[noud]

Your problems is similar to the Secretary problem: https://en.wikipedia.org/wiki/Secretary_problem.

There is a perfect mathematical sound answer to your question: for the first n/e year n is the number of working years, e is Euler's constant) you should regularly switch jobs every 2 to 4 years. After these first n/e years you continue switching jobs regularly until you end up with a job that's better than all previous jobs you had. That's, with the highest probability, the best job you would ever get in your life. Don't switch jobs with others after that!

E.g. You would work around 50 years (from 16 to 66), which means that for the first 50 / e = 18.3 years you should switch jobs regularly. After these years you should be think twice before changing jobs.

[jbjbjbjb]

Not quite the same because you would typically have some idea about the quality of a company before joining.