Can an ATS Reject My CV? What Applicant Tracking Systems Really Do

"Did the ATS reject my CV?" is one of the most common explanations people reach for when an application disappears without a response.

Sometimes automated screening is involved. Sometimes it is not.

Applicant tracking system is a broad term for software used to collect and manage candidates through a recruitment process. The exact capabilities depend on the product and how the employer has configured it.

That distinction matters because there is no single universal ATS algorithm that every CV must beat.

What does an ATS actually do?

At a basic level, an ATS stores candidate applications and helps employers manage recruitment.

Many systems can also parse CVs. Parsing means extracting information from the document and turning it into structured data such as:

• name and contact details;
• employers;
• job titles;
• dates;
• skills;
• education.

Recruiters may then search or filter candidate information.

Some systems now include more advanced matching. Greenhouse, for example, documents AI-assisted Talent Matching that compares extracted CV information with recruiter-defined criteria. It also states that its matching feature supports the recruitment team rather than automatically making the hiring decision.

Other products and integrations work differently.

So "the ATS" is not one thing.

Can an ATS automatically reject you?

It can happen in some recruitment workflows, particularly where an application includes screening questions or employer-defined rules.

Examples might include:

• Do you have the right to work in this country?
• Do you hold a required professional qualification?
• Are you willing to work at the stated location?
• Do you meet a mandatory licence requirement?

An employer may configure parts of the recruitment workflow around answers like these.

That is different from the popular idea of an invisible universal CV score that automatically rejects anyone below 80%.

Do not assume that a rejection proves your CV failed a secret ATS test.

Parsing problems are real

A more concrete ATS issue is whether the system successfully reads the document.

Greenhouse's own support documentation lists several formatting features that can contribute to unsuccessful or partial parsing, including graphics, photos, complex tables, headers and footers, text boxes and columned layouts.

Indeed's UK career guidance similarly recommends a simple layout for ATS-oriented CVs and advises against graphics-heavy formats.

You do not need to make your CV ugly.

You do need to make sure the design is not getting in the way of the content.

Are two-column CVs bad for ATS?

They are not guaranteed to fail every ATS.

That claim is too strong.

However, some ATS vendors explicitly list columned layouts among formats that can cause parsing problems. If you are applying through an online recruitment system and have no reason to prioritise an elaborate design, a clean single-column format is the safer choice.

Creative professions may have different needs. You can always maintain a designed portfolio or presentation separately from the CV used for online applications.

Should I put contact information in the header?

Again, this varies between systems.

Some parsing guidance warns that information in headers, footers or text boxes may not be extracted reliably.

Putting your name and main contact information in the normal body of the document removes that risk without costing you anything.

PDF or Word?

There is no universal answer that applies to every employer.

Both PDF and Word documents are commonly accepted by recruitment systems. LinkedIn, for example, accepts Word or PDF resumes for its application workflow.

Follow the file requirements given by the employer first.

If both are accepted, use a properly generated document rather than an image or scanned PDF.

A PDF that visually contains text is not always the same thing as a PDF with clean machine-readable text.

Do keywords matter?

Yes, but the reason is often oversimplified.

Recruitment tools can support keyword search. Greenhouse, for example, documents Boolean candidate search and keyword-based talent rediscovery.

Its newer Talent Matching functionality also uses semantic representations for skills and job titles, which means exact wording is not always the whole story.

The practical lesson is simple:

Use the normal terminology for the work you genuinely do.

If a vacancy asks for "Azure architecture" and your CV describes the same experience only as "cloud work", clearer terminology may help both software and people understand the match.

That does not mean copying "Azure architecture" ten times.

What is ATS keyword stuffing?

Keyword stuffing is adding or repeating vacancy terminology mainly to influence automated screening rather than to explain your experience.

A CV might contain:

Azure, Azure architecture, cloud architecture, enterprise Azure, Microsoft Azure, Azure solutions...

without actually saying what the candidate did.

That may increase the number of words in common with the vacancy. It does not make the candidate's experience more convincing.

A better sentence might say:

Designed the Azure architecture for a customer-facing SaaS platform using App Services, Azure SQL and managed identity.

The terminology is there because the experience is there.

Can I test whether my CV parses correctly?

A simple first check is to copy all text from your PDF and paste it into a plain text editor.

Look for:

• missing sections;
• scrambled columns;
• job dates appearing in odd places;
• headings detached from content;
• missing contact information.

This is not a full ATS test, but it can reveal obvious document problems.

You can also upload the CV into systems that parse it and inspect what information they extracted.

Does an ATS read my CV like a recruiter?

No.

Software can extract and compare information in ways a human does not. A recruiter also interprets context, career progression, unusual experience, writing quality and the overall story.

The safest CV therefore works for both.

Make it easy for software to extract.

Make it useful for a person to read.

What should an ATS-friendly CV look like?

For most conventional roles:

• use clear section headings;
• use a readable font;
• keep the main structure simple;
• avoid unnecessary text boxes and graphics;
• describe jobs with recognisable titles and terminology;
• include relevant skills where they are genuine;
• show those skills in context within your employment evidence.

The last point matters.

An ATS-compatible layout cannot compensate for weak content.

Frequently asked questions

Does every company use an ATS?

No. ATS usage is common, particularly among employers managing significant recruitment volume, but hiring processes vary widely.

Can I hide keywords in white text?

Do not do this. It provides no value to the person reading your application and may make the document look manipulative if discovered.

Do ATS systems understand synonyms?

Some modern matching systems use semantic techniques that can connect related terminology. Others support literal keyword searches. Clear, recognised industry language remains sensible.

Will graphics automatically get me rejected?

No universal rule says that. Complex formatting can cause parsing difficulties in some systems, which is why simpler layouts reduce risk.

Is an ATS score a real employer score?

A score given by a CV optimisation tool is that tool's assessment unless it specifically has access to the employer's recruitment configuration. Treat it as guidance, not a prediction of the employer's decision.

The RoleTune view

ATS compatibility is useful housekeeping.

The bigger question is whether the employer's important requirements are supported by clear, truthful evidence in your CV.

A document that parses perfectly can still be a weak application.