Mark Bruner — Senior Data Scientist
I build and deploy machine learning and analytics systems that improve business decisions — end to end, from feature engineering to production. You can contact me by clicking the button below or by messaging me on LinkedIn. Hope you enjoy looking through my senior data scientist portfolio!
FEATURED CASE STUDIES
Where Madeira Homes Change Hands Most Often
This map highlights parts of the Maderia school district where home turnover has been consistently high over time. Each hexagon represents an area of the district, and darker areas indicate places identified as turnover hotspots across more years. In other words, the darkest cells mark the neighborhoods where homes changed hands unusually often, year after year, relative to the number of homes in that area.
Return-to-office Distance Impact Dashboard
12K+
Employee Addresses Normalized
Delivered a decision-support dashboard in Oracle FDI that translated employee-to-site distance into clear threshold scenarios for RTO mandates (12,000 employees, 50+ locations).
Best Prospects Scoring Model (B2B Sales Targeting)
+5%
Precision Improvement vs Base Model
Weekly top-125 prospect ranking using NAICS hierarchy, penetration, and proximity features—built for real rep workflows (125 calls/week).
Data Quality Reduction & Governance
>95%
Reduction in data quality defects reaching critical applications
Reduced recurring data issues by more than 95% by implementing validation rules and automated checks—improving trust in downstream reporting and decisions.