2d game for mobile phone (android, and iphone, + others)

I am looking to build a 2d mobile game.

This game will initially be simple in graphics, and will involve balls moving around and simplistic platforms made up of connected lines.

Whilst the game will be graphically simplistic, the physics needs to be customisable so that we can have control over gravity, mass, wind, elasticity etc. At some point, I will want these physics to be either randomised or set by the user even.

Project can be broken down into the following phases:

1. Building a 2d ball game with simplistic platform made up of lines.

2. The balls will need to be customisable such that one can draw their own image for it or at least upload one.

3. Users can draw their own platform design (e.g. drawing polygons), which will then be used as the platform shape in the game that the ball rebounds off.

Looking for someone who is skilled in 2d game development with a great understanding of how to manipulate the physics.
Ideally, I would like someone who enjoys playing mobile games or has a creative or artistic side to them aswell!

This is a very exciting project and i'm keen to get started ASAP!

I look forward to hearing from you soon!