Over the years I've applied for a fair number of jobs and hence written quite a few cover letters, leading to quite a few interviews. This is the notes I use when putting together a cover letter, just because a few people have asked.
A few of my Raspberry PI projects have been based on Pi Zeroes put in small glass jars showing pretty LEDs. There isn't much airflow or room for cooling in there, so it's worth checking how hot they are getting.
I've recently finished my first year as a technical team lead, my first role mentoring and supporting a technical team rather than being fully involved designing and coding on projects. This is some of the stuff I wish I had learnt faster.
This is my list of things to consider when thinking about training for a technical team, produced while discussing how we could introduce such a radical idea.