Update JSON, XML API on Drupal 6 website

Required Skills
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Drupal Skills
1) Adding/Editing Data Fields/Tables (DB)
2) Using core modules
3) Using downloaded custom modules
4) Creating custom modules from scratch
5) Querying/reporting from Drupal DB using Drupal's data abstraction layer instead of direct MySQL queries.
6) Setting up and deployment of Drupal website

Other Bonus Skills (optional)
1) XML
2) JSON
3) Has created XML/JSON API using Drupal


Job Description
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1) Consult on correct way to implement process of API methods.
2) Need to update some existing methods and add some new methods to existing web API which is built as part of a Drupal 6 website, the API receives HTML form post data and responds with JSON or XML.
3) Set up your own development copy of the website or use our staging server.
4) Consult on deployment process from a development Drupal installation to a live installation.