30 developers are currently working on Dota 2

Valve employee Jeff Hill, who regularly appears on Reddit and helps collect feedback about bugs in Dota 2 through this platform, shared details about the total number of game developers at the moment.

According to the developer, 30 people are working on the discipline. Beyond that, Jeff doesn't mention all of the ops developers, Steam staff, localization, and support. The employee admitted that the company is engaged in writing code.

Recall that the latest patch 7.31d, which is currently relevant, was released in early June, you can read more about all the main changes in the corresponding review.