Correlation One

Recruit efficiently and hire intelligently with C1 assessments.

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Developer Correlation One
Partner implementation fee
This is a fee paid to the partner to implement the integration.
Company sizes supported 1-100, 101-1,000, 1,001-10,000, 10,000+
Regions supported North America, EMEA (Europe, Middle East, Africa), APAC (Asia Pacific), South America
Languages supported
These languages are supported by the integration partner, but may not necessarily be supported by Greenhouse.

Elevate your data talent

The C1 Assessments Platform is currently used by data talent leaders like Citadel, Wayfair, Experian, CanadaTire, Point72, Korn Ferry, GSA Capital, and more.

Correlation One helps you define your unique data science & analytics roles, and the most important skills for each role. We then build custom assessments for each role, so that you can make hiring decisions with confidence.

Our platform covers over 30 advanced data skills, from hard skills like Python, Statistical Modeling, and Machine Learning, to softer skills like Data Visualization and Data Inference.

The C1 Assessments platform includes over 1500 individual questions, all developed by leading Ph.D. and industry experts.


Inline score details

View each skill category in addition to overall score within the interview kit after a candidate has completed their assessment.

Inline score details

Access to enhanced score reports

Our detail score reports explain how each candidate performs in the skill categories selected for each unique assessment.

Access to enhanced score reports

See how candidates rank within the group

Access to distribution reports to see how each candidate's assessment performance compares with others who have taken the same assessment.

See how candidates rank within the group