Platform Overview
ATS Screener simulates scoring from 6 of the most widely deployed enterprise Applicant Tracking Systems. Each platform has fundamentally different approaches to parsing, filtering, and ranking candidates.
Platform Comparison
Section titled “Platform Comparison”| Platform | Vendor | Market Position | Parser Strictness | Keyword Strategy |
|---|---|---|---|---|
| Workday | Workday Inc. | 37.1% Fortune 500 | High | Exact + HiredScore AI |
| Taleo | Oracle | Legacy Enterprise | Very High | Exact literal match |
| iCIMS | iCIMS | #1 ATS globally | Medium | Semantic (ML-based) |
| Greenhouse | Greenhouse | Tech & Startups | Low | Semantic (LLM-based) |
| Lever | Employ | Modern Recruiting | Low | Stemming-based |
| SuccessFactors | SAP | 13.4% Fortune 500 | High | Taxonomy normalization |
Key Differences
Section titled “Key Differences”Parsing Approach
Section titled “Parsing Approach”Not all ATS platforms parse resumes the same way. Some use their own parsers, while most rely on third-party parsing engines:
- Textkernel powers SuccessFactors and many others (95%+ field accuracy)
- HireAbility ALEX powers iCIMS (grammar-based NLP)
- Greenhouse recently moved to an LLM-based parser (most modern)
- Workday uses its own strict parser that skips headers/footers
Keyword Matching
Section titled “Keyword Matching”This is where platforms diverge the most:
- Taleo uses literal string matching in its base configuration. “Project Manager” will not match “Project Management.” Abbreviations don’t match full forms.
- Workday does exact matching by default, but acquired HiredScore in 2024 for AI-powered semantic matching.
- iCIMS uses its Role Fit AI to do semantic matching. “Led a team of 10” can match “Management experience.”
- Greenhouse uses LLM-based matching, the most forgiving of all platforms.
- Lever uses stemming (matching word roots) but can’t handle abbreviations.
- SuccessFactors normalizes skills to a taxonomy using SAP’s Joule AI.
Auto-Scoring vs Human Review
Section titled “Auto-Scoring vs Human Review”Not all platforms automatically score candidates:
- Taleo has auto-scoring with a visible “Req Rank” percentage and auto-reject via disqualification questions.
- Workday uses configurable knockout questions and optional AI screening (HiredScore).
- iCIMS provides Role Fit AI scores as advisory information for recruiters.
- SuccessFactors does stack ranking with Joule AI.
- Greenhouse does NOT auto-score. It’s designed around structured human review with scorecards.
- Lever does NOT auto-score or rank. Everything is search-dependent.