MediaWiki installations, configurations, updates, backups, migrations, skins, templates, extensions, repairs, hacks, anything.
I'm a self-taught web developer, specialised in MediaWiki. I've developed many MediaWiki extensions, several skins and some core code. I also got a grant to participate in the international MediaWiki programming marathon of 2013, in Amsterdam. See my portfolio and my work history for proof of my previous work.
Besides being a developer, I also contribute to Wikipedia since 2008. Having made thousands of edits, I know the user experience well, including the general wiki way and culture. MediaWiki and wikis are more than a job to me, and that will show in the final product I deliver.