The bottom line is that an effective resume conveys the ability to contribute by solving problems as well as blending that with the technical knowledge to start the job. The technical knowledge should not be too narrowly focused because that limits opportunities. After all, in technology-based enterprises, there is constant learning.
Finally, I have used myself as an example here because I do not want to reveal any personal information about someone else. I am not seeking a job, but rather using my background to illustrate effective resume-writing concepts. Hope this article helps you in these lean times.