I'm Jack Phoenix, a MediaWiki developer interested in Firefox OS. Since February 2016 I've been the maintainer of the Finnish localization of Firefox for Android (Fennec), and I've had commit access to the hg repository since 9 February 2016.
If you're interested in my other FOSS contributions, check out my MediaWiki.org user page linked above. You can also find me as ashley on irc.freenode.net or e-mail me at jack[ at ]countervandalism[ dot ]net.