I know that they repair everything that concerns engines, but what is the actual day for them. Do they sit in the factories or work in airports?
closed as too broad by vasin1987, mins, RockPaperLizard, SMS von der Tann, Ralph J Apr 30 '16 at 14:34
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You ask a very broad question. Jet engine technicians can work in various capacities depending on the job they are hired to do.
In my experience, I worked on the flight-line directly on aircraft removing/installing, performing operational checks, troubleshooting and servicing engines and other systems.
Some technicians work on engines out of the aircraft and in a controlled environment like the factories where engines are made. Others work in repair shops tearing down and rebuilding existing engines.