Mark Morris

Overview

Director of Data Science at Chewy, focused on fraud detection. Built the trust & safety models now used in 11 product decisions a quarter. Taught SQL to 144 non-analysts. Learning to draw.

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Experience

1. Director of Data Science

   Dec 2023 - Present
   Chewy · 2 yr 10 mo · Full-time · Los Angeles, CA
   • Taught SQL to 192 non-analysts.
   • Replaced 54 hand-built dashboards with one metrics layer people trust.
   • Caught $2 million of fraud in the first year of the new models.
2. Senior Data Scientist

   Oct 2022 - Dec 2023
   Adobe · 1 yr 2 mo · Full-time · Los Angeles, CA
   • Taught SQL to 65 non-analysts.
   • Cut false positives on payment blocks by 43%.
3. Senior Data Scientist

   Aug 2019 - Oct 2022
   Atlassian · 3 yr 2 mo · Full-time · Los Angeles, CA
   • Caught $3 million of fraud in the first year of the new models.
4. Staff Data Scientist

   May 2018 - Aug 2019
   Dropbox · 1 yr 3 mo · Full-time · Los Angeles, CA
   • Replaced 86 hand-built dashboards with one metrics layer people trust.
   • Caught $4 million of fraud in the first year of the new models.
5. Staff Data Scientist

   Jul 2014 - May 2018
   Etsy · 3 yr 10 mo · Full-time · Los Angeles, CA
   • Wrote the metric definitions the leadership team reviews every week.
   • Built the trust & safety models now used in 10 product decisions a quarter.

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Education

1. Princeton University

   AB, Economics
   2001 - 2005