I have the same question.
I've tried working with UpWork, but their developers seem more geared towards "known"-type of projects, involving specific tech, or specific type of jobs, or fix it jobs.
I presented a project of some advanced JS, nothing too serious, and almost every developer declined or couldn't understand the requirements, likely because they didn't read any of my material about the project.
The job is pretty simple: add support for https://play.Presenta.cc .json files to https://github.com/pseudosavant/player.html#playerhtml. I want to be able to have a Presenta File player, so I can play the Presenta slideshow files and video files from my local folder using the html page. That's generally it. Upwork couldn't deliver.
This job was step one, in a very few number towards an MVP.
Nobody on Upwork seems to be able to do this.
I'm pretty disappointed with UpWork.
I have a call with TopTal next week
I have a call with Iron Forge next week, as well
If anyone here has reviewed this, is able to do this, and want to get paid doing it, leave me a message.
Thx