Devops work / oncall is one example that comes to mind. Some people really like - it's a fast paced environment where one can debug large systems, and apply fix

Devops work / oncall is one example that comes to mind. Some people really like - it's a fast paced environment where one can debug large systems, and apply fixes that make a lot of other people happy. Others can't stand it, and just want to write code. Some people get satisfaction from writing some low-level code that isn't really visible for the end-user in the form of any feature, but e.g. makes the system 10% more efficient - think about kernel optimization work for example. Others again mostly get satisfaction from delivering user-facing features. Then there's people who will get satisfaction from just being able to work with a certain set of technologies, who might not be happy about being asked to work with other pieces of technology.