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Rakuten

Posted 12 Oct 2026

Lead Data Engineer

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Employment
Full time
Team
Software Engineering
Posted
12 Oct 2026

About the role

Responsibilities:

  • Work cross-functionally with product managers, data scientists, and product engineers, and communicate results to peers and leaders.
  • Develop scalable algorithms and methods to provide real-time recommendations.
  • Explore new technology shifts to determine how they might connect with the customer benefits we wish to deliver.
  • Work with engineering teams to implement new models while considering functionality for recommendation output.
  • Collaborate with data scientists to prototype new algorithms and design experiments for evaluation to enhance our marketing efficiency.
  • Contribute to a culture of continuous improvement and data-driven results.
  • Work with data scientists to create and refine features from the underlying data and build pipelines to train and deploy models.
  • Run regular A/B tests, gather data, perform statistical analysis, and draw conclusions on the impact of your models.
  • Discover data sources and ingest and cleanse them in a meaningful way for data processing.
  • Participate in design discussions about new features and approaches to implementing new services.
  • Take end-to-end ownership of machine learning systems, from data pipelines and training to real-time prediction engines.
  • Partner with data scientists to understand, implement, refine, and design machine learning and other algorithms.


Requirements:

  • Bachelor's degree or higher (completed and verified before start) from an accredited university.
  • Preferably working experience in the FinTech or credit card industry.
  • Knowledgeable with data science tools and frameworks (i. e., Python, Scikit, NLTK, Numpy, Pandas, TensorFlow, Keras, R, and Spark).
  • Software engineering fundamentals: version control systems (i. e., Git, Github) and workflows, and ability to write production-ready code.
  • Should have a clear understanding of generative AI and various LLM models.
  • Databricks Delta Lake architecture and MLflow are added advantages.
  • Good knowledge of Azure cloud infrastructure.
  • Strong knowledge of machine learning techniques (i. e., classification, regression, and clustering).
  • BS, MS, or PhD degree in computer science or a related field, or equivalent practical experience.
  • Understand machine learning principles (training, validation, etc. ).
  • Expertise in visualizing and manipulating big datasets.
  • Knowledge of data query and data processing tools (i. e., SQL).

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