Dan Flanagan
I've been Drupalin' since 2016.
My most ambitious Drupal contribution is the Crossword module, which probably takes more of my time than is reasonable. I used the module to build CrosswordPlayground.com.
I've also contributed a couple useful modules to the Migrate ecosystem
Certifications
Core Patches
Here are some of my favorite core credits. I like writing tests for issues that need tests, but every now and then I'll dig in and actually fix something.
#3268932: Add methods to assert status messages to WebAssert
#3049048: Invalid JSON:API responses when maintenance mode is on
#3248816: ResponsiveImageFieldUiTest.php should be moved to tests directory