Custom API Calls for backend and android

Hello, I am the professional developer you are looking for, I have over 15 years of experience in various programming languages, development techniques and technologies. Please see my certifications and customer reviews for my credentials. My bid would include making a password protected JSON / AJAX API that could be used over web connections to perform "create, read, update and delete" operations on MySQL data records. I can offer much more if you are interested, such as tiered user levels, client authentications, table management and more. For advanced options we would need to raise the budget, please let me know if you are interested in any advanced functions.