How to Compare Job Descriptions and Find the Skills Employers Repeat

01 / DEFINITIONS

What are you actually comparing?

A source requirement is a statement found in a specific posting. A pattern is a meaning that appears across more than one job, even when the wording differs. Frequency is the number of distinct jobs in your sample that contain that pattern—not the number of times a phrase repeats inside one posting.

This separation matters because occupational information naturally spans different categories. The U.S. Department of Labor’s O*NET Content Model distinguishes skills and knowledge, experience and credentials, work activities, and work context. That is a useful reminder not to collapse every sentence into a single “skill” bucket.¹

02 / SAMPLE

How should you build the job sample?

Start with jobs you could reasonably compare: similar role families, levels, or transition targets. Keep each full description, not just the qualifications list. Responsibilities, credentials, work conditions, and location language may carry distinct signals.

1. Choose a coherent question.For example: “What repeats across senior security analyst roles I would consider?”
2. Collect the complete current postings.Record the title and source so you can return to the original wording.
3. Keep the sample visible.Five relevant jobs can answer a narrow question; they cannot describe the entire labor market.

03 / NORMALIZATION

How do you group different wording without erasing meaning?

Group phrases only when they ask for substantially the same capability. “Present technical decisions to executives” and “communicate architecture tradeoffs to senior leaders” may support one technical-communication pattern. “Python” and “Java” should stay separate because both are programming languages but not interchangeable tools.

04 / COUNTING

How should repeated skills be counted?

Give a pattern one vote per job. If one description mentions stakeholder leadership four times, that is still one job containing the pattern. Report the numerator and denominator—such as 3 of 5 jobs—so the sample remains visible.

A higher count means the pattern repeated more often in this sample. It does not establish market demand, hiring probability, importance to every employer, or the quality of your evidence.

05 / EVIDENCE

What is evidence, and what is interpretation?

Evidence is the exact excerpt, the job it came from, and the stated strength such as required or preferred. Interpretation is the normalized label, category, relationship to another phrase, or recommendation you derive from those excerpts.

Keep both, but do not confuse them. A reader should be able to challenge the interpretation by returning to the source text. That is why Scan Careers attaches exact source excerpts to detected patterns and validates that a cited excerpt came from the submitted job.

06 / YOUR BACKGROUND

How do you compare the pattern with your experience?

Use reviewed, specific evidence: a project, responsibility, credential, or outcome you can explain. Mark a gap when the evidence is absent, not merely when your résumé uses different wording. Preserve factual constraints—such as required authorization, location, schedule, travel, or licensing—as separate checks rather than treating them as skills to learn.

Official occupation profiles can add broader context after you finish the posting-level comparison. The Bureau of Labor Statistics Occupational Outlook Handbook organizes occupations by categories and entry-level education and provides occupation profiles, but it does not replace the actual requirements in a specific employer’s posting.²

07 / LIMITATIONS

What can a small sample tell you—and what can’t it tell you?

A small sample can show what repeats among the jobs you selected. It may be useful for prioritizing research, résumé evidence, or interview preparation. It cannot establish the prevalence of a requirement across an occupation, geography, industry, or time period.

• Job descriptions may be stale, incomplete, copied, or internally inconsistent.
• Similar terms may hide different levels of responsibility.
• Different seniority levels can distort a combined sample.
• AI can misclassify wording, so exact excerpts and human review remain necessary.
• An employer may evaluate equivalent experience differently from you or the tool.

08 / CHECKLIST

What is the repeatable workflow?

1. Write the narrow comparison question.
2. Collect complete, current descriptions for comparable jobs.
3. Extract skills, credentials, experience, responsibilities, and work conditions.
4. Normalize equivalent wording conservatively.
5. Count each pattern once per job.
6. Keep exact excerpts beside every interpretation.
7. Compare only against reviewed career evidence.
8. Record sample size, uncertainty, and factual constraints.
9. Choose one next action, then refresh the sample when your target changes.