Instead of talking tediously, keywords can tell you just as much:

Internet-of-Things
LoRa, SigFox, Zigbee ..
Embedded C/C++
RPi, ATMega, STM32, ESP32 ...
I-o-T prototypes

Open source Office
LibreOffice
Open-source alternatives
Ubuntu Linux
Bash Scripting

Hardware Design
Electronics Design
Analog & Digital
PCB Prototypes
Computer Networking
Wifi Networks
MikroTik Routers & Switches
RouterOS Scripting
VPN

Webdevelopment
Apache, Nextcloud
PHP & MySql Programming
Drupal CMS
Basic HTML, CSS, ...

Wireless
Antennas
Point-to-Point Radio
RF Systems