What is ATS and do you really need to tailor your CV?

The short answer

ATS stands for Applicant Tracking System — the digital system employers use to receive, sort, and manage job applications. Yes, you should tailor your CV per application if you want to maximise your chance of reaching a human reader. That doesn't mean rewriting your entire CV every time, but making sure the keywords from the posting actually appear in your CV.

What ATS actually does

An ATS isn't an AI filter with opinions. It's a database tool. When you submit a CV, three things happen:

The system parses your CV and tries to extract structured data (name, contact details, experience, education, skills).
The recruiter or HR person searches the database for specific terms related to the role.
Your application is ranked by how well it matches the search.

That means "ATS filtering" isn't a black hole that discards CVs based on magical rules. It's simply that a human is searching a database, and if your CV doesn't contain the terms they're searching for — you don't show up.

Why tailoring works

A study from Monster published in December 2025 showed that 77% of job seekers worry their CV gets filtered out before reaching a human. The concern is reasonable: if the recruiter searches for "project manager Agile SaaS" and your CV says "team lead for web platform" — even if the experience is equivalent — you won't appear in the results.

Tailoring is about matching language, not changing substance. The same experience can be described differently. If the posting says "project manager," your CV should say "project manager" rather than "team lead" — even if the roles were practically identical.

Three rules that work

Pick 3–5 key terms from the posting. Usually it's the job title, 2–3 core tools or methods, and an industry term. These should appear verbatim in your CV.

Tailor the title line of your CV. If the posting asks for "Product Manager" and your most recent role was "Head of Product" — use "Product Manager (Head of Product)" in your CV. The database searches for the posted title; match it.

Mirror the posting's structure in your skills section. If the posting lists "requirements" and "nice to have," organise your skills so it's easy to check off against both.

Common misconceptions

ATS doesn't filter out images and well-designed CVs. Modern ATS platforms (Workday, Lever, Greenhouse) handle PDF and complex layouts well. The old advice about "plain text only" is outdated. That said: don't use images of text, and make sure your headings follow standard conventions (Experience, Education, etc.) so parsing is accurate.

Tailoring isn't manipulation. You're not rewriting your experiences — you're choosing the words that describe them. Same competence, phrased so it's searchable.

Generic AI CVs are the real problem. Resume Now reported in 2025 that 62% of HR managers say generic AI CVs often lead to rejection. Using AI without tailoring means you face both ATS filtering and recruiter irritation — a double loss.

Frequently asked questions

Do all companies use ATS?

Virtually all companies with more than 50 employees use some form of ATS. Smaller companies often don't, but then a human reads directly — and tailoring helps you there too.

How do I know if my CV is ATS-friendly?

Copy the text from your CV and paste it into a plain text editor. If the structure looks garbled or experiences get mixed up — the ATS will parse it poorly too. Tools like Vikkla run this test automatically.

Can a well-designed CV hurt my chances?

Rarely, if you use standard headings and clean typography. Problems arise when CVs use columns or tables in ways that cause the ATS parser to scramble the order.

Do I need to rewrite my entire CV for each job?

No. 10–20 minutes per application is enough to adjust the title, front-load the skills section with relevant terms, and angle the first sentence of each experience towards the posting's language.

Sources

Monster. 2026 State of Resumes Report. December 2025. n=1001, Pollfish survey. Verified in Vikkla's source compilation.
Resume Now. AI and the Applicant Report. March 2025. n=925. Verified in Vikkla's source compilation.