From last two months i was contributing to drupal.org.
On D.O. i have created several patches for drupal core code as well as documentation.
Here is the link of my profile on Drupal.org.
Davinder on Drupal.org
Here is the list of patched that i helped drupal.org to close the different drupal core issues.
Patches Contributed to Drupal 8 Core
List of reviews of different patches by me on drupal.org.