Banks give loans.
You need and engineer working for you? Pay him, or sweet talk them into working for free but its hard, even if you had a snapchat idea, it would be hard.

If your idea is good, talk to friends, relatives, and move around in your circle. Make a cool "physical" printed presentation, include the idea, objective, and move around in your city for people.

I believe hardly you could find someone on the web willing just to chat and give you money without any guarantee.