I created a separate résumé for each likely-sounding ad, tailored to the particular qualifications listed. As a rule, I’d read the qualifications they were looking for and tailor a résumé that showed I had around 90 percent of the skills on the company’s wish list. If I claimed every sought-after skill, I figured the HR people or the head of IT might wonder, If he’s that good, why is he applying for such a low-level job?