None, if you are compatibile with the spirit of the company.
To be good as my colleagues were, required for me a lot of work. You will like R3 if you like to work hard. Not the company to work for if your goal is to survive to get the salary at the end of the month.
I left just because in the company I work now, that is a partner of R3, I have more possibility to apply the know how I have and to continue to contribute to the success R3 Corda deserves.