https://dart.dev/community/who-uses-dart
Flutter 1.0 is officially announced on Dec 04, 2018. After that, the demand of dart programmers is gaining popularity now. Because entire flutter app development is completely based on a dart. It seems that tech-giant Google has some big plans with the language. That’s why dart is implemented on two big projects including flutter and fuchsia OS.
https://dev.to/harshuinc/dart-the-language-behind-flutter-an...
I too write Dart (not Flutter), but let's not kid ourselves, Dart is not extensively used anywhere, even within Google.
Dart is used in almost every product group at Google.
- The Ads team continues to grow, with hundreds of SWEs primarily writing Dart code.
- The Google Play Console that lets app publishers market Android apps: all Dart (https://android-developers.googleblog.com/2020/06/introducin...)
- The Google Nest Hub and Hub Max devices: both the UI and a lot of back-end code are written in Dart
- Google Pay: Dart (and Flutter)
- Family Link, Google One, Stadia, Cloud Search: Flutter and Dart
Several other really big apps are being rewritten right now in Flutter. In all, there are thousands of SWEs writing millions of lines of code in Dart at Google.
And outside of Google, of course, there is the likes of BMW (https://www.press.bmwgroup.com/global/article/detail/T032861...), Sonos (https://tech-blog.sonos.com/posts/renovating-setup-with-flut...) and over 500,000 other Flutter apps that are all Dart-based.
Redmonk, the developer analyst firm, is pretty bullish on Dart: https://redmonk.com/jgovernor/2022/05/16/flutter-propels-dar...