Technical resumes may seem pretty dry...
Resumes - particularly technically resumes - can seem like rather dry documents. But however dry the resume may appear, the resume has to tell a clear, compelling story. That is, ideally, a story of clear, consistent career progress - leading to the irresistible conclusion for the hiring authority that "I need to interview this person to fill a critical position."
Particularly in challenging times like these, you may be tempted to include absolutely you've ever done in your technology resume - in the (reasonable) hope that something will catch the hiring authority's attention. Unfortunately, while understandable, that approach too often backfires. As I've mentioned previous, hiring authorities - whether external recruiters or in-house HR professionals - are REALLY busy people. They are not, generally, able to take the time to "mine" a resume to get a sense for whether the candidate can solve their problems.
One of the most common problems I see in my client's initial technical resumes is a lack of clear structure. Often, my clients have great information throughout the resume, but it's in unconnected nuggets that can be hard to mine for critical information. Duties and accomplishments are often mixed and formatting may not give a clear vision of which is which.