My company produces medical devices that help a lot of people enormously, including my girlfriend. Her life was unbearable before we got the device. In addition

My company produces medical devices that help a lot of people enormously, including my girlfriend. Her life was unbearable before we got the device. In addition she probably got the device only because I knew about it through work. So the work should be meaningful but somehow it doesn't feel that way to me. Between bad technical decisions, bureaucracy and a lot of schedule pressure I don't like my job. I think I would be happier working on a less meaningful product but in a more technically interesting and challenging environment. There are other people who get a total kick out of helping people but somehow this doesn't work for me.