Advanced Wordpress / Jquery / Ajax / SQL expert

Need an advanced WP expert who is capable of building custom WP plugins as well as modifying existing custom coded plugins. You must also have expert jquery / ajax capabilities. To prove yourself, let me know what advanced custom work have you dont onto WP plugins , jquery & ajax ? The job will involve modification to an already coded custom WP plugin which is having issues at some places .. some relate to jquery / ajax, some relate to modification of query codes.. So i must say this is not a beginner job at all..hence, dont waste my time by bidding without any advanced expertise.. We might go on fixed price basis too where i will provide you all details & you let me know cost to do the same , if that works better..