Oliver Cox

Overview

I've spent 26 years on fraud detection - first at Wealthsimple, now at Crest Analytics. Built the trust & safety models now used in 4 product decisions a quarter. Replaced 84 hand-built dashboards with one metrics layer people trust. Most at home with rules engines and Python.

Answers in batches on Fridays

Experience

1. Chief Data Officer

   Dec 2024 - Present
   Crest Analytics · 1 yr 10 mo · Full-time · Vancouver, BC
   • Wrote the metric definitions the leadership team reviews every week.
   • Cut false positives on payment blocks by 37%.
   • Caught $9 million of fraud in the first year of the new models.
2. Data Analyst

   Jun 2023 - Nov 2024
   Air Canada · 1 yr 5 mo · Full-time · Vancouver, BC
   • Wrote the metric definitions the leadership team reviews every week.
3. Data Scientist

   Jan 2020 - Jun 2023
   Cohere · 3 yr 5 mo · Full-time · Vancouver, BC
   • Cut false positives on payment blocks by 35%.
   • Wrote the metric definitions the leadership team reviews every week.
4. Data Scientist

   Dec 2016 - Jan 2020
   Deloitte · 3 yr 1 mo · Full-time · Vancouver, BC
   • Replaced 22 hand-built dashboards with one metrics layer people trust.
5. Staff Data Scientist

   Nov 2012 - Aug 2016
   Wealthsimple · 3 yr 9 mo · Full-time · Vancouver, BC
   • Wrote the metric definitions the leadership team reviews every week.

Projects

No references yet.

Education

1. Western University

   HBA, Mathematics
   1995 - 1999