A very good description. Might I add the following.Test a production unit. Troubleshoot the same and direct its repair (others will probably do the work).
Skill with volt meters, oscilloscopes, signal generators, power supplies.
Able to read understand and follow written instructions. Able to ask for help when help is required.
Build prototypes. Build test fixtures.
Keep good notes.
Most importantly, make your boss look good.
I have several techs working for me and that is what I look for. For an entry level candidate such as yourself it is best to bring something to the interview to impress me, something you built out of your own interest.
Know components, be able to find and understand data sheets.
Basic familiarity with schematic generation software and simulators.
Computer skills. Microsoft Excel, Word, create a simple web page.