I am a power user (“sailor”) of SailfishOS - the Linux distribution for mobiles. It even supports Android apps. Check it out! ;-)

Software development:

• From embedded Linux to Linux containers (buildah, Podman, Docker)
• From Waterfall to SCRUM
• C++ (C++20), C, Python, Bash, Make, CMake, AWK, LaTeX,…
• Protocols for communication

Telecommunications & electrical engineering:

• Statistical signal processing
• Estimation & detection (classification)
• Wave propagation