Jeffry is sharp, detail-oriented, thorough, accurate and fast. I was quite impressed with his QA work on our enterprise applications. Jeffry's insightful investigations accelerated the development & QA cycle; he dug deep to create small, yet very clear sets of test parameters to expose the heart of the issue. He exercised good judgement when deciding how to act on his findings, like when to create a bug tracker versus consulting with the developers versus directly with me for clarification on the desired behavior. His test results were clear and complete without being overly verbose. He's an absolute gem!