What Is an ATS and Why Does It Matter?

An Applicant Tracking System (ATS) is software that companies use to collect, sort, and filter job applications before a human recruiter ever sees them. According to Jobscan, over 98% of Fortune 500 companies use ATS, and studies suggest that up to 75% of resumes are rejected by these systems before reaching a human.

The good news? ATS isn't magic — it's pattern matching. Once you understand the rules, you can design a resume that passes consistently.

The Top ATS Killers to Avoid

Many beautifully designed resumes fail ATS instantly because of formatting choices that confuse the parser. Here's what to eliminate:

  • Tables and columns — ATS parsers often read left to right across columns, scrambling your content
  • Text boxes and graphics — these are invisible to most parsers
  • Headers and footers — important contact info placed here may be missed
  • Fancy fonts and icons — stick to standard fonts like Arial, Calibri, or Georgia
  • JPG or PNG files — always submit PDF or .docx unless the portal specifies otherwise
  • Non-standard section headings — use "Work Experience," not "My Journey" or "Where I've Been"

The Keyword Strategy

ATS ranks resumes based on keyword matches with the job description. This means your resume must speak the same language as the posting. Here's how to extract and use keywords effectively:

Copy the full job description into a text document. Identify nouns and noun phrases that describe skills, tools, qualifications, and responsibilities. Pay special attention to words that appear multiple times — frequency signals importance. Then naturally integrate these into your resume's summary, skills section, and experience bullets.

For a software engineering role, that might mean including phrases like "CI/CD pipeline," "Agile development," "RESTful APIs," and "cross-functional collaboration" — all lifted directly from the job description.

ATS-Friendly Resume Structure

The safest structure for ATS compliance is a clean, single-column format with these sections in order:

  • Contact Information — Name, phone, email, LinkedIn URL, city/state
  • Professional Summary — 3–4 sentences packed with keywords
  • Skills — A clean list or two-column list of hard skills and tools
  • Work Experience — Reverse chronological, with achievement-focused bullets
  • Education — Degree, institution, graduation year
  • Certifications — Relevant credentials and the issuing body

Writing Achievement-Focused Bullets That ATS and Humans Love

Each bullet under your work experience should follow the formula: Action Verb + Task + Quantified Result. For example: "Reduced customer onboarding time by 40% by redesigning the self-service portal, resulting in a 25% increase in user activation rates." This format satisfies ATS keyword requirements while also compelling the human recruiter who reads it next.

Testing Your Resume Before You Apply

Before submitting, run your resume through a free ATS checker like Jobscan or Resume Worded. These tools compare your resume to the job description and give you a match score. Aim for 70%+ before applying. Talenlio's AI can do this automatically, rewriting your bullets and summary to hit the right keywords for each application.

Remember: The goal isn't to game the system — it's to clearly communicate that you're qualified. ATS optimisation forces you to be precise and relevant, which ultimately makes you a better candidate.