DevOps & Cloud
AWS (EC2, S3, RDS), Docker, Kubernetes (K3s, K8s, RKE2), Longhorn, Jenkins CI/CD, GitLab CI/CD, Terraform, Ansible (Playbooks, AWX)
Programming
Golang, Python, C/C++, JavaScript, PHP, Bash, Git
System Administration
Linux (Debian, CentOS), Windows Server, Cloudinit, Cloudbase-init, Proxmox VE, Network configuration, Security hardening, SSL/TLS
Database & Message Brokers
PostgreSQL (replication, WAL-G), Redis, MongoDB, MySQL, Consul, Kafka (Kraft), RabbitMQ
Load Balancing & Web
Caddy, HAProxy, Traefik, WordPress, WordOps
Monitoring & Logging
ELK Stack, LGTM Stack (Loki, Grafana, Tempo, Mimir), Zabbix, Uptime Kuma
Collaboration Tools
GitLab, Zulip, Redmine, Jitsi