Pros
It is a good place to start.
Cons
The company culture is extremely toxic. They're always in "Start Up" mode and it is likely that you will be expected to work odd hours and weekends in addition to your regular schedule. The turnover is pretty high for the people who have the freedom to leave so heads up. You will learn a lot and get a lot of experience though. Keep the extra hours in mind when negotiating your salary because they will not tell you that part! They also use intimidation tactics to make you feel like you have to do work outside of your job description and work unethical hours. I once had the flu and worked from home for 2 days. When I got back to the office, still sick, I was told that I "just didnt want to work" as if 1. I wasnt quite literally working while sick at home and 2. I didnt literally have the flu. The manager who said that to me was out the entire next week because he had caught the flu and infected his whole family.