Coupang

Senior Staff / Staff Machine Learning Engineer

Coupang
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13 hours ago
Singapore, SingaporeStaff+

Responsibilities

  • Develop GenAI and AI-agent systems for complex eCommerce scenarios.
  • Develop, train, post-train, and deploy large language, vision, and foundational models.
  • Define end-to-end foundation-model processes, experiments, and learning systems.
  • Build pipelines for storing and serving foundational models.
  • Mentor team members on data lakes, data normalization, dimensionality reduction, visualization, and statistical models.
  • Ensure model training is security- and compliance-aware.
  • Collaborate across teams to align foundational-model knowledge with the company’s AI strategy.

Requirements

  • 5+ years of demonstrated data science experience building large-scale foundational models for eCommerce scenarios.
  • Expertise in large language model post-training and deployment, with deep understanding of AI, LLM, AIGC, and ML architectures.
  • Strong statistical and mathematical background for defining metrics, learning functions, and analyzing results.
  • Significant experience with SQL, Python, PySpark, Scala, and R.
  • Proficiency with PyTorch, TensorFlow, Spark, and BigQuery.
  • Proficiency with Cursor, Windsurf, Claude Code, or Codex for AI-assisted coding.
  • Experience creating complex data visualization tools, frameworks, and techniques and applying dimensional reduction to big data.
  • Experience with cloud analytical stacks, including data lakes, warehouses, and ETL pipelines.
  • Experience with inference platforms in AWS, Azure, and other open-source platforms.
  • Strong written and verbal communication, teamwork, flexibility, customer focus, and passion for large language models, NLP, and machine learning at scale.
  • B.S. or M.S. in computer science, mathematics, or a related field.

Tech Stack

Apache SparkAWSAzureGoogle BigQueryPythonPyTorchRScalaSQLTensorFlow

Categories

AI ResearchML Engineering
Coupang

About Coupang

5,001-10,000 employees

Coupang builds and operates a South Korea–focused e-commerce marketplace with an end-to-end logistics network (Rocket Delivery), plus food delivery, video streaming, and fintech under brands such as Coupang, Eats, and Play. Revenue comes from first-party retail, third-party marketplace services, advertising, and memberships (Rocket WOW). Founded in 2010, the company is headquartered in Seattle and is publicly listed on the NYSE (CPNG).

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