Ai N.

Native Japanese bilingual specialist with a technical background, specializing in QA Testing, AI Data Annotation/Evaluation, Audio Transcription, and English-to-Japanese Localization. Having earned over $1,000+ on Upwork across data annotation, model evaluation, and testing contracts, I provide high-accuracy, reliable deliverables with strict adherence to client guidelines and deadlines. My background in software engineering allows me to quickly comprehend technical specifications, spot edge cases, and execute test cases with meticulous attention to detail. Services I Provide: • AI Data Annotation & LLM Evaluation: Text categorization, prompt-response evaluation, hallucination detection, RLHF ranking, and voice bot naturalness evaluation. • QA & Usability Testing: Web and mobile app manual testing, test case execution, cross-platform validation, and bug reporting with clear reproduction steps. • Japanese Translation & Localization: Accurate, context-aware EN-to-JP translations, culturally adapted for web/mobile apps, educational materials, and SaaS products. • Transcription & Audio Verification: Precise transcription of Japanese audio, timestamping, speaker diarization, and speech-to-text accuracy checks. Why Work With Me: • Native Japanese & Fluent English: Clear, proactive communication across time zones without language barriers. • Detail-Oriented & Methodical: I distinguish genuine errors from stylistic variations and follow complex edge-case instructions without guessing. • Technical Literacy: Experienced with Git, spreadsheets, issue trackers (Jira/Trello), and developer tools, ensuring zero onboarding friction. Whether you need a dedicated reviewer for a pilot project or a reliable specialist for ongoing data labeling, feel free to reach out. Let's discuss your project goals!