Brandon Bertelsen
Director Of Data Science Operations
Toronto, Ontario, Canada
Summary
👤
Senior🎓
Top SchoolBrandon Bertelsen is a senior data science leader based in Toronto with 15 years of experience turning ambiguous, domain-varied problems into production data products. As Director of Data Science Operations at YouGov he leads international teams across fraud and quality modeling, data engineering, workflow orchestration, election forecasting and LLM fine-tuning, while maintaining a prolific internal R package ecosystem of 20+ packages. He combines hands-on debugging and engineering (R/Python, Snowflake/Redshift, Prefect/Airflow, DuckDB) with client-facing technical liaison work for partners like CBS News, Meta and The Economist. Brandon also co-runs development and consulting shops that build full-stack MVPs and research tools, blending product-minded engineering with econometrics and survey research expertise. Known for tackling greenfield “figure it out” projects, he balances strategic team growth with line-by-line code ownership and practical, auditable analytics.
12 years of coding experience
15 years of employment as a software developer
Machine Learning for Analytics MasterTrack™ Certificate, Machine Learning for Analytics MasterTrack™ Certificate at University of ChicagoBachelor of Commerce Economics and Management Science, Bachelor of Commerce Economics and Management Science at Toronto Metropolitan University
English, French, Spanish
Stackoverflow
44,228reputation
5.4mreached
385answers
235questions
annotations
top-5%
dataframe
top-5%
shiny
top-5%
knitr
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excel
top-5%
macos
top-5%
Github Skills (200)
dataflow10
ui-components10
apache-arrow10
knitr10
gmail10
automation10
htmlwidgets10
api10
in-memory10
data-science10
apache10
ui-toolkit10
css10
interchange10
crunch10
Programming languages (19)
Github contributions (5)
Crunch-io/crunchtabs
Mar 2020 - Oct 2022
Report generation for Crunch and generic datasets in R
Contributions:17 releases, 3 reviews, 458 commits in 2 years 7 months
codebookcrunchr-packagedata-qualitytopline
yougov-datascience/arkdb
Sep 2021 - Nov 2022
Archive and unarchive databases as flat text files
Contributions:13 PRs, 44 pushes, 9 branches in 1 year 2 months
sqlarchivedatabasesdatabasetext-files
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