This week, SponsorPay is hiring a PR and communications manager, while Williams Interactive is seeking a senior software engineer. Machine Zone needs a senior operations engineer, and PopCap is on the hunt for a senior software engineer for iOS/Android. Get the scoop on these openings below, and find additional social media jobs on Mediabistro. PR & Communications Manager SponsorPay (New York, NY) Senior Software Engineer Williams Interactive (Cedar Falls, IA) Senior Operations Engineer Machine Zone (Palo Alto, CA) Senior Software Engineer iOS/Android PopCap Games (Seattle, WA) Web ... Read More