Harlan Harris

New York, New York, United States

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Summary

👤

Senior

🎓

Top School

Harlan Harris is an independent consultant and seasoned data and AI leader with 15+ years of experience helping EdTech, e-commerce and marketplace businesses translate search, ML and data into measurable revenue and product improvements. He blends hands-on engineering — from building search microservices and LLM-based chatbots to contributing core data structures in open-source projects like JuliaData/DataFrames.jl — with product and organisational leadership as a former VP of Data and AI and Director of Analytics Engineering. Harlan is known for turning underperforming governance or prototype efforts into production-ready teams and systems that improve trust, metrics and stakeholder alignment. Practical and commercially focused, he excels at closing talent gaps, strengthening analytics foundations, and moving AI from prototype to repeatable production. Based in New York, he combines a PhD in Computer Science with a track record of delivering measurable outcomes such as doubling student engagement and increasing search-driven revenue.

15 years of coding experience

18 years of employment as a software developer

BS, Computer Science, Linguistics, BS, Computer Science, Linguistics at University of Wisconsin-Madison

PhD, Computer Science, Cognitive Science, PhD, Computer Science, Cognitive Science at University of Illinois Urbana-Champaign

Stackoverflow

Stats

19,163reputation

1.7mreached

71answers

25questions

Badges

assert

top-5%

top-1%

vector

top-1%

language-design

top-5%

Github Skills (24)

r10

dataframes10

data-structure10

dataframe10

vector10

data-structures10

julia10

data-analysis10

csv-parse9

data-pipelines9

ggplot9

language-design9

assert9

data-pipeline9

csv-parsing9

Programming languages (10)

JuliaTypeScriptRC++CSSJavaScriptHTMLJupyter Notebook

Github contributions (5)

JuliaData/DataFrames.jl

Jul 2012 - Apr 2013

In-memory tabular data in Julia

Role in this project:

Back-end Developer & Data Scientist

Contributions:32 commits, 1 comment in 9 months

Contributions summary:Harlan primarily contributed to the `dataframes.jl` repository by implementing and refining core data structures and functionalities within the Julia programming language. Their work involved bug fixes related to module interactions, and the development of demo files for the `DataFrame` type. They also introduced and modified core features related to data structures like `DataVec`, `PooledDataVec` and associated functions, including functions dealing with missing data and data aggregation. They also fixed issues in the formula expansion engine and the CSV parsing and contributed to a data assignment function for DataFrames.

memorydataframesdatatabular-datadata-frame

HarlanH/code-for-dc-edu

Jun 2013 - Sep 2015

Contributions:90 commits, 1 push, 2 comments in 2 years 3 months

reactcode-for-dceducation-project

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