ATS System Guide (2026)
Every major ATS ranks resumes differently. Workday uses skills-based matching. Taleo uses Boolean keywords. Greenhouse scores frequency. Here are specific tips for each system — not generic advice.
7
ATS systems covered
75%+
of Fortune 500 use these
Free
ATS resume scan
Workday
10,000+ companies
Workday is an enterprise HCM platform used by over 10,000 large companies globally. It uses skills-based matching and is sensitive to date formatting and structured field parsing.
Greenhouse
7,500+ companies
Greenhouse is the most popular ATS among high-growth tech companies and SaaS startups. It focuses on keyword frequency and integrates with GitHub and LinkedIn signals.
Lever
5,000+ companies
Lever is popular among tech startups and SaaS companies. It uses NLP-based parsing and social profile enrichment, rewarding clear writing and quantified impact.
Oracle Taleo
15,000+ companies
Oracle Taleo is the most widely deployed enterprise ATS globally, used by Fortune 500 companies across manufacturing, government, and healthcare. It uses strict keyword matching.
iCIMS
4,000+ companies
iCIMS is widely used in healthcare, financial services, and logistics. Its skills matching engine ranks candidates by explicit skills density and profile completeness.
SmartRecruiters
4,000+ companies
SmartRecruiters is popular in retail, hospitality, and mid-market tech. It uses AI-based semantic matching and integrates with LinkedIn and video interview platforms.
BambooHR
30,000+ companies
BambooHR is the most common ATS for small and medium businesses. It has basic keyword matching and places high weight on culture fit signals and referrals.
Why ATS-Specific Tips Matter
Over 90% of Fortune 500 companies use an ATS to screen resumes before a human reads them. Each system has different parsing rules, ranking algorithms, and keyword matching behaviour. A resume that scores 85% in Greenhouse may score 40% in Taleo for the same role — because Taleo requires exact Boolean matches while Greenhouse weights keyword frequency.
Generic resume tips (use action verbs, quantify impact) help everywhere. But system-specific optimisation — knowing that Workday fails on custom date formats, or that iCIMS surfaces your first 2 sentences prominently — is what separates a 40% match from an 85% match.
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