Need freelancer in my team for small small development and bug fixing

Hello freelancers, Read this complete project description first. Why I Need Freelancers ? I have my one software , one freelancer is already working on same from last 12 month, and he is doing very good , this is ongoing project and always have regular updates. My current developer is working very hard on this project , but as time is less and we want to run with the development , I need some more freelancers , who can build the code and deliver me after testing , so My current freelancer can integrate it . What Is Responsibility ? 1. I will give all required files as well as work flow and wireframe of the module we need to develop . selected freelancers have to develop it in real time and deliver us back. 2. There are lots of bugs which we immediately need to fix. 3. We have desktop version of our software , now working on web version also. Who should BID ? 1. Only individual freelancer should bid, if you are company then don't bid 2. I will not give any advance payment , so don't demand something like this 3. As soon as you complete work , I will create 50% milestone and release it , after testing it on same day I will create and release another 50%.