The Job Description Mistakes That Quietly Repel Good Candidates.

Introduction

A role sits open for six weeks. The applicants who do trickle in are wrong for the job, the ones you wanted never applied, and everyone blames the market. More often, the posting itself was the problem. It was vague where it needed to be specific, generic where it needed to sell, and invisible to the exact people you were trying to reach.

A job description is the first impression a candidate has of your company and the filter an applicant tracking system uses to decide who even reaches you. Get it wrong and both jobs fail at once. This guide covers how to write a job description that attracts the right people, and the quiet mistakes that push them away before they ever hit apply.

A job description has to sell and screen at the same time

Before fixing the mistakes, it helps to be clear on what a job description is actually for. It does two jobs at once. It sells the role to the right person, and it screens out the wrong ones.

Keep it vague and you attract the wrong people. Keep it thin on the terms candidates search for and the right people never find the posting at all. Knowing how to write a job description well means holding both goals in mind on every line: is this making the role appealing, and is it helping the right person self select in?

Mistake one: recycling an old posting

The most common shortcut is opening the last JD for a similar role, swapping the title, and posting it. The result reads like what it is, a generic ad that could belong to any company. Candidates have seen a hundred of them and skim straight past.

A role specific description does the opposite. Tailored to the actual role, industry and seniority, it signals that you know what the job involves and respects the reader’s time, which is exactly the signal strong candidates look for.

Mistake two: a vague, clever, or internal job title

An inventive title like Marketing Ninja or Growth Wizard may sound fun internally, but nobody searches for it. Neither do candidates search your internal grade names. If the title is not the term people actually type into a job board, your posting simply does not surface.

Use the clear, searchable title candidates look for. It is the single biggest factor in whether the right people ever see the role, and it is the easiest mistake to fix.

Mistake three: filler responsibilities nobody can picture

Lines like other duties as assigned or works well in a fast paced environment tell a candidate nothing. They cannot self assess against filler, so strong people who would have been a fit move on, unsure whether the role is really theirs.

List real, specific duties instead. When responsibilities describe the actual work, the right candidates recognise themselves in the role and the wrong ones rule themselves out, which is precisely the screening you want a JD to do.

Mistake four: an endless wishlist of requirements

Piling every possible skill into the requirements section is one of the most damaging mistakes, and it disproportionately filters out excellent applicants who would have thrived. Long wishlists also shrink your pool, because strong candidates who miss one line often do not apply at all.

The fix is to split must have from nice to have. Keep the must haves genuinely essential and short, and let the rest be preferred. This one change widens your pool and improves fit at the same time.

Mistake five: hiding the basics

Leaving out location, work type, or any sense of what the role offers forces candidates to guess, and many will not bother. State plainly whether the job is on site, hybrid or remote, and where it is based.

Being upfront about the practical details is not a small courtesy. It removes friction, filters out mismatches early, and tells candidates you value their time, all of which lifts the quality of who applies.

Mistake six: writing only for humans, or only for the ATS

Some descriptions read beautifully but never surface in search. Others are stuffed with keywords and read like a robot wrote them. Both miss, because a modern JD has two audiences: the person reading it and the software ranking it.

The balance is to weave the skills and terms candidates actually search for into natural, well written sentences. No stuffing, no keyword salad, just clear language that happens to contain the words people look for. That is how a posting reads well to humans and parses cleanly for an ATS.

Clarity beats length every time

If there is one principle behind how to write a job description that works, it is this: a focused, well organised description consistently pulls better candidates than a long list of everything you could possibly want. Every extra paragraph of filler dilutes the parts that matter. When in doubt, cut.

A quick pre post checklist

• Is the job title the term candidates actually search for?
• Is the summary two or three lines on what the role is and why it matters?
• Are the responsibilities real duties, not filler?
• Are requirements split into must have and nice to have?
• Are location and work type stated plainly?
• Are search terms woven in naturally, without stuffing?
• Does the language comply with the equal opportunity and employment rules where you hire?

Conclusion

Most hiring struggles that get blamed on the market start with the posting. Avoid the six mistakes above, keep the JD role specific and clear, and it will do both of its jobs: pulling in the right people and screening out the rest.

If you would rather not start from a blank page, HRTailor.AI has a free Job Description Maker that turns a role and a few details into a structured, ATS friendly and search aware draft in seconds, with summary, responsibilities, requirements and qualifications ready to edit and post.

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