Applicant Tracking Systems: What They Are and How to Work With Them

Why ATS Software Exists

When a job posting attracts hundreds — sometimes thousands — of applications, no hiring team can manually read every resume. Applicant tracking systems solve that problem by automating the initial intake and screening process. Employers configure the software to flag resumes that contain certain keywords, credentials, or experience thresholds and to deprioritize those that don't.

Understanding this reality is not a reason to game the system dishonestly. It's a reason to present your genuine qualifications in a format and language the software can actually read. For a fuller picture of what happens after you hit 'submit,' see our overview of how the modern hiring process works.

How ATS Software Reads Your Resume

ATS platforms parse your resume — meaning they break it into structured data fields like job titles, employers, dates, and skills. How well that parsing works depends heavily on your formatting choices.

Common formatting pitfalls that confuse ATS parsers include:

• Tables and columns: Many systems read table content out of sequence or skip it entirely.
• Headers and footers: Contact information placed here is frequently missed.
• Images and graphics: Charts, logos, and icons are invisible to most ATS tools.
• Unusual section headings: Labels like 'Where I've Been' instead of 'Work Experience' may not be recognized.
• Non-standard file types: Some systems struggle with heavily designed PDFs.

A straightforward, single-column resume with standard headings and a clean font is the safest baseline. You can still make it visually appealing — just prioritize readability over design complexity.

Tailoring Your Resume to Each Job Posting

A single generic resume is unlikely to clear the ATS for most roles. The most effective approach is to customize your resume for each position by mirroring the language in the job description.

Here's a practical process:

1. Read the job posting carefully and highlight repeated skills, required qualifications, and role-specific terminology.
2. Compare those terms against your current resume language. Where you've done that work or hold that skill, adjust your wording to match.
3. Prioritize hard skills, certifications, and job titles — these are the fields ATS systems parse most consistently.
4. Don't fabricate experience. Only match terms that genuinely reflect your background.

If you haven't yet built your core resume and supporting materials, our job search preparation checklist walks you through everything to have ready before you start applying.

Working Around and Beyond the ATS

Even a perfectly optimized resume isn't guaranteed to advance — competition, internal candidates, and shifting hiring needs all play a role. That's why ATS optimization should be one part of a broader strategy, not the whole plan.

Networking can move your application to a different track altogether. A referral from someone inside the company often results in your resume reaching a human reviewer directly. Our comparison of job boards and networking lays out how both channels work in practice.

If you've been applying consistently but getting little response, the ATS may not be the only factor. Our guide to diagnosing a stalled job search can help you identify what to adjust.