Semiconductor and optoelectronics process and device engineer. I'm currently focused on R&D and product development, but in the past I've done a lot of manufacturing. I always find it therapeutic to work with my hands to make something.
In previous lives and while in school I did civil engineering work designing bridges and mechanical engineering stuff for architectural projects. I found all that stuff boring because I was always at the computer and never in the field and because every project was more-or-less the same. But those jobs were much more stable!