Software Engineer | AI & Web Development | Japanese Fluent
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I am a Japanese-speaking software engineer with several years of practical experience in web application development, particularly with React, Next.js, and TypeScript.
My experience covers frontend and backend development, API integration, cloud environments, databases, debugging, testing, and technical documentation. I have worked through the entire development lifecycle, from requirements and system/UI design to implementation, testing, release, and improvement.
I have strong experience working on AI-related products. One of my main projects was a 0-to-1 AI recruiting support SaaS, where I was primarily responsible for frontend development and was involved from requirements and UI/UX design through implementation, API integration, testing, and launch. I have also worked on an AI-based document compliance system combining OCR and LLM technologies.
For AI evaluation and training, I can approach technical tasks from both an engineering and Japanese-language perspective. I am comfortable reviewing code, checking whether technical explanations and reasoning are logically correct, identifying bugs and edge cases, reproducing issues, and documenting findings clearly and systematically.
I am fluent in Japanese and experienced in technical communication and documentation. I can distinguish between technically correct but unnatural Japanese and natural, precise technical communication, which I believe is particularly valuable for evaluating AI-generated responses in Japanese.
I am interested in helping improve AI models by providing careful technical evaluation, clear explanations, reproducible feedback, and high-quality Japanese language judgment.
Software Engineer / Web Application Developer
Web Application & Full-Stack Development
Developed web applications and business systems using React, Next.js, TypeScript, JavaScript, Vue.js, Node.js, Python, Go, and PHP.
Worked across the full development lifecycle, including requirements definition, UI/UX design, architecture consideration, implementation, API integration, testing, deployment, and maintenance.
Developed RESTful APIs and integrated frontend applications with backend services and external APIs.
Experienced in debugging, troubleshooting, performance improvement, and identifying reproducible software issues.
Worked with AWS services including Lambda, ECS, EC2, S3, Amplify, Cognito, RDS, and SQS.
Worked with MySQL, PostgreSQL, and MongoDB, as well as Docker and CI/CD environments.
AI / Generative AI Development
Developed a 0-to-1 AI recruiting support SaaS, taking a leading role in frontend development from requirements and UI/UX design through implementation, testing, and launch.
Integrated generative AI capabilities for recruiting support, including AI-generated scout messages and API-based data processing.
Developed an AI-based document compliance system combining OCR and LLM technologies to analyze pharmaceutical and quasi-drug documentation.
Worked with Next.js, TypeScript, Tailwind CSS, FastAPI, AWS EC2, Docker, OCR technologies, and LLM-related APIs and services.
Evaluated technical approaches, investigated AI-related technologies, and documented findings and issues during development.
Experienced in reviewing technical behavior, identifying logical inconsistencies, debugging issues, and documenting reproducible problems.
Created and maintained test plans, test cases, issue reports, technical documentation, and development-related materials.
Able to explain technical concepts and software issues clearly in Japanese.
Experienced in evaluating whether technical explanations, system behavior, and implementation approaches are logically consistent and practically appropriate.
Fluent in Japanese and experienced in Japanese technical communication within software development teams.
Comfortable communicating technical requirements, implementation details, bugs, test results, and system behavior in Japanese.
Able to evaluate both technical correctness and the naturalness and precision of Japanese technical writing.
Hanoi University of Science and Technology (HUST)
Bachelor’s Degree in Information and Communication Technology
Hanoi, Vietnam
Studied information and communication technology with a focus on software development, computer systems, programming, databases, and related technologies.
