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This posting is managed by: Next Move K.K. / ネクストムーブ株式会社
Company Name Company is not publicly visible
Job Type
Next Move K.K. / ネクストムーブ株式会社
IT (Other) - Data Analyst/Data Scientist
IT (Other) - Machine Learning/AI Engineer
IT (Other) - Other
Industry IT - Other
Location Asia Japan Tokyo Shibuya

Job Description A fast-growing AI product company in Tokyo is hiring a Data Scientist with a strong foundation in NLP and model experimentation to help shape the next wave of applied GenAI features.
Company Info What you’ll be doing

◆ Analyse and evaluate LLM-based model performance in practical, text-heavy use cases

◆ Build and maintain pipelines for annotation, testing, and model comparison

◆ Collaborate with engineers, designers, and domain experts to translate noisy model output into measurable improvements

Why you should apply

◆ You’ll work at the intersection of machine learning and real-world product constraints

◆ The problems are full of edge cases, ambiguous language, and require models that are robust, interpretable, and useful

◆ You’ll help define what "good" looks like in systems used by thousands of real users
Working Hours Full flex system without core hours
Job
Requirements
Skills, Knowledge, and Experience in one or more of the following:
◆ Experience in applied data science, ideally including NLP model evaluation or experimentation
◆ Strong skills in Python, SQL, and ML experimentation workflows
◆ Comfortable presenting findings to non-technical stakeholders
◆ Business-level Japanese (JLPT N2 or higher) and fluent English

Experience in one or more of the following areas is desirable:
◆ Experience working with legal, financial, or regulatory documents
◆ Familiarity with LLM evaluation frameworks, annotation strategies, or prompt testing workflows

Please apply by clicking the apply button.

Must be based in Japan (no overseas-remote at this time)
English Level Fluent (TOEIC 865-)
Japanese Level Business Level(JLPT Level 2 or N2)
Chinese Level Minimum Communication Level
Salary Depends on experience   
Job Contract
Period
Hiring Full-Time Position
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