I would be very careful with entering into a partnership with people you don't know. Would you marry someone you know "vaguely" or not at all?
I'd try to structure a trial period where you get to work with the other founders for a predetermined period of time.
If you do chose to continue, make sure you're protected. i.e. who owns the software you're developing? You don't want to develop it and then have them fire you and keep your shares, for example.
You should also build vesting into your shares. 4 year vesting is common, so that if you leave after 1 year you will still have 1/4 of your equity.
I'd try to structure a trial period where you get to work with the other founders for a predetermined period of time.
If you do chose to continue, make sure you're protected. i.e. who owns the software you're developing? You don't want to develop it and then have them fire you and keep your shares, for example.
You should also build vesting into your shares. 4 year vesting is common, so that if you leave after 1 year you will still have 1/4 of your equity.