems
Ubuntu / DebianProduction
CentOS / RHELAdvanced
Windows ServerProficient
Alpine LinuxWorking Knowledge
Infrastructure
DNS / DHCPProduction
LDAP / SMTPAdvanced
NFS / SANProficient
Network TroubleshootingAdvanced
Cloud
CloudflareAdvanced
AWS (EC2, S3, IAM)Proficient
DigitalOceanProficient
HetznerProficient
Virtualization & Containers
DockerAdvanced
Proxmox VEAdvanced
KVM / QEMUProficient
LXC / LXDProficient
VMware ESXiWorking Knowledge
Security
SSH HardeningProduction
Firewall ConfigurationAdvanced
TLS / SSL ManagementAdvanced
Intrusion DetectionProficient
Audit LoggingAdvanced
Automation
Bash ScriptingProduction
PythonAdvanced
AnsibleAdvanced
Git / GitHubAdvanced
CI/CD PipelinesProficient
Business Systems
ERPNextAdvanced
Frappe FrameworkAdvanced
WordPressProficient
Web Technologies
NginxAdvanced
ApacheProficient
MySQL / MariaDBAdvanced
PostgreSQLProficient
HTML / CSS / JavaScriptProficient
Technical Support
Incident ResponseAdvanced
Root Cause AnalysisAdvanced
DocumentationProduction
User TrainingProficient