Takashi Nishibayashi
Machine Learning Engineer at VOYAGE GROUP Inc.
Chiyoda, Japan
Summary
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SeniorTakashi Nishibayashi is a machine learning engineer with over 15 years of hands-on software experience and a 22-year engineering background building high-traffic commercial and enterprise systems. He has led data science teams and shipped production ML and optimization features for ad platforms—designing real-time decision systems, bidding strategies, and a BigQuery-based data warehouse used company-wide. Since 2022 he’s focused on healthcare ML, developing symptom-checker prediction models, medical knowledge engineering, physician-facing tools, and LLM-based medical text processing with rigorous monitoring for safe releases. Comfortable across Python, Scala, AWS/GCP and frontend-to-backend stacks, he blends applied data science with practical system design and operational discipline. Notably, he has contributed backend improvements to a popular BigQuery Python client, adding features and tests that reflect his focus on robust, production-ready tooling.
15 years of coding experience
6 years of employment as a software developer
Japanese, English
Github Skills (8)
unit-testing10
google-bigquery10
bigquery10
unit-test10
python10
testing10
apidoc9
api9
Programming languages (3)
Github contributions (5)
tylertreat/BigQuery-Python
Jul 2015 - Apr 2016
Simple Python client for interacting with Google BigQuery.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:9 commits, 4 PRs, 15 comments in 9 months
Contributions summary:Takashi primarily focused on enhancing the functionality of the Python client for Google BigQuery. Their contributions included adding features like table expiration time and stream insert options. They also implemented tests to validate the new functionalities, fixed code style issues, and improved the overall codebase through the use of a package logger.
google-bigquerybigquerypythonpython-client
ISAC-Tokyo/HyperLocation
Apr 2015 - Jun 2015
Contributions:41 commits, 48 pushes, 3 branches in 2 months
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