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We need only php developer who have full understanding of http://docs.whmcs.com/Main_Page in order to achieve below;
Product and transaction history
Client Add Fund
Client Security Setting
ETC we want all member functions that is existing in WHMCS to be called using API and developed in an existing design while admin will be managed normally at installation Domain of WHMCS so no need for admin api to be called as it will be managed directly from the admin script.
We ONLY need who have the experience as we wont be available to provide and chat and chat we can only provide details if you need BUT most know how to do it with out asking too much question