One of the driving forces in my career has been to work for the best people.
When I started to reach out to companies for whom I wanted to work, one of the top considerations in my mind was whether or not I would want to work for the CEO of that company. It was usually the CEO to whom I was reaching out, and so I would take some time to think about their character. Did they seem interesting? Did they seem like someone from whom I would want to learn? Did they share the same values as me?
I have been blessed to work with an amazing team in my first job. My boss is spectacular, and has provided me with a number of opportunities to advance my skills. Although I was initially hired as a writer, I have been allowed to take on many different projects, ranging from research to product. Every opportunity has helped me grow as both a person and a professional.
I am convinced that the thing you should look for above all else in a job is whether you are going to be able to do interesting work. The next best thing to look at is whether you'll be working for the best people. Both of these atrributes are in the same category: they both equate to your abillity to progress.
Ask yourself: will this job allow me to work with people that I find interesting? Are they going to inspire me? If you end up working for someone who doesn't interest you, or who you feel doesn't know as much as they say they do, then that's a problem. They'll be the person assigning you work, and the person who checks your work. Being managed by someone who you are not confident in will only act as a bottleneck.
If you're young and looking for a job, one of the best thing you should do is think about who you are going to be working for. You'll spend a lot of time with them in your job, and they will be one of the most influential people in your life. If you feel confident in them, you'll always know where to stand. If you feel like they know what they're talking about, you will know that you will always have something to learn.
Work for the best people. Let that be a guiding compass.