- Freelance multimedia developer: C++,Qt,OnenCV,ImageMagick
- Electronic Engineer: Microchip PIC, ESP, Arduino
- System administration: FreeBSD, Microsoft Windows Servers, Linux
- Virtual environments: Hyper-V, Proxmox, bhyve, VirtualBox
- NAS : TrueNAS, ZFS
- Firewall : pfSense, OPNSense