a simple conversation doesn't hurt. i'm guessing he's probably bored or has a lack of motivation to do the full time work and possibly has stumbled upon someth

a simple conversation doesn't hurt. i'm guessing he's probably bored or has a lack of motivation to do the full time work and possibly has stumbled upon something more lucrative, he/she could be out of there as soon as the mvp is done! i guess some obvious questions are whether or not this employee is working on open source projects or something for his own potential business, that wasn't clear in the question, if it's the later, have that conversation to figure out why. if it's open source that's not conducive to your company's goals then you need to set the rules and expectations explicitly. this is obviously affecting your team's morale so you need to have some decision on this, and quickly, because you've delayed for too long!