Guilherme Freitas

About Guilherme Freitas

I have worked as a team lead, machine learning engineer, data scientist, consultant and trainer since 2013 in the technology sector, mostly in the online advertising and real estate lead generation industries. Strong background in mathematics, economics, Python, and coaching junior data scientists and analysts. PhD Economist trained in the design of markets, auctions, cost-sharing schemes and other mechanisms.Specialties: data science, bespoke statistical/econometric/mathematical modeling. Interested in computational methods, optimization, Bayesian stats and causal analysis.

Experience

1. Senior Staff Data Scientist

   Realtor.com

   Jan 2020 — Present

   Led the development of a churn model, significantly influencing product prioritization and generating millions in revenue. • Spearheaded a rapid test of a lead-vetting chatbot, creating a CLI application for domain experts to validate results. • Developed a Customer Lifetime Value Model using custom implementations, enhancing project reproducibility and efficiency.

Education

• IMPA

  MSc, Mathematical Economics

  2005 — 2007

• Caltech

  PhD, Economics

  2007 — 2013

• University of Brasília

  BSc, Economics

  2000 — 2004

Skills

• Big Data Analytics
• Statistics
• R
• Game Theory
• Data Analysis
• Matlab
• Ampl
• Fortran
• Research
• Analytics
• Python
• Mathematical Analysis
• Mathematica
• Mathematical Programming
• Economics
• Hadoop
• C
• Microeconomics
• Optimization
• Mathematical Modeling
• Teaching
• Economic Modeling
• Economic Research
• Mechanism Design