What an ATS Actually Checks on Your CV: Myths, Facts and a Checklist

How applicant tracking systems really handle your CV: knockout questions, parsing, recruiter search and ranking. The myths, what formatting matters, and a five-minute check for UK job seekers.

By Vitaliy Kulesh, Founder, Applyd · 17 October 2026

What an ATS is, and who uses one

An applicant tracking system is the database behind a careers page. It receives applications, stores CVs, moves candidates through stages (applied, screened, interview, offer) and sends the emails along the way. Recruiters work in it all day: searching, filtering, leaving notes and sharing CVs with hiring managers.

Almost every large employer has one. Jobscan detected an ATS at 97.4% of Fortune 500 companies in 2026, with Workday used by more than 40% of them. Across the 13,000-plus companies it tracks, Greenhouse (19.0%), Workday (17.5%), Lever (15.6%) and iCIMS (14.4%) lead. UK employers use the same global platforms. Many smaller companies use lighter tools, and some still work from an email inbox.

What actually happens to your CV, stage by stage

1. The application form and knockout questions

Many applications start with questions before you upload anything: Do you have the right to work in the UK? Can you work from the London office three days a week? Do you hold a full UK driving licence? What are your salary expectations and notice period?

Employers can make some of these knockout questions. Workable, for example, lets employers automatically disqualify anyone who answers "No" to a yes/no question, and Greenhouse supports rules that reject candidates automatically based on their answers. This is where most genuinely automatic rejections happen, and why a rejection can arrive minutes after you apply.

Answer these accurately. If a question is a hard requirement you don't meet, the role probably isn't open to you, and answering "yes" anyway will surface at the employer's right-to-work check, which UK employers must carry out before you start.

2. Parsing: turning your CV into fields

When you upload a CV, the ATS extracts the text and tries to split it into fields: name and contact details, job titles, employers, dates, education and skills. Recruiters often look at this parsed version alongside, or instead of, your original file. Parsing works best on plain structure. It struggles with layouts built for the eye rather than for reading top to bottom (see the table below).

3. Search and filters

Recruiters search their ATS much like a search engine: a job title, a few skills or tools, a location, sometimes a qualification. They search new applicants for one job and, just as often, the whole database for people who applied to earlier roles. If your CV says "client onboarding" and the recruiter searches "customer onboarding", you may not appear. This is the real reason matching the employer's terms matters.

4. Ranking and match scores

Some systems show a match score or sort applicants against the job's requirements. Treat these as a sorting aid, not a verdict. In a 2025 survey of 25 US recruiters by Enhancv, 44% said their ATS offered automated fit scores, and most of them either turned the scores off or used them only as rough guidance. It's a small sample, but it matches what recruiters commonly report.

5. A person reads it

Then someone opens your CV. In Ladders' eye-tracking study, recruiters spent an average of 7.4 seconds on the first look. CVs with simple layouts, clear section headings, bold job titles and bulleted achievements did best; cluttered layouts, multiple columns and long sentences did worst.

Myths and facts

Formatting: what parses well and what doesn't

None of these gets a CV rejected on its own. They make it harder to parse, harder to find in a search and harder to read in seven seconds.

What a recruiter sees after parsing

Here is what a parser might make of the same work history laid out two ways: once in a single column, and once with a sidebar of skills next to the main column. The second example shows the kind of scrambling that happens when a parser reads across columns instead of down them.

Illustrative example. Nothing in the second version was rejected, but a recruiter searching for "Xero" or reading the parsed record sees a garbled job history, and the CV is less likely to come up in searches.

Job entries that parse cleanly

Write every role the same way, in this order:

Title, employer and location on one line; dates on the next; then bullets. If an employer isn't well known, add a few words of context after the name, such as "(fintech, 400 staff)". Keep the job title you held, and add the standard equivalent in brackets if it was unusual.

Career breaks and employment gaps

Gaps worry candidates more than they need to, but unexplained dates do raise questions for the person reading. The simplest fix is to list a career break like a role, with dates and one honest line: "Career break: caring for a family member" or "Career break: travel and a Python course". The National Careers Service has practical advice on explaining gaps in your work history. Keep it short and factual; you can say more at interview if asked.

Applying through job boards and LinkedIn

Applying through a job board such as LinkedIn, Indeed, Reed or Totaljobs doesn't bypass the employer's ATS: the application usually ends up in the same system as one made on the careers page, sometimes with your profile attached. Everything in this guide still applies. Keep the CV you've uploaded to each board up to date, and where you can, apply on the employer's own site with a CV tailored to the role.

How to check your CV in five minutes

1. The copy-paste test. Select all the text in your CV and paste it into a plain text editor. If sections come out in the wrong order, or text is missing, a parser may struggle too.
2. Contact details in the body. Move your name, phone, email and LinkedIn out of the document header.
3. Every role complete. Each has a job title, employer and dates, in the same format throughout.
4. The advert's must-haves. Are the skills and tools the job lists as essential named on your CV, where they're true?
5. A second opinion. Applyd's free CV fit score compares your CV with a job description and lists the must-haves it can't find.

Keywords: how recruiters actually search

• Job title. Use the advert's wording for the role in your personal statement, where it fits your experience.
• Tools and hard skills by name. "Excel", "Python", "Salesforce", "Xero", "Figma".
• Qualifications. "ACCA", "CIPD Level 7", "PRINCE2", "CSCS card".
• Acronyms both ways, once. "Search engine optimisation (SEO)".
• Location and right to work where they matter for the role.

Nobody searches for "team player" or "hard-working". Show those qualities through results in your bullets instead of listing them.

For a step-by-step method, see how to tailor your CV to a job description.

Notes for UK job seekers

• Right to work. Expect a question about it on most application forms. Employers must check it before you start, so answer accurately.
• Personal details. The National Careers Service advises leaving your age, date of birth, marital status and nationality off your CV.
• Application forms. Many public-sector, graduate and charity roles use application forms with competency questions instead of, or as well as, a CV. People score those answers against set criteria, so give specific examples. The STAR method (situation, task, action, result) helps.
• Salary and notice period. These fields are common and sometimes used as filters. Give a realistic range rather than leaving them blank where they're required.

Frequently asked questions

Do all employers use an ATS?

Most large and medium-sized employers do. Jobscan found one at 97.4% of Fortune 500 companies in 2026. Many small UK businesses still review CVs by email.

Will an ATS reject a two-column CV?

Not usually on its own, but columns can be read in the wrong order, which scrambles the parsed version of your CV and can make it harder to find in searches. A single column is safer.

Should I send my CV as a PDF or a Word document?

Either is fine if the PDF is text-based, meaning you can select and copy the text. If the advert asks for a specific format, use that.

Can an ATS read headers and footers?

Some parsers skip them, so keep your name and contact details in the body of the CV rather than in the document header.

Does an ATS give my CV a score?

Some do, as a sorting aid for recruiters, and many recruiters turn the scores off or treat them as rough guidance. Scores vary by system and usually aren't shown to candidates.

Why did I get a rejection email minutes after applying?

Usually because of a knockout question on the application form, such as right to work, location or a required licence, or because the role had already closed. It's rarely your CV's formatting.

Sources

1. Fortune 500 use applicant tracking systems (2026) — Jobscan
2. Knockout questions — Workable Help Center
3. Auto-reject — Greenhouse Support
4. Study reveals ATS rarely auto-rejects CVs, debunks 75% myth — IT Brief UK, on Enhancv's recruiter survey
5. Eye-tracking study shows recruiters look at resumes for 7 seconds — HR Dive, on the Ladders study
6. Check a job applicant's right to work — GOV.UK
7. How to write a CV — National Careers Service
8. Explain a gap in employment — National Careers Service