James Dellinger
James Dellinger
James Dellinger
Make decision trees make use of categorical variables.
Mountain View, CA
Dec 2019–Present
Building a random forests package optimized for categorical splits. Writing a textbook on decision tree algorithms.
Mountain View, CA
Jul 2022–Present
Executing a proprietary short-term strategy based on George Douglass Taylor’s principles. Published a book on his approach.
Mountain View, CA
Jun 2017–Dec 2019
Mastered tabular data, computer vision, and language models. Solo bronze medals in two Kaggle competitions.
Mountain View, CA
May 2014–Dec 2016
TV guide, remote control app. 1M+ daily active users.
1yr 4mo
Built TV/streaming voice control interface with crack engineering team. Founders demoed to national retailer CEOs.
1yr 4mo
6mo
2x’d setup funnel completion rate via UX user testing, A/B tests, and reducing backend latency.
6mo
6mo
Pitched app and monetization strategy to prospective investors. Prototyped new features and ad products.
6mo
4mo
Helped CEO with strategic projects in business development, marketing, and general admin. Made slide decks for founders’ presentations.
4mo
Mountain View, CA
Dec 2012–Dec 2013
Sanity checked ad placement algorithms.
Beijing, China
Sep 2008–Aug 2011
Taught English, high school math, and SAT prep.
Seoul, Korea
Apr–Sep 2007
Ran a coffee shop near Yonsei University.
B.A. Economics
May 2004
Advanced courses in Econometrics, Probability, Statistics, Japanese.
Languages: Fluent Japanese (JLPT Level 1, Dec 2006). Conversational Korean, Chinese.
Hobby: Repairing vintage electronics.