[Mercari] Lead Mercari's credit scoring model development supporting 24 million users | Senior Machine Learning Engineer, Credit MLEnglish summary from Japanese

株式会社メルカリ

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Salary

10M JPY - 18M JPY

Role summaryEnglish summary from Japanese

English summary for screening — check the original posting before applying.

Mercari is seeking a Senior Machine Learning Engineer to lead the development and operation of credit scoring models for their platform, supporting 24 million users. You will contribute to business growth by developing innovative credit scoring solutions and mentoring team members.

Must-haves

3+ years of experience building ML models using libraries like scikit-learn, LightGBM, PyTorch
1+ year of experience in model operations/MLOps (monitoring, alerting, update flows, incident response)
2+ years of experience with databases, SQL, and analysis/feature design
2+ years of experience leading teams/projects (technical selection, design reviews, mentoring)
Strong communication skills for collaborating with team members and stakeholders

Nice-to-haves

Experience in financial institutions or Fintech companies
Experience with data analysis and system development in cloud environments (AWS/GCP)
Experience developing/operating deep learning models (LLMs, foundation models)
Experience with Off-Policy Evaluation/Learning

About the Company

株式会社メルカリ

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Posted8/17/2026

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[Mercari] Lead Mercari's credit scoring model development supporting 24 million users | Senior Machine Learning Engineer, Credit MLEnglish summary from Japanese

Role summaryEnglish summary from Japanese

Must-haves

Nice-to-haves

About the Company

[Mercari] Lead Mercari's credit scoring model development supporting 24 million users | Senior Machine Learning Engineer, Credit MLEnglish summary from Japanese

Role summaryEnglish summary from Japanese

Must-haves

Nice-to-haves

About the Company

Tech stack

Work style

Other notes