Koki Maruyama
AI Engineer Machine Learning Engineer Data Scientist
Chiyoda, Japan
Summary
👤
Senior🎓
Top SchoolKoki Maruyama is an AI and machine learning engineer with 12 years of practical experience, currently pursuing a master’s in Information Science at Tokyo University of Science while working at NEC Corporation and freelancing on ML projects. His research and hands-on work focus on speech processing and natural language processing, and he has applied LLMs and RAG systems to real-world GPS datasets and enterprise data. Past roles include building image-based anomaly detection and production-ready ML models, demonstrating strength across the research-to-deployment spectrum. He blends academic rigor with industry pragmatism—moving from short-term consulting engagements to sustained product work at GEOTRA and NEC. Based in Chiyoda, Tokyo, Koki is comfortable shipping prototypes and scaling models in corporate and freelance contexts. A little-known strength is his consistent cross-domain application of LLMs, from geospatial data pipelines to conversational and speech tasks.
12 years of coding experience
3 years of employment as a software developer
Master's degree, Information of Science, Master's degree, Information of Science at 東京理科大学
Github Skills (6)
pluggable10
sky10
storage9
database8
mysql7
storage-engine6
Programming languages (1)
Github contributions (2)
mroonga/mroonga
Oct 2013 - Jun 2014
A MySQL pluggable storage engine based on Groonga
Contributions:48 commits in 7 months
skymysqlgroongadatabasepluggable
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