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AI/ML Practitioner - DeNA | Reinforcement Learning | Kaggle Master
I am passionate about leveraging data science, machine learning, deep learning, and reinforcement learning to engage user experiences. As the Head of AI/ML, I led the integration of advanced AI applications across diverse services, including mobile gaming, sports, live streaming, medical, and more. My leadership also involves shaping our overall AI strategy and building the high-performing engineering organization required to achieve our vision. I utilize a wide range of AI technologies, from established methods to cutting-edge generative AI like LLMs. Currently, my focus is on building AI-native products and exploring the potential from AI agents to state-of-the-art AI technologies across various business domains. My background includes extensive experience in designing and managing data-driven AI projects, underpinned by achievements such as earning the Kaggle Master title. ◆ Books (Japanese) - Hands-On Mathematical Optimization: Case Studies for Modeling with Python (Amazon 4.4⭐️) - Algorithms for Reinforcement Learning (Co-author) ◆ Presentations of my work (English) - Google Cloud Next '19 in SF - Deck: https://speakerdeck.com/ikki407/building-game-ai-for-better-user-experiences - Game Developers Conference 2019 - Deck: https://www.slideshare.net/juneokumura/applying-ai-in-games-gdc2019 ◆ Data science competitions - Kaggle Hungry Geese: Winner (1st Place / 875 Teams) - Kaggle Google Research Football with Manchester City F.C.: 5th Place / 1138 Teams - Kaggle Santander Customer Satisfaction: 3rd Place / 5123 Teams (Prize Winner) - KDD Cup 2015: 10th Place / 821 Teams (Prize Winner, Presented at KDD Workshop) - DATA SCIENCE FESTIVAL 2014: 5th Place / 274 Teams (Prize Winner)
慶應義塾大学大学院
Master of Engineering - MEng, Integrated Design Engineering
January 1, 2015 – January 1, 2017
Keio University
Bachelor of Science - BS, System Design Engineering
January 1, 2011 – January 1, 2015
DeNA
Senior Staff AI Engineer
April 1, 2026 – Present
DeNA
Head of AI/ML
October 1, 2022 – March 1, 2026
DeNA
AI Engineering Manager
April 1, 2022 – September 1, 2022
DeNA
Data Scientist
April 1, 2017 – March 1, 2022
Retty, Inc.
Internship
August 1, 2016 – January 1, 2017
Yahoo! JAPAN
Internship
February 1, 2016 – February 1, 2016
Recruit Holdings Co., Ltd.
Internship
September 1, 2015 – September 1, 2015
Cultural Fit Analysis
The candidate has a strong background in AI/ML and data science, with experience in various industries and applications. While the target role is 'Data Analyst', the candidate's experience is heavily skewed towards senior AI/ML engineering and leadership, which is a significant mismatch. The breadth of experience in different AI/ML domains (reinforcement learning, recommendation, generative AI) indicates adaptability. However, the lack of explicit data analysis projects or roles focused purely on analytical insights (rather than model building) suggests a potential misalignment with a traditional Data Analyst role. The candidate's career trajectory points towards a more advanced, strategic, and technical role than a typical Data Analyst position.
Soft Skills & Operational Fit
The candidate's career progression from Data Scientist to leadership roles like Head of AI/ML and Senior Staff AI Engineer suggests strong leadership, strategic thinking, and project management skills. The descriptions imply an ability to operate across technical development, research, and business creation, indicating a blend of technical depth and operational acumen. However, without specific psychometric test results, a detailed assessment of work attitude, stress handling, and team collaboration is not possible.