This week, Yahoo! Entertainment is hiring a social editor, while Addmired is in need of a UX artist. Atari is looking for a mobile producer, and Imagination is seeking a healthcare editor. Get the scoop on these openings and more below, and find additional just-posted gigs on mediabistro.com.

For more job listings, go to the Mediabistro job board, and to post a job, visit our employer page. For real-time openings and employment news, follow @MBJobPost.