Hidetaka Kojima
Co-founder, Engineer at Exploratory, Inc
Redwood City, California, United States
Summary
👤
Senior🎓
Top SchoolHidetaka Kojima is a seasoned engineer and co-founder with 15 years of experience building data-focused products, currently designing and shipping Exploratory Desktop for advanced analytics, data wrangling, and visualization. He combines deep front-end expertise in JavaScript (Node.js, React) with R-driven analytics, routinely stitching together databases like Redshift, BigQuery, Presto, and MongoDB into cohesive user experiences. Previously a principal engineer at Oracle, he was a core member of the Oracle BI Mobile App Designer and led key UI and security integrations across BI Publisher and Fusion Applications. A long-time contributor to open-source R tooling, he blends product-minded engineering with hands-on implementation across the full software lifecycle. Based in Redwood City, he pairs enterprise-scale discipline from Oracle with startup agility, often solving tricky integration and UX problems that bridge statistical computing and interactive visualization.
15 years of coding experience
18 years of employment as a software developer
BA Econometrics, BA Econometrics at Keio University
English, Japanese
Github Skills (111)
parser10
exploratory10
data-transformation10
r10
dplyr10
r-package10
grammar10
odbc9
spreadsheet9
googleauthr9
tidy9
tidyverse9
dbi9
data-manipulation9
xls9
Programming languages (5)
Github contributions (5)
exploratory-io/book
Jun 2016 - Jan 2023
Contributions:684 commits, 438 PRs, 524 pushes in 6 years 8 months
exploratory-io/googleAnalyticsR
Nov 2019 - Oct 2022
Use the Google Analytics API from R
Contributions:3 pushes, 1 branch, 1 tag in 2 years 11 months
apianalyticsanalytics-apigoogle-analytics-apirstats
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