Experience

7+ years building production systems — from backend engineering to AI/ML.

Experience

2025 — PresentTokyo, Japan

Independent AI/ML Engineer

Independent

  • Designing LLM-based applications including RAG pipelines and agent-style orchestration systems for structured task execution
  • Exploring parameter-efficient fine-tuning approaches and structured evaluation strategies to improve reliability and cost efficiency
  • Building intelligent automation workflows integrating LLMs with production APIs and real-time data sources
PythonPyTorchHugging FaceLangChainVector DBsMLflowDocker
2022 — 2024Tokyo, Japan

Senior AI/ML Engineer

BrainPad Inc.

  • Delivered predictive modeling and analytics solutions for enterprise clients in retail and manufacturing industries
  • Led end-to-end ML development including feature engineering, model selection, validation, and deployment coordination
  • Standardized experiment tracking workflows using MLflow and supported production evaluation and retraining processes
  • Provided guidance to junior engineers and participated in technical discussions with client stakeholders
LightGBMXGBoostTensorFlowMLflowAirflowAWS SageMakerDockerSQL
2019 — 2021Tokyo, Japan

AI/ML Engineer

ALBERT Inc.

  • Built supervised learning models for demand forecasting and customer behavior prediction in retail and telecom sectors
  • Developed Japanese-language NLP classification systems using transformer-based architectures
  • Designed preprocessing workflows, engineered time-series features, and implemented cross-validation strategies
  • Supported deployment by implementing lightweight inference APIs and integrating ML services into enterprise systems
PythonScikit-learnPyTorchHugging FacePandasSparkFastAPI
2017 — 2019Tokyo, Japan

Software Engineer

TIS Inc.

  • Developed and maintained enterprise financial systems as a backend software engineer
  • Implemented server-side modules using Java and Spring Framework, developed REST APIs and transaction processing systems
  • Contributed to performance improvements through SQL optimization and restructuring of batch-processing workflows
JavaSpring FrameworkPostgreSQLOracle DBAWS EC2/S3GitLinux

Education

2015 — 2017

The University of Tokyo

Master of Science (M.S.), Information Science and Technology

GPA: 3.7 / 4.0

  • Specialized in machine learning, statistical modeling, and computational data analysis
  • Research focus on supervised learning under limited and imbalanced data conditions
  • Comparative evaluation of classical ML and neural network models
2011 — 2015

The University of Tokyo

Bachelor of Science (B.S.), Computer Science

GPA: 3.6 / 4.0

  • Built strong foundations in algorithms, systems programming, and software engineering
  • Capstone project: predictive analytics system using SVM, Random Forest, and Logistic Regression
  • Participated in university coding competitions and team-based software projects