Conversely, an engineer with 15-20 year's experience may have - and want - a life outside work. And be very happy to trade-off an exciting project for one that

Conversely, an engineer with 15-20 year's experience may have - and want - a life outside work. And be very happy to trade-off an exciting project for one that allows them to work without using all their mental energy. Because right now there's enough other challenges in life.