Hello, I'm just getting started on Freelancer, so I'm eager to underbid just to get established. In any case, I'm your man. I've been an amateur trader for a while. I've written heaps of EasyLanguage and Pine, and wrote plenty of my own homegrown code. Writing custom EMA functions is quite easy. Perhaps what I can do best is ask you tough questions to sort out EXACTLY what your objective is. Perhaps I can suggest and offer something more customized (such as an Ehlers "Forward-Reverse" EMA) or an EMA with custom weights that attempt to find a certain trend.
Anyway, like I said, I'm eager to establish myself here and work with you.
Thanks, Christopher