Looking for addon developer

I basically want to add to how the Simple Commerce module works.

At the moment once payment is received Simple Commerce can change the member from one group to another, eg. from unsubscribed to subscribed.

What I want to do is have the module change the status of an entry when payment is received. So for example a user might create a listing, then pay for it to become active.

I have been using the Membrr addon which can do that and so much more but the problem is at the moment Membrr handles single Paypal Express payments as 1 time subscriptions and this doesn’t look good for the user as it might appear suspicious to them. Membrr seems like overkill for my simple task.

Any developers out there interested?