
New to Contra
Masataka is ready for their next project!

Tokyo-based AI automation engineer and native Japanese evaluator. I build reliable TypeScript products, API integrations, monitored workflows, and human-in-the-loop approval systems. I also provide Japanese localization QA, AI-output evaluation, deployment support, and clear technical documentation for remote teams.
$25 - $50/hr
Shinjuku City, Japan
(GMT+9) Japan Standard Time (JST), ±4 hours
Fluent in Japanese