Applicant Tracking System (ATS): What It Is and How to Beat It

Learn how Applicant Tracking Systems work and how to optimize your resume to get past them. Simple tips to help your application reach human eyes.

Published: March 2026 |

Table of Contents

• Introduction
• What Is an Applicant Tracking System?
• How ATS Software Works
• Why Companies Use ATS
• Common ATS Myths Debunked
• How to Write an ATS-Friendly Resume
• The Importance of Keywords
• Formatting Tips That Work
• File Types: PDF vs. Word
• Advanced Tips for Beating ATS
• Expert Advice
• Frequently Asked Questions
• Conclusion

Introduction

You've spent hours crafting the perfect resume. You've tailored it to the job description, highlighted your achievements, and polished every word. You click "submit" and wait. And wait. And hear nothing.

What happened? Chances are, your resume never reached human eyes. It was screened out by an Applicant Tracking System (ATS) – software that companies use to manage the flood of applications they receive.

Understanding how ATS works is essential for any job seeker today. Over 90% of large companies use ATS software to filter applications. If your resume isn't optimized for these systems, you're invisible to recruiters, no matter how qualified you are.

This guide explains everything you need to know about Applicant Tracking Systems – what they are, how they work, and most importantly, how to make sure your resume gets past them and into human hands.

What Is an Applicant Tracking System?

An Applicant Tracking System (ATS) is software that employers use to manage the recruiting and hiring process. Think of it as a database for job applications. When you apply for a job online, your resume typically goes into an ATS before any human sees it.

ATS software does several things:

• Collects applications: It gathers resumes from company career pages, job boards, and email
• Parses information: It reads your resume and extracts key data – name, contact info, work history, education, skills
• Scores and ranks: It evaluates how well your resume matches the job requirements
• Filters candidates: It eliminates applications that don't meet minimum qualifications
• Organizes candidates: It creates a searchable database recruiters can use to find qualified applicants

Popular ATS platforms include iCIMS, Oracle Taleo, Jobvite, Lever, Greenhouse, and Workday. Each works slightly differently, but they all share the same basic functions.

How ATS Software Works

Understanding the ATS process helps you design a resume that passes through it successfully.

Step 1: You Submit Your Application

When you apply through a company's career portal, your resume is uploaded to their ATS. The system reads the file and extracts information.

Step 2: Parsing and Indexing

The ATS "parses" your resume – it tries to understand the structure and content. It looks for:

• Your name and contact details
• Job titles and companies you've worked for
• Dates of employment
• Education and certifications
• Skills and keywords

If your resume is formatted in a way the ATS can't read, the parsing fails. Your information may be stored incorrectly or not at all.

Step 3: Scoring and Ranking

The ATS compares your resume against the job description. It looks for matching keywords, required skills, and qualifications. Each resume gets a score based on how well it matches.

Step 4: Filtering

Recruiters set filters to eliminate candidates who don't meet minimum requirements. For example, they might filter out anyone without five years of experience or a specific certification. If you don't meet these knockout questions, your application is automatically rejected.

Step 5: Human Review

Only the highest-scoring resumes that pass the filters make it to a recruiter's screen. The recruiter then reviews them manually.

Why Companies Use ATS

ATS software exists for good reasons. Understanding why helps you work with the system rather than against it.

Volume of Applications

A single job posting can attract hundreds or even thousands of applications. Large companies like Google receive millions of applications annually. No human team could manually review every resume.

Efficiency

ATS software screens resumes in seconds, identifying the most promising candidates. This saves recruiters countless hours.

Compliance

ATS helps companies track their hiring practices for legal compliance. They can document why candidates were rejected and ensure fair treatment.

Organization

ATS creates a searchable database of candidates. Recruiters can search for specific skills when new positions open, finding qualified candidates who applied months ago.

Common ATS Myths Debunked

There's a lot of misinformation about ATS. Let's clear up some common myths.

Myth 1: ATS "rejects" resumes

ATS software doesn't reject resumes – it ranks and organizes them. Recruiters set the filters and decide who to contact. ATS just makes the process more efficient.

Myth 2: You need to stuff your resume with keywords

Keyword stuffing – adding dozens of irrelevant keywords – won't help. ATS systems are sophisticated enough to detect this. Focus on relevant keywords that genuinely match your skills.

Myth 3: Fancy formatting helps you stand out

The opposite is often true. Complex formatting can confuse ATS parsers, causing them to misread your information. Simple, clean formatting works best.

Myth 4: PDFs are always bad for ATS

Modern ATS systems can read PDFs effectively, provided they're text-based (not scanned images). However, some older systems still prefer Word documents. Check the application instructions.

Myth 5: ATS is out to get you

ATS is just a tool. It's not trying to reject you – it's trying to help recruiters find qualified candidates. Understanding how it works puts you in control.

How to Write an ATS-Friendly Resume

Follow these guidelines to ensure your resume passes through ATS successfully.

Use Standard Headings

ATS systems look for standard section headings. Use clear, conventional labels:

• Work Experience: or Professional Experience
• Education:
• Skills:
• Certifications:
• Summary: or Professional Summary

Avoid creative headings like "Where I've Been" or "What I Know" – ATS may not recognize them.

Keep Formatting Simple

• Use standard fonts like Arial, Calibri, Times New Roman, or Helvetica
• Font size 10-12 points for body text
• Avoid headers, footers, and text boxes – ATS often can't read content in these areas
• Don't use tables or columns – they confuse parsing software
• Use bullet points (standard round bullets) rather than symbols
• Avoid graphics, images, or logos

Include Relevant Keywords

Study the job description carefully. Identify key skills, qualifications, and requirements. Incorporate these naturally into your resume – in your summary, skills section, and work experience bullet points.

Spell Out Acronyms

Include both the acronym and the full term at least once. For example: "Certified Public Accountant (CPA)" ensures the ATS catches both versions.

The Importance of Keywords

Keywords are the most critical factor in ATS screening. Here's how to optimize yours.

Where to Find Keywords

• Job description: The primary source. Look for required skills, qualifications, and responsibilities
• Company website: Check the About Us and Careers pages for language they use
• LinkedIn profiles: Look at profiles of people in similar roles
• Industry publications: Stay current on terminology in your field

Types of Keywords

• Hard skills: Specific abilities like "Python," "project management," "data analysis"
• Soft skills: Qualities like "leadership," "communication," "problem-solving"
• Education and certifications: "MBA," "PMP," "CPA"
• Job titles: Include variations of relevant titles you've held
• Industry terms: Specialized vocabulary in your field

How to Incorporate Keywords

Don't just list keywords. Weave them naturally into your work experience descriptions. Instead of a separate "Skills" section with a list, show how you used those skills in specific roles.

Formatting Tips That Work

Chronological Format Preferred

Reverse-chronological format (listing your most recent job first) works best for ATS. Functional resumes (focusing on skills rather than timeline) can confuse parsing software.

Dates

Include clear start and end dates for each position. Use month and year format consistently.

Contact Information

Put your name, phone number, email, and location at the very top. Keep it simple – no fancy formatting.

Avoid Special Characters

Stick to standard characters. Symbols, special bullets, and unusual punctuation can confuse ATS parsers.

Save as Plain Text

For maximum compatibility, you can create a plain text version of your resume. It won't look pretty, but it will be 100% readable by any ATS.

File Types: PDF vs. Word

The debate over PDF vs. Word continues. Here's what you need to know.

Microsoft Word (.doc, .docx)

Pros: Universally readable by all ATS systems. Easy for parsing software to extract text.

Cons: Formatting can shift if opened in different versions. Less polished appearance.

PDF (.pdf)

Pros: Preserves your formatting perfectly. Looks professional. Most modern ATS systems handle PDFs well.

Cons: Some older ATS systems may struggle with PDF parsing. Scanned PDFs (images) are completely unreadable.

Best Practice

Unless the application specifically requests a particular format, both are generally acceptable. To be safe:

• Always follow the employer's instructions exactly
• If both are accepted, Word is slightly safer for older ATS systems
• Never submit a scanned image – it must be text-based

Advanced Tips for Beating ATS

• Tailor every application: Don't send the same resume to every job. Adjust keywords and focus based on each job description.
• Use a resume scanner: Tools like Jobscan compare your resume to job descriptions and suggest improvements.
• Include a skills section: A dedicated skills section with relevant keywords helps ATS identify your qualifications quickly.
• Answer knockout questions carefully: Many applications ask "Do you have X years of experience?" Be honest – lying can get you disqualified later.
• Network for referrals: Employee referrals often bypass the ATS entirely. Connect with people at companies you're interested in.
• Apply directly on company sites: Some job boards add formatting that can confuse ATS. Applying directly through company career pages is often cleaner.
• Check for typos: Misspelled keywords won't match. Proofread carefully.

Expert Advice

• Recruiters: "We don't want to miss great candidates. If your resume is clear, well-formatted, and matches the role, the ATS will surface you. Focus on the job description, not fighting the system."
• ATS consultants: "The biggest mistake we see is creative formatting. Use a simple, clean resume. Let your achievements shine, not the design."
• HR professionals: "Knockout questions aren't traps – they're efficiency tools. If you don't meet minimum requirements, it's better to know early rather than waste everyone's time."
• Career coaches: "Treat the job description as your roadmap. Every requirement listed should be addressed somewhere in your resume. Not word-for-word, but clearly covered."
• Resume writers: "Save your resume as both PDF and Word. Apply with whichever the system prefers, but having both ensures you're prepared."

Frequently Asked Questions

Do all companies use ATS?

Most large and mid-sized companies use ATS. Small companies with fewer applications may not. However, it's safe to assume your resume will be screened by software for most corporate jobs.

Can ATS reject me for being overqualified?

ATS doesn't judge qualification – it just matches keywords. A recruiter might decide you're overqualified when reviewing your resume, but that's a human decision, not an automated one.

Should I include a cover letter?

Yes, if requested. However, cover letters often aren't parsed by ATS. Focus your energy on an optimized resume first, then add a cover letter as directed.

How do I know if my resume is ATS-friendly?

Use tools like Jobscan or Resume Worded to test your resume against job descriptions. They'll show you how well you match and suggest improvements.

What if I have gaps in my employment?

ATS doesn't penalize gaps – it just reads what's there. Use a standard chronological format with clear dates. In interviews, you can explain gaps positively.

Can ATS read two-column resumes?

Generally, no. Two-column layouts confuse parsing software, which reads left to right, top to bottom. Information in the second column often gets read out of order. Stick to single-column format.

Should I include my full address?

City and state are sufficient. Including your full street address isn't necessary and raises privacy concerns. Some ATS use location for filtering, so include your general location.

What's the most important ATS tip?

Read the job description carefully and ensure your resume addresses the key requirements. Everything else – formatting, file type, keywords – supports that primary goal.

Conclusion

Applicant Tracking Systems aren't your enemy – they're a reality of modern hiring. Understanding how they work transforms them from an obstacle into a tool you can use to your advantage.

The principles are simple: use clear formatting, include relevant keywords from the job description, and tailor each application to the specific role. When you work with the system rather than against it, your resume has a much better chance of reaching human eyes.

Remember that ATS is just the first step. Once your resume passes the initial screening, your qualifications, experience, and interview performance will determine your success. But you can't get to that stage if your resume never makes it through.

Take the time to optimize your resume. It's an investment that pays off in more interviews and better opportunities.

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