The phrase “a good work ethic” to me describes what you are saying exactly.

I am not passionate about computers, I like solving problems and streamlining the tedious. Personally I don’t have a passion for my company either. I like them, I like what they pay me, and I like the benefits and culture.

I see my paycheck as a business transaction that is favorable to both myself and the company I work for.

With that being said, I do actually enjoy the work I do, but would never use the word passion to describe it.