Hi, this sounds right up my street... I would be happy to provide a small sample project, in order to prove myself.
I categorically 'ticked' yes to every requirement in your list, with the exception of "ticketing system", I'm not quite sure what that is... Is it a descriptive term for a redemption architecture (for your app itself, like Zendesk) or something to do with how you propose to communicate? Sorry to sound dumb, it's just not that clear.
I'll leave it there for now, but please feel free to get back in touch, if you would like to get a taste of my work, speed of turnaround and reliability.
All the best
Mark