Editing and adding to existing basic math EA\code - No indicators

I am working on the existing EA for some time and naturally constantly taking care of bugs and adding new stuff.

EA contains 4 parts or 4 functions that are relatively simple and easy, its a basic mathematical EA with no indicators.

EA is based on market movements. However, I am looking for a programmer capable of going into existing code and change it as needed.

A short explanation of what EA should do.

The first function of this EA is a function that posts pending orders by the certain distance corresponding to market movement.

The second function is canceling function, meaning that if the maximum amount of pending orders is reached, EA should cancel further pending order and create a new one.

The third function is responsible for creating opposite pending orders once previously created pending orders are executed.

The fourth function is more like OCO function where 2 or more positions will cancel 1 or more positions.

Short explanation what should be accomplished.

The first function is fully implemented, but need software person to go trough a check the code.

The second function is fully implemented, but need software person to go trough a check the code.

The third function works but not perfectly as it should, so it needs some fix-up.

Forth function needs to be created. Again where two or more positions with positive balance neutralizing one or more positions with a negative balance. 

Please let me know if you need any additional info.