I'm retired, 74 yrs. old, but run a full-time small manufacturing company making model railroading kits and detailing items for all types of models. We ship all over the World.
I've had a wide range of occupations from engineering, to magazine editor, machinist, owned a printing company, systems administrator in magazine publishing, management, programmer, trainer/consultant with a partnership with Seagate Software until they sold out to Business Objects. Then went into long term consulting in reporting systems and databases which is what I retired from.