I am no longer active in MediaWiki developer community due to personal priority changes and the fact that MediaWiki couldn't defeat the spam problem effectively.

My stack

I've used Semantic MediaWiki and Semantic Forms and actively participated in community around these two extensions.

Extensions

I developed and maintained several extensions:

• Widgets
• Header Tabs
• Google Geocoder (merged into Maps extension)
• Page Object Model
• SlideShare (effectively replaced by SlideShare Widget)

I also contributed to a few other extensions

• OpenID
• Semantic MediaWiki
• Semantic Forms
• Semantic Result Formats

Links

• My homepage
• My user profile on Wikipedia