I am a professional and passionate Drupal developer. I have helped fixing issues in Drupal Core itself.
I have contributed modules to Drupal 7 and also Drupal 8.
Enough about me. Here is my answer to your question "What can I do for you?"
1. I can help you fix any Drupal issues existing in your site 2. I can help you create a custom module for your site specific features. 3. I can fix issues in contributed modules. 4. I can port Drupal modules for you and contribute it to the Drupal community (credits given to you) 5. I can train you in Drupal site building 6. I can be a Drupal consultant for you.