Update README

Remove link to a position not found and replaced with general link to the careers page.

Author: Jeremyyang920

README.md

@@ -192,7 +192,7 @@ Please see [our helper](https://github.com/sendgrid/sendgrid-python/tree/master/
 <a name="announcements"></a>
 # Announcements
 
-Join an experienced and passionate team that focuses on making an impact. Opportunities abound to grow the product - and grow your career! Check out our [Data Platform Engineer role](http://grnh.se/wbx1701)
+Join an experienced and passionate team that focuses on making an impact. [Opportunities abound](https://sendgrid.com/careers) to grow the product - and grow your career!
 
 Please see our announcement regarding [breaking changes](https://github.com/sendgrid/sendgrid-python/issues/217). Your support is appreciated!