Sourcing and hiring certain hard-to-find, skilled technology professionals continues to be a battle. The most difficult to secure among today’s pool of tech candidates: Java developers, mobile developers, .NET developers and software developers. These, and many others on Dice's list of top 10 difficult-to-find positions, have ranked high each time we’ve asked America’s tech hiring managers and recruiters for their toughest openings to fill. This raises a particular question: Why isn’t the market fixing the talent gaps? Find out what's causing the same tech skills to stay in high demand and low supply, month after month. Read the July 2012 Dice Report .