In my last two blog, I've discussed effective strategies to position technical core competencies in both IT leadership and hands-on technical resumes. In this blog I'd like to talk about another issue that I see from time to time - including legacy technologies and platforms within the Technical Core Competencies section of your resume.

I do believe in complete Technical Resumes - the nature of the market demands more detail than for non-technical job seekers.

But, as a general rule, I do recommend omitting older or obsolete languages. For example, including COBOL, DOS, Windows 3.1 or Mac OS 9 may, at first glance, give the sense of technical and professional depth. Some job seekers seek to demonstrate that they've been working in technology for a considerable time - and that's understandable.

But the downside is very real. One always wants to focus on the most current, cutting-edge, and marketable techniques. Including older approaches can distract from that. More importantly, including obsolete approaches can raise questions about age - and, given the prevalence of age discrimination in hiring, that's something always best avoided.

So, on balance - unless you're specifically targeting Legacy Technologies - I'd stick with including the more recent, in demand approaches in your toolkit.

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