Coupang

Staff Machine Learning Engineer - Search Ranking

Coupang
Apply
12 hours ago
Mountain View, CA, USAStaff+
H1B sponsor

Base Salary

$152k - $277k/yr

Responsibilities

  • Design features and build large-scale machine learning models and systems for relevance, ranking, personalization, and engagement.
  • Implement ML systems for search ranking, semantic retrieval, query understanding, and personalized product discovery.
  • Apply transformer-based models, contrastive learning, vector search, LLMs, embedding-based retrieval, and multimodal learning to improve search and discovery.
  • Build and optimize scalable, reproducible ML pipelines and real-time model-serving systems.
  • Define and track performance metrics to evaluate model impact and identify improvement opportunities.
  • Collaborate with product, engineering, and data science teams on technical solutions and business goals.
  • Mentor and grow engineering talent and promote technical excellence and continuous learning.

Requirements

  • Bachelor’s degree in computer science, electrical engineering, mathematics, statistics, or a closely related field.
  • At least 4 years of professional experience in applied machine learning.
  • Experience with machine learning, deep learning, and statistical modeling.
  • Proficiency in Python and/or Java and experience building production-grade ML systems.
  • Preferred: master’s or PhD in a relevant technical field.
  • Preferred: experience with search systems, information retrieval, recommendation engines, LLMs, embeddings, vector search, cloud platforms, and modern ML frameworks.
  • Preferred: experience with ML lifecycle tools including MLflow, Kubeflow, Weights & Biases, or Amazon SageMaker.
  • Preferred: experience leading cross-functional teams in startup or high-growth environments and communicating complex technical concepts to technical and non-technical stakeholders.

Benefits

  • Base pay ranges from $152K/year to $277K/year depending on geographic market, knowledge, skills, and experience.
  • Annual bonus of 0–20% of base salary.
  • Medical, dental, vision, life, AD&D, disability, FSA, HSA, EAP, and 401(k) with company match benefits.
  • 18–21 days of paid time off annually based on tenure and 12 public holidays.
  • Six weeks of paid parental leave and pre-tax commuter benefits.
  • Free electric car charging station.

Tech Stack

Apache AirflowApache SparkAWSGoogle BigQueryGoogle Cloud PlatformH2O.aiJavaKerasLightGBMMLflowPythonPyTorchscikit-learnTensorFlowXGBoost

Categories

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).

Contact me