ATS Resume Formatting Decoded: Workday vs Greenhouse vs Lever vs Taleo (2026 Guide)

Why one resume can't pass every ATS

Recruiters use Applicant Tracking Systems to manage application volume, but every major ATS parses your resume differently. The exact same .pdf will look polished in Greenhouse and turn into scrambled gibberish in Workday. That's why so many strong candidates are silently filtered: the resume is fine, the parser isn't.

Knowing which ATS each employer uses lets you format defensively. Look at the URL of the application page — myworkdayjobs.com, greenhouse.io, lever.co, taleo.net, icims.com, ashbyhq.com — and choose your format before submitting.

Workday (myworkdayjobs.com)

Workday powers Walmart, Amazon, Netflix, most large banks and a huge slice of the Fortune 500. It's also the most punishing parser:

• Single column only. Two-column layouts get read across both columns at once and turn into nonsense.
• Standard section headers exactly: "Work Experience," "Education," "Skills." Creative headers fail.
• No tables, text boxes, or graphics. Workday treats those as images.
• Submit .docx whenever you have the choice — Workday's .pdf parsing is the weakest of the big five.
• Expect to re-type everything into the application form. Workday seeds the form from your resume, then ignores it.

Greenhouse (greenhouse.io) and Lever (lever.co)

These two power most modern tech companies. The parsers are forgiving — but the keyword scoring is brutal:

• Both handle .pdf and .docx well; .pdf is fine as long as it's text-based, not scanned.
• Greenhouse weights your most recent role heavily. Bury the JD keywords there, not in a skills wall.
• Lever scores you on title-similarity. If you can defensibly title yourself closer to the JD title, do.
• Mirror 8–12 must-have keywords from the JD in your top role's bullets — not as a stuffed list.

Taleo (taleo.net, jobs.oracle.com) and iCIMS (icims.com)

Older systems still running at huge enterprises, healthcare, financial services and manufacturing. The most conservative formatting wins:

• Taleo: .docx only. .pdf parses badly. Use "Work Experience" verbatim — "Professional Experience" can break job-history detection.
• iCIMS: avoid headers and footers — contact info inside them is frequently missed. Keep everything in the document body.
• Spell out abbreviations the first time: "Search Engine Optimization (SEO)," "Project Management Professional (PMP)."
• Dates in full "January 2022 – March 2024" format. Numeric "1/22–3/24" breaks date parsing.

Ashby (ashbyhq.com) — the new kid

Ashby is the ATS most fast-growing startups have moved to in 2025–2026. The parser is best-in-class — but Ashby's keyword scoring is unusually strict because recruiters customize the scorecard per role.

Lead with quantified outcomes ("cut churn from 9% to 3% in 6 months"). Ashby's UI ranks resumes by recruiter-defined signals, and outcome density is the easiest signal to win on.

The resume format that survives all five

When you don't know the ATS — or you're applying through a job board that hides it — default to this format and you'll parse cleanly almost everywhere:

• Single column. One page if you have <10 years of experience, two pages if more.
• Standard section headers: Summary, Work Experience, Education, Skills.
• Calibri, Arial, Garamond, Georgia, or Times New Roman, 10–12pt body.
• Contact info in the document body, never in headers or footers.
• No tables, no text boxes, no graphics, no logos, no photos.
• Full month-year dates. Outcome-led bullets. .docx file format.