“Imagine a world in which every single human being can freely share in the sum of all knowledge. That’s our commitment.”
If you don’t know already, I left Automattic (WordPress) and have joined the Wikimedia Foundation (Wikipedia) in February. Before this, I haven’t posted our regular jobs because I wasn’t too sure how relevant they were, and because I got burned by the Jobvite system spamming my twitter followers with jobs. (I apologize profusely!)
This is despite the fact that our infrastructure is PHP ([obviously][mediawiki]).
Until recently the Foundation has had lacked mostly Javascript and UI engineers and not senior-level PHP ones. But I guess when I joined all of the good PHP developers left! j/k 
Currently and in the coming months, we will have had three positions open up for a Senior Software full-stack LAMP/PHP engineer. If you want to work for the 5th most popular web property in the world with nearly half a billion monthly uniques (and probably the largest single-install open-source PHP project), you should really consider working here
Job description: Senior Software Developer at the Wikimedia Foundation
Be a part of a newly forming team that will be tasked to entice new authors to Wikipedia. You will create responsive UI-driven software components in a highly iterative environment to support user engagement experimental features for Wikimedia websites using JavaScript, CSS3, HTML5 and PHP.
Some of the projects you’ll work on:
- Develop new experimental editor engagement features for Wikimedia sites.
- Extend MediaWiki software to support new experimental features.
- Participate in periodic technology meetings for design, development and testing of experimental features.
- Scrum master for development team.
Required Qualifications
- 5+ years of web development experience, including front-end development (JavaScript/jQuery/HTML5/CSS3), and server-side development using PHP/MySQL.
- 5+ years experience with rapid iterative software development processes, ability to quickly grasp requirements, derive UI workflow and develop functionality.
- Experience deploying code into high transaction volume production environments.
- Experience with A/B testing, cross-browser testing, debugging.
- Knowledge of Agile Methodologies such as Scrum and Extreme Programming (XP). ScrumMaster training preferred.
- Familiarity with version control systems/continuous integration tools (we use Git/Gerrit/Jenkins).
- Must be able to meet aggressive timelines, iterate rapidly, and switch rapidly across multiple projects.
- Strong communication skills: Must be able to communicate clearly and effectively; have strong written and oral communication skills as well as be able to collaborate easily within a cross-functional team.
- B.S. or M.S. Computer Science or related field preferred.
Extra Points if you have:
- Experience with MediaWiki and other open source PHP-based content management systems
- Experience in the Wikipedia community
- Experience contributing to a major Open Source project
- Understanding of free culture / free software /open source
- Experience working with online volunteers.
- Experience with wikis and participatory production environments.
- Good sense of humor
- Being creative, highly motivated, hard-working and ability to work effectively in multiple cultural contexts are great assets
- Comfortable working in an open, highly collaborative, consensus-oriented environment
Please provide URLs to any existing open source software work you may have done (your own software or patches to other packages) if possible. We’d love to see what you can do!
About the Wikimedia Foundation
The Wikimedia Foundation is the non-profit organization that operates Wikipedia, the free encyclopedia. According to comScore Media Metrix, Wikipedia and the other projects operated by the Wikimedia Foundation receive more than 482 million unique visitors per month, making them the 5th most popular web property worldwide. Available in more than 270 languages, Wikipedia contains more than 21 million articles contributed by a global volunteer community of more than 100,000 people. Based in San Francisco, California, the Wikimedia Foundation is an audited, 501(c)(3) charity that is funded primarily through donations and grants. The Wikimedia Foundation was created in 2003 to manage the operation of Wikipedia and its sister projects. It currently employs 130 staff members. Wikimedia is supported by local chapter organizations in 38 countries or regions.
Apply by clicking on this link or contact me personally. 
Why working here is totally awesome
)You should seriously work here.
Besides this slight isn’t exactly going to make me jump ship from my new job back to my old one—just with a different color scheme.