your job will be creating new modules or modify exist modules, or whatever else, you are going to deal with many key members of this project so you should have very good communication skills.
the project is big and complex, so that I'm going to be extremely punctilious before pick a winner.
PLEASE, read below issues carefully, by bidding you are telling me that you compliant with these points,
1- at early stages - you are fine to keep discussing our requirements as long as we don't have a deal. you should convince me you are the person I'm looking for.
2- No partial payments, you will get your money by one go, after submitting and testing your code.
3- accurate estimated costs ( time and money) I have a right to cancel our deal if you did not respect the agreed costs ( money and time)
4- you are fine to change on original request(s) (free of charge)
what your Personal Message should include ( Any PM has not these requirements will be ignored)
1-you are an individual, we don't like to deal with companies! had many bad experience in this domain.
2-Porvide a sample of your work ( no links I need to read a part of your code) please attached a text file shows how you write a code.
3- bid by your working per hour price for now and tell me how many hours you are ready to work in daily basis.