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R&D Scientist
Rakuten, Inc.
00010880 Requisition #
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  • Bachelor’s degree in Computer Science, Social Sciences, Physical Sciences, Statistics or related areas.
  • 3+ years of relevant work experience in data analysis or related areas.
  • Solid understanding of foundational statistics concepts and ML algorithms: linear/logistic regression, random forest, boosting, GBM, NNs, etc.
  • Experience building data science solutions for real business problems. (e.g. recommendation building, customer journey definition, shopping feature prediction, etc).
  • Skilled in self-directed exploratory data analysis.
  • Passion for learning (new problem domains, algorithms, tools etc) and for analyzing data.
  • Fluency in using R or Python (pandas, scikit-learn or equivalent tools) for data analysis. Experience with working on large data sets, especially with Hadoop and Spark, or cloud platforms such as AWS and Azure.
  • Ability to extract, combine and analyze complex datasets using SQL.
  • Ability to work collaboratively in a team environment and work effectively with people at all levels in an organization.
  • Ability to distill complex data and findings into clear, presentable reports.
  • Ability to effectively communicate with non-technical as well as technical audiences.




  • Master’s degree in Computer Science, Social Sciences, Physical Sciences, Statistics or related areas.
  • 3+ years of industry experience especially in digital marketing, e-commerce or customer analytics-related fields.
  • Experience with GPU usage.
  • Experience integrating and analyzing data from multiple sources (e.g. first party + third party)
  • Experience with automation and/or working with Data Engineers, Software Engineers, etc. in integrating analysis results and models into production systems.
  • Experience in client relationship management such as consulting or sales.
  • Communication skill in both English and Japanese
  • Experience with data visualization tools, e.g. tableau, D3.js, ggplot, Bokeh, Matplotlib, etc.




  • Your application will be reviewed by the different companies. If your application is successful, you will receive an interview invitation with a full job description for each position you have been selected for. 
  • You can decide whether you would like to move forward for a given position or not. 
  • You can have several interview processes for different positions in parallel (this will not affect the final result).