ATS decides before recruiters do. Learn how to get through.
Before your resume reaches a human, it passes through software that has no interest in your achievements. Understanding how it works is not optional.
Before your resume reaches any human being, it passes through a piece of software that has no interest in your achievements, your personality, or the care you took with the formatting. It is scanning for specific words and phrases. If it does not find them, your application goes into a folder that no human may ever open.
This software is called an Applicant Tracking System, or ATS. Almost every midsize to large company uses one. Many smaller ones do too. And yet most of the career advice given to students and early-career professionals treats the job search as if a human is the first thing that sees their resume. They are not.
How the Logic Works
The employer writes a job description using specific language: required skills, preferred qualifications, job titles, software names, and industry terms. The ATS scans incoming applications for that language. A resume that uses the employer’s words scores higher. A resume that expresses identical qualifications in a different language scores lower, even if the candidate is equally or more qualified.
This creates a real problem for candidates who write well. A resume that says “coordinating cross-functional communication” may not register if the job posting says “stakeholder management.” The candidate has the skill. The resume does not show a match because the vocabulary is different. The system moves on.
The Fix: Language Alignment
Read the job description carefully before writing or revising your resume for that role. Identify the specific terms it uses for skills, responsibilities, and qualifications. Use those terms on your resume, in context, where they accurately reflect your experience. The goal is not to stuff keywords randomly. It is to align your language with the employer’s language in the same way that a good brief aligns with the client’s vocabulary.
Formatting and File Format
Formatting matters as much as language. Tables, text boxes, columns, headers and footers, and graphics can all create parsing errors. A beautifully designed two-column resume can appear nearly blank to an ATS because the system cannot read content inside columns. Clean, single-column formatting with standard section headings is safer for automated screening, even if it looks less visually interesting. Unless an application specifically requests a PDF, submit as a .docx file. Some ATS versions still parse Word documents more reliably.
The Korean Context
For students applying to Korean companies, this applies equally to Korean-language applications. Major Korean 공채 recruitment platforms run similar keyword logic. The job description is the source document. Your resume is the response to it. Make sure they are speaking the same language. Passing the ATS is the cost of entry. Your actual argument for the role begins after you clear that gate.
→ Application strategy, including ATS optimization and resume review, is part of what a 1:1 coaching session covers. The careercomms.com/work-with-me/“>Work With Me page has more on how that works.
Frequently Asked Questions
What is an ATS and how does it affect job applications?
An Applicant Tracking System is software that processes job applications before any human sees them. It parses your resume into structured data, checks for relevant keywords, and filters candidates based on criteria set by the employer. In practice, this means a resume that does not match the system’s parsing expectations or keyword requirements may never reach a recruiter — regardless of whether the candidate is qualified.
How do you optimise a resume to get through ATS?
Use clean formatting without tables, columns, text boxes, or graphics, since ATS parsers handle simple layouts most reliably. Use keywords from the job posting in context — not stuffed into a list, but integrated into descriptions of what you actually did. Use standard section headings (Work Experience, Education, Skills) rather than creative alternatives. And save as a .docx or plain-text PDF rather than an image-based file.
Does optimising for ATS mean sacrificing quality for human readers?
It should not. The changes that help ATS readability — cleaner formatting, specific language, clear structure — also tend to make resumes more readable for humans. The conflict only arises when people interpret ATS optimisation as keyword stuffing, which produces a resume that is technically parseable and unpleasant to read. The goal is a document that both systems can process accurately.