TL;DR
- The URL domain fingerprints the ATS. myworkdayjobs.com, greenhouse.io, lever.co and workable.com each name the parser sitting behind the form.
- Workday makes you re-key your CV into typed fields, and that text is what gets scored, not the PDF you uploaded.
- Three confirming tells remove any doubt: the parse spinner, the upload limit, and the confirmation email sender domain.
When we built CVPilot's CV parser, the first surprise was how little the pretty PDF mattered on some platforms. Upload the same file to ten Applicant Tracking Systems and you get ten different reads, and a couple barely open the file at all. The form in front of you leaks which engine you are dealing with, and it starts with the URL in the address bar. Read that fingerprint and you know what to optimise before you fill in a single field.
You have found a job you actually want. You click Apply, and a form loads that looks nothing like the last one. Before you type a single word, that form has already told you which robot will read your CV first.
Most applicants never notice. They paste the same CV into every portal and hope for the best. The sharp ones read the signals hiding in plain sight and adjust before they submit.
This is a detective guide. By the end you will glance at an application form and know, within seconds, whether a Workday, Greenhouse, Lever or iCIMS system is standing between you and the recruiter. Then you will know exactly what to change.
Why the ATS behind the form matters more than the form itself
An Applicant Tracking System is the software that receives, parses, ranks and stores your application. Every large UK employer runs one, and they do not all behave the same way. A CV that sails through one can stall in another.
The difference is not cosmetic. Some systems read your PDF cleanly, others mangle two-column layouts, and a few ignore your uploaded file almost entirely in favour of text you re-key by hand. Knowing which one you face changes what you optimise.
Here is the contrarian bit most guides skip. When a form makes you re-type your entire history after uploading a CV, that re-keyed text is what gets scored, not your beautiful PDF. The upload becomes an attachment a human might glance at later. The fields you fill in are the actual application.
Key Takeaway: The ATS is the first reader of your CV, and each platform reads differently. Identify it before you apply and you stop optimising blind.
Signal one: the application URL domain
This is the fastest tell and the most reliable. The moment you land on the application page, look at the address bar. The ATS almost always hosts the form on its own domain or a recognisable subdomain.
You will often see the employer redirected away from their careers page to a third-party URL. That URL is a fingerprint. Read the domain and you have named the system before reading a single form field.
Keep this map handy. Match the domain to the platform, then apply the adjustment in the third column.
| URL domain you see | ATS it belongs to | What to do differently |
|---|---|---|
| myworkdayjobs.com | Workday | Expect to re-key everything. Perfect the typed fields, not just the PDF. |
| greenhouse.io / grnh.se | Greenhouse | Clean parser. Use a simple single-column CV and answer custom questions carefully. |
| lever.co / jobs.lever.co | Lever | Strong parsing. Keep formatting plain and let the LinkedIn autofill check itself. |
| jobvite.com | Jobvite | Older parser. Avoid tables and headers or footers that hold contact details. |
| icims.com | iCIMS | Legacy fields. Keep job titles standard and expect a long multi-step form. |
| workable.com | Workable | Decent parser. Fill the knockout questions honestly, they gate your application. |
| teamtailor.com | Teamtailor | Design-led forms. Content over layout, and expect optional video or questions. |
| pinpointhq.com | Pinpoint | Modern parser. A clean PDF uploads well, so review the auto-filled fields. |
| ashbyhq.com | Ashby | Excellent parser. Keep it simple and check the structured data it extracts. |
| smartrecruiters.com | SmartRecruiters | Reliable parsing. Mind the mandatory screening questions before you submit. |
One caveat worth remembering. A company can embed the form inside its own branded careers page using an iframe, so the visible URL may not change. When that happens, the other signals below give you the answer.
Key Takeaway: The domain is your quickest identifier. Learn ten domains and you will recognise the ATS on most UK applications at a glance.
Signal two: the look and behaviour of the form
When the URL hides behind a branded wrapper, the form's shape gives it away. Each platform has a house style that is hard to disguise once you know what to look for.
The Workday tell: re-keying your whole CV
Workday is unmistakable. You upload your CV, it parses for a moment, and then it asks you to confirm or re-enter every role, date and responsibility by hand. The Work Experience section stretches on with individual fields for each position.
If you find yourself retyping your career into little boxes, you are almost certainly in Workday. Treat those boxes as the real submission and write them as carefully as you wrote the CV.
Greenhouse and Lever: short, clean, question-led
Greenhouse forms are famously tidy. A single upload field, autofilled name and email, then a short set of custom questions the employer added. The parser is reliable, so a simple CV comes through intact.
Lever looks similar and behaves well too. Both reward substance over styling, which is why a single-column, standard-heading CV performs best in them.
iCIMS and Jobvite: the long, dated multi-step journey
Older systems feel older. iCIMS and Jobvite tend to spread the process across several pages with progress bars, EEO questions and dated form styling. Their parsers are less forgiving of tables and columns, so plain formatting matters most here.
Key Takeaway: If the form makes you re-key everything, it is Workday and the typed text is what counts. If it is short and question-led, it is likely Greenhouse or Lever and your clean CV will carry.
Signal three: the parse step, upload limits and the confirmation email
Three smaller clues confirm what the domain and layout suggested. Together they remove any doubt.
The "parse my CV" moment
Watch what happens the instant you upload. A brief spinner followed by pre-filled fields tells you the parser has read your file. Whether those fields come back accurate tells you how well your CV is structured for machines.
If the parse scrambles your job titles or drops your dates, that is a warning. A human recruiter may never fix it, so correct every mis-parsed field before you submit.
File type and upload limits
The upload box itself leaks information. Modern systems such as Ashby, Pinpoint and Greenhouse happily take a PDF up to several megabytes. Older platforms sometimes cap uploads tightly or nudge you towards .doc, a sign the parser is dated and picky.
When a form prefers Word or limits you to a small file, take the hint. Strip graphics, keep it text-first, and favour a lean document the older engine can digest.
The confirmation email sender
The final proof arrives after you submit. Check the sender domain on the confirmation email. A message from a myworkday, greenhouse or icims address confirms the platform beyond argument, and it is useful intelligence for your next application to the same firm.
Key Takeaway: The parse result, the upload rules and the confirmation sender each confirm the ATS. Read all three and you never guess again.
What to change once you know
Identification is only half the job. The point is to adjust your application to the system in front of you. Here is how the tailoring shifts.
For Workday, pour your energy into the typed fields. Match your job titles to the advert's language, write full bullet points inside those boxes, and do not assume the attached PDF will be read at all. Our Workday guide walks through the re-keying trap step by step.
For Greenhouse, Lever and the other clean parsers, keep the document simple and let it do the work. Single column, standard headings, no text buried in headers or footers. The Greenhouse guide covers the custom-question fields that quietly influence your ranking.
For older engines like iCIMS and Jobvite, formatting discipline wins. Remove tables, columns and graphics entirely, and put your contact details in the body rather than a header. When in doubt, test your file against a scanner first.
That is where a tool earns its place. CVPilot scores your CV the way these parsers do and flags the exact lines that will trip a given system. You can browse every platform in our ATS platform guides and match your CV to the one you have identified.
Key Takeaway: Same CV, different emphasis. Workday needs strong typed fields, clean parsers need a simple document, and legacy systems demand strict formatting discipline.
Put it into practice on your next application
Start treating the application form as evidence, not an obstacle. Read the URL, watch the parse, note the confirmation email, and log which employers use which system. Within a few applications you will recognise them instantly.
The reward is real. You stop sending one generic file into ten different machines and start submitting a version each system can actually read. If you want the full grounding, our complete ATS-friendly CV guide ties the tactics together.
Detective work only pays off if you act on the clues. Identify the ATS, adjust the CV, and let CVPilot confirm the file is clean before you hit submit.
Ready to optimise your CV? Try CVPilot free and see your ATS score in under 60 seconds.
Read the full guide: https://cvpilot.pro/blog/which-ats-is-this-company-using?utm_source=devto&utm_medium=organic&utm_campaign=which-ats
Which ATS has burned you before, and did you spot it from the form or only after the rejection?
Full guide: https://cvpilot.pro/blog/which-ats-is-this-company-using
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