Applicant Tracking Systems (ATS) are used by over 99% of Fortune 500 companies to filter resumes before a human ever reads them. If your resume isn't optimized, you could be getting filtered out — even if you're the perfect fit for the role.

What is an ATS?

An ATS is software that automatically scans, filters, and ranks resumes based on keywords, formatting, and other criteria set by recruiters. Its primary job is to help companies manage the flood of applications they receive for every open position.

Understanding how an ATS reads your resume is the first step to making sure yours is seen by a real person.

Key ATS optimization tips

1. Use a clean, simple layout

Avoid tables, graphics, headers/footers, columns, and text boxes. ATS parsers are often unable to read these elements correctly and may skip critical information entirely. Stick to a single-column layout with clear section breaks.

2. Mirror language from the job description

Read the job posting carefully and match the exact terminology used. If the posting says "project management," don't substitute "managed projects." ATS systems look for exact phrase matches. Use both the full term and its acronym (e.g., "Search Engine Optimization (SEO)").

3. Use standard section headings

Stick to conventional labels: Work Experience, Education, Skills, Certifications. Creative headings like "My Story" or "Where I've Been" confuse ATS parsers and cause your information to be misread or ignored.

4. Choose the right file format

Unless the employer specifies otherwise, submit your resume as a .docx file. Many ATS systems parse Word documents more accurately than PDFs, especially PDFs exported from design tools like Canva or Figma.

5. Include a dedicated skills section

A clearly labeled Skills section makes it easy for both the ATS and the recruiter to see your qualifications at a glance. Include a mix of hard skills (e.g., "Python," "SQL," "Adobe Photoshop") and soft skills relevant to the role.

6. Quantify your achievements

Numbers stand out — both to ATS algorithms and to human readers. Instead of "Managed a team," write "Managed a team of 12 engineers, reducing bug backlog by 40% in 6 months." Metrics demonstrate real impact.

Common ATS mistakes to avoid

• Submitting a PDF created in a design tool (graphics, icons, fancy fonts)
• Using images of text instead of actual text
• Putting contact information in the header or footer
• Using "creative" section names
• Submitting a generic, one-size-fits-all resume for every application

How CVSHA helps

CVSHA's AI-powered builder automatically applies ATS-safe formatting, suggests role-specific keywords based on your target job description, and shows you your ATS compatibility score before you hit send. Build your optimized resume for free at cvsha.com.