Key Takeaways

  • 75% of U.S. employers use automated applicant tracking systems to screen resumes before a human reviews them (Harvard Business School & Accenture, 2021)
  • The most common ATS failures are missing keywords, incompatible formatting, and incorrect file types
  • ResumeGeni scores your resume across 8 parsing layers — modeled on the same steps enterprise ATS platforms like Workday, Greenhouse, and Taleo use to evaluate candidates

How ATS Resume Scoring Works

Applicant tracking systems parse your resume into structured data — extracting your name, contact info, work history, skills, and education — then score how well that data matches the job requirements. Many ATS rejections happen because the parser couldn't extract critical fields, not because the candidate wasn't qualified.

LayerWhat It ChecksWhy It Matters
Document extractionFile format, encoding, readabilityCorrupted or image-only PDFs fail immediately
Layout analysisTables, columns, headers, footersMulti-column layouts break field extraction
Section detectionExperience, education, skills headingsNon-standard headings cause sections to be missed
Field mappingName, email, phone, dates, titlesMissing contact info is a common cause of immediate rejection
Keyword matchingJob-specific terms, skills, certificationsKeyword overlap affects recruiter search visibility and ATS scoring
Chronology checkDate ordering, gap detectionReverse-chronological order is expected by most ATS
QuantificationMetrics, numbers, measurable outcomesQuantified achievements help human reviewers and some scoring models
Confidence scoringOverall parse quality and completenessLow-confidence parses get deprioritized in results

Frequently Asked Questions

Is ResumeGeni free?
Yes. ResumeGeni is currently in beta — ATS analysis, scoring, and initial improvement suggestions are free with no signup required. Full guidance and saved reports may require a free account.
What file formats are supported?
PDF, DOCX, DOC, TXT, RTF, ODT, and Apple Pages. PDF and DOCX are recommended for best ATS compatibility.
How is the ATS score calculated?
Your resume is processed through an 8-layer parsing pipeline that extracts structured data the same way enterprise ATS platforms do. The score reflects how completely and accurately your resume can be parsed, plus how well your content matches common ATS ranking criteria.
Can ATS read PDF resumes?
Yes, but not all PDFs are equal. Text-based PDFs parse well. Image-only PDFs (scanned documents) and PDFs with complex tables or multi-column layouts often fail ATS parsing. Our analyzer will flag these issues.
How do I improve my ATS score?
Focus on three areas: use a clean single-column format, include keywords from the job description naturally in your experience bullets, and ensure all sections (contact, experience, education, skills) use standard headings.

ATS Guides & Resources

Built by engineers with 12 years of experience building enterprise hiring technology at ZipRecruiter. Last updated .

Senior Full-Stack Engineer

Codazen · Irvine, CA

About Codazen

Want to apply technology in ways that make life more enriching? 

We think the digital experiences that make up more and more of our everyday lives should be seamless and engaging—even magical. Using our unique recipe of specialized skills and digital alchemy, we engineer experiences that help businesses engage with users, and users engage with the world. 

The source of our magic comes from our people. We continually strive to be better versions of ourselves—and have fun while doing it. If a career creating innovative experiences and digital products sounds exciting, we hope you’ll consider joining our amazing team.

Rethink Experience™

Summary 

Codazen is seeking a highly skilled and experienced Senior Full-Stack Engineer to lead the charge in building enterprise-scale applications. You’ll be hands-on in coding, shaping architecture, and delivering high-impact solutions while also serving as a trusted client partner—presenting features, gathering requirements, and ensuring success. Beyond the code, you’ll mentor engineers, champion best practices, and drive quality across projects, making an impact on both our clients and our team.

Role Responsibilities  

  • Consistently deliver enterprise-scale web-based Digital and Enterprise solutions  
  • Leverage breadth and depth of knowledge to drive architecture, design, and implementation strategy decisions at the feature and overall solution level 
  • Build high-performance, web-based applications with React and PHP 
  • Architect the backbone of our applications by building robust backend infrastructure that seamlessly fuels our dynamic user interfaces 
  • Implement secure, scalable APIs using GraphQL 
  • Implement engaging UI leveraging HTML/CSS to layout and style components based on style guide and design comps 
  • Define and implement backend storage models for both SQL and NoSQL databases 
  • Possess the ability to act as a POC, leading client meetings, collecting requirements, and the ability to demo/present new features to the client
  • Promote and drive quality engineering initiatives and best practices 
  • Be an advocate for implementation and process best practices 
  • Evaluate emerging technologies to identify opportunities, trends and best practices that can be leveraged to strengthen our platform and development practices 
  • Promote cross-team and cross-company communication practices that share knowledge and best practices 
  • Deeply understands what drives the business to influence direction and strategy of solutions 
  • Active in coaching and mentoring junior engineers