Most UK employers filter CVs with applicant tracking software before a person reads them. Learn exactly what an ATS checks, why good candidates get rejected, and how to check your own CV for free.
7 min read · Updated 2026-11-08 · By the JobLens team
If you have applied for jobs online and heard nothing back, there is a good chance a person never saw your CV. Most medium and large UK employers — and nearly all recruitment agencies — run applications through an applicant tracking system (ATS) first. The software parses your CV into fields, scores it against the vacancy, and ranks it. Recruiters typically open the top of the list and stop.
This guide explains what that software actually does, where CVs go wrong, and how to check and fix yours before you apply.
An ATS is a database for applications. When you upload a CV it tries to extract structured data: your name and contact details, each job with employer, title and dates, your education, and a list of skills. Recruiters then search and filter that database — "project manager, Prince2, London, applied in the last 14 days" — or rely on a match score the system calculates against the job description.
Two things follow from this. First, if the parser cannot read part of your CV, that information simply does not exist for the recruiter. Second, if your CV does not use the language the recruiter searches for, you will not appear in their results no matter how strong you are.
Most systems express the match as a percentage. Anything under about 60% is unlikely to be opened; 75% gets you into the conversation; 90% and above puts you near the top of the list. The score is driven mainly by keyword coverage — hard skills, tools, qualifications and the exact phrases used in the advert — and secondarily by job titles, years of experience and whether the parser could read your sections.
Because the score is calculated against each specific vacancy, one generic CV cannot score well everywhere. The candidates who get interviews tailor their CV for every application, which is why doing it quickly matters.
JobLens runs the same kind of comparison the software does. Upload your CV, paste the job description, and you get a match score with the keywords found and missing, a section-by-section breakdown, and a plain-English "recruiter's read" of how a hiring manager would react. The free plan includes 10 AI optimizations a month, so you can also fix what you find.
See your ATS match score, the keywords you are missing and a recruiter's read — free, in under a minute.
Not all, but most organisations with more than a few hundred staff do, as do recruitment agencies and job boards that let employers manage applications on-site. Small businesses are more likely to read every CV by hand.
Either is fine as long as the PDF contains real text (you can select it) rather than an image. If the application form specifies a format, follow it.
No. Length does not affect parsing. Two pages is normal in the UK for anyone with more than a few years of experience.
Do not. Modern systems strip formatting, so the hidden text is visible to the recruiter and looks like what it is. Add keywords only where they are true, in context.
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