Data Freelancer Profile
Dave Langer
LinkedIn Profile https://www.linkedin.com/in/davelanger/
Secondary Specialties Data Analysis & Insights, Data Cleaning & Preparation, Data Science & Machine Learning
Core Languages Python, R, SQL
Data Engineering Skills SQL Server
Data Analytics Skills Excel
Data Science & ML Skills Jupyter Notebooks, Pandas, scikit-learn
Industry Experience E-commerce & Retail, Financial Services & Banking, Technology & Software
Education
Master’s of Computer Science – University of Washington
Bachelor’s of Arts in Economics – University of Washington
Awards
Microsoft MVP – Python in Excel
LinkedIn Top Voice
Publications
My book “Python in Excel Step by Step” will be published by Wiley in January 2026.
