Key Responsibilities:

• Create or edit linguistically rich Japanese content, including grammar guides, syntactic analyses, usage explanations, and example sentences for LLM..
• Translate and localize English content into natural, contextually appropriate Japanese while maintaining accuracy and tone.
• Identify and resolve issues related to ambiguity, bias, or grammaticality in Japanese language data.
• Perform quality assurance (QA) on model outputs for fluency, cultural nuance, factual accuracy, and linguistic appropriateness in Japanese.
• Annotate Japanese linguistic datasets with syntactic, semantic, or pragmatic labels.
• Conduct linguistic research on Japanese language usage and summarize findings to support internal teams.
• Apply linguistic expertise to evaluate model behavior, identify error patterns, and improve Japanese language performance across NLP systems.

Qualifications:

• Deep understanding of Japanese linguistic theory, grammar, and language structure.
• Native or near-native fluency in Japanese and strong command of English.
• Experience with computational linguistics, corpus analysis, or language data annotation (especially for Japanese) is a plus.
• Familiarity with LLM training and evaluation workflows preferred.
• Exceptional writing, editing, and communication skills in both Japanese and English.