A great question. Interesting that you inquired in regard to personality which offers tools such as the Myers-Briggs, Realise2 / CAPP, the VIA Institute on Character, or even Gallup Organizations Strength Finder Assessment. With having a familiarity with those the dream job would be two fold. Student and Teacher.
Those would be the career path for the dream job. Of course along with that as is with any position there would be job roles such as instructor and mentor. Counseling as a job role may be considered too with reservation regarding following ethical guidelines. Essential of course is application seeking performance as a measure.
Seeking to fulfill your request being elaborate and detailed I must confess I would be in a quandary. At task would first be specifying a choice of study and then a specific within that choice. That in and of itself seems to be a challenge.
One may say I am a jack of many trades and an expert of none. A handyman of sorts would be an analogy. I know enough to change the electrical receptacle, add a circuit, can read the schematics, understand code, yet I could not design a house with engineering specifications. Best leave that to a professional.
That seems to be so with the many trades, while there are so many other interesting trades as well. Seems student is a best choice, while possibly professional learner may be appropriate. Maybe learning would be that best choice for a specific. At question as a job within a career field naturally are the rewards with their value and worth.
At the age of retirement consideration would be somewhat different compared / contrast to the starter regarding details while seeking elaborate. However, for the starter that as a reality may be a valuable consideration for a job's career path acquiring experience, knowledge, and achievements seeking success.
Hopefully one would achieve credibility offering expertise at varying levels while seeking those. For a trade of any kind that offers possibility of consulting. One may continue the career path within retirement by some means. That again would offer reward while determination of value and worth may have a new set of criteria.
Well that about wraps it up. Hope that offers help with seeking an answer for the Dream Job.