This week, Offerpop is hiring a business development representative, while PopCap Games needs a senior product manager. Brigade Marketing is seeking a social media manager, and FortressITX is looking for a social media marketing writer. Get the scoop below, and find more 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.