http://wikimediafoundation.org/wiki/Job_openings/Code_Maintenance_Engineer
The core purpose of this job is to review and resolve bug reports,
enhancement requests, code changes and extensions relevant to
Wikimedia's free education projects, and to implement systematic
testing procedures. This is a very hands-on role for an experienced
software engineer who is interested in achieving high impact in a
fast-paced environment with a public benefit mission. If you have
existing development experience with MediaWiki, that's a huge plus.
:-)
We will take remote applicants into consideration, and we'll also
consider supporting relocation of the right candidate - our preference
is for this person to be based in the San Francisco office of the
Wikimedia Foundation.
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Erik Möller
Deputy Director, Wikimedia Foundation
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http://wikimediafoundation.org/wiki/Donate