As Director of User Experience my team is responsible for the look and feel of the Wikimedia Foundation projects in conjunction with our community. This includes working with the Engineering and Product Management group to envision new projects and features as well as fine tune existing ones based on needs we've identified and conversations we have with the communities of the sites the foundation helps to enable.
Design is important to the Wikimedia Foundation and we are working to grow our team to help further enable a better user experience through the foundation's projects, if you are interested in becoming a part of our team please don't hesitate to contact us
Disclaimer: I work for or provide services to the Wikimedia Foundation, and this is the account I try to use for edits or statements I make in that role. However, the Foundation does not vet all my activity, and edits, statements, or other contributions made by this account may not reflect the views of the Foundation.