Arnold Koroa
Senior Machine Learning Engineer at Mercari, Inc.
Chiyoda, Japan
Summary
👤
Senior🎓
Top SchoolArnold Yanakawa is a Senior Machine Learning Engineer with 13 years of experience building production ML and backend systems, currently applying ML to physical systems like drones and robots from Chiyoda, Japan. He combines deep practical skills in Python, Go, Kubernetes and Google Cloud with robotics experience in ROS, LiDAR SLAM, RTK-GNSS and Kalman-filter sensor fusion, bridging perception, control and cloud-native serving. At Mercari he has led design and deployment of ML serving, data/metric platforms (BigQuery, DBT, LookML) and CI/CD infrastructure, while earlier roles at Rakuten and Sensyn Robotics honed large-scale data systems and embedded robotics automation. He contributes pragmatic backend improvements in open-source education tooling (TEAMMATES) and consistently focuses on operationalizing models via Terraform, GitHub Actions and MLOps pipelines. His background—Master’s from NUS and an exchange at The University of Tokyo—reflects a blend of rigorous academics and hands-on system engineering across both cloud and edge.
13 years of coding experience
8 years of employment as a software developer
University of TokyoMaster of Computing (M.Comp.), Computer Science, Master of Computing (M.Comp.), Computer Science at National University of Singapore
English, Indonesian, Japanese
Github Skills (6)
javas10
jspx10
java10
jsp10
javascript8
front-end-development7
Programming languages (4)
Github contributions (5)
TEAMMATES/teammates
Dec 2013 - Dec 2014
This is the project website for the TEAMMATES feedback management tool for education
Role in this project:
Back-end Developer
Back-end DeveloperContributions:183 commits, 5 comments in 1 year
Contributions summary:Arnold primarily worked on implementing features for the student feedback sessions in the TEAMMATES tool. Their commits focused on modifying JSP files for student feedback submission, including the submission and editing of multiple-choice question (MCQ) answers. The code changes also involved improvements to the user interface and adding functionality to the instructors view, focusing on rendering the information in the correct form.
cssjavascriptteammatesfeedback-systemsproject-website
ackoroa/UVa-Solutions
Jan 2013 - Apr 2013
Contributions:210 commits in 3 months
statisticsproblemsuvafelixsolved
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