Available to hire
Machine Learning Engineer focused on end-to-end AI system design, scalable deployment, and performance/cost optimization. I connect speech-to-speech pipelines with LLM reasoning, build adapter-based evaluation frameworks, and turn experiments into reproducible infrastructure.
I also build and optimize AI for real-time applications—super-resolution/frame generation, autonomous driving planners, and game/client-server systems—while leveraging strong engineering practices in C++/Python, cloud deployments, and data/model compression.
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Language
Chinese
Fluent
Japanese
Fluent
English
Advanced
Work Experience
Machine Learning Engineer at Fixstars Corporation
September 1, 2024 - PresentBuilt an end-to-end pipeline connecting a front-end speech-to-speech model to a backend LLM for asynchronous deep reasoning (modeled after GPT-Live-style architecture). Extended ServiceNow EVA with custom STT/TTS/LLM adapters to enable reproducible evaluation of Japanese phone-call agents under identical dialogue scenarios. Modeled per-call costs across STT/TTS/LLM combinations and selected a configuration that reduced projected cost by 12% vs baseline. Offloaded GPU-intensive STT/TTS/LLM inference from a monolithic server to AI Station by redesigning cloud–AI Station interfaces. Codified cloud and AI Station environments as Infrastructure-as-Code using Ansible and Docker for reproducible large-scale deployment.
Also: ported PyTorch models to proprietary GPU by reimplementing neural network layers as compute shaders; refactored PLUTO data processing from Python to C++ to reduce processing time by 85%, reconstructed datasets to reduce training time by 50% and loss by 15%, and perform
Programmer at KOEI TECMO GAMES CO., LTD.
April 1, 2020 - August 31, 2024Collaborated with product managers, artists, and external teams to design, code, debug, test, and develop new game features (equipment, events, characters, etc.). Fixed defects including logic errors, memory leaks, crashes, and fragmentation, eliminating 95% of reported errors.
Nobunaga’s Ambition: Hadou (mobile game): designed schemas and client/server protocols; reduced Redis access by 95% and Redis keys by 90% for map unit launch data by moving logic into a zone manager class; monitored DAU/ARPPU and user activity metrics; set up and managed GitLab CI/CD machines for data conversion and compilation.
Wild Hearts (co-developed with EA): implemented ECS-architecture programming; reduced average load time by 30% and reduced memory usage of UI text by 10% via object pooling; mentored new graduate programmers enabling code contributions within two months.
Machine Learning Intern at ALBERT Inc.
September 1, 2018 - December 31, 2018Developed a ceramic-quality inspector to detect black dots on ceramic boards using deep learning.
Education
Master of Arts and Sciences (Applied Computer Science) at The University of Tokyo
April 1, 2018 - March 31, 2020Qualifications
TOEIC 790
January 11, 2030 - August 27, 2026JLPT N1
January 11, 2030 - August 27, 2026Industry Experience
Software & Internet, Gaming, Computers & Electronics, Education, Telecommunications
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
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