Staff ML Engineer: Real-Time Search & Discovery

Coupang, Inc.; Mountain View (CA); On-site; USD 152,000 - 277,000; Full time

Benefits offered by this job

Annual bonus

Health insurance

401K Plan with Company Match

Paid time off

Job summary

Coupang, Inc. in Mountain View, CA is seeking a senior ML systems engineer to design scalable offline and online platforms that support ranking and product discovery across the Coupang app and site.

You will handle billions of interaction records, serve complex ML models in real time, and collaborate with product, engineering, and data science teams to drive business impact. This role focuses on big data engineering, transformer models, and vector search in a rapid-growth, global environment.

Qualifications

• Bachelor's degree in computer science, electrical engineering, mathematics, statistics or closely related fields
• 4 years of professional experience in applied machine learning
• Experience in machine learning, deep learning, and statistical modeling
• Proficiency in Python and/or Java, with experience in building production grade ML systems

Responsibilities

• Design features and build large-scale machine learning models and systems to improve relevance, ranking, personalization and engagement
• Design and implement large-scale ML systems for search ranking, semantic retrieval, query understanding, and personalized product discovery using state-of-the-art techniques such as transformer-based models, contrastive learning, and vector search
• Drive innovation in search relevance and user intent modeling using large language models (LLMs), embedding-based retrieval, and multi-modal learning
• Build and optimize ML pipelines using tools such as Apache Spark, Airflow, Kubeflow, and MLflow, ensuring reproducibility, scalability, and operational excellence
• Define and track key performance metrics to evaluate model impact and identify highleverage opportunities for improvement
• Collaborate cross-functionally with product, engineering, and data science teams to align technical solutions with business goals and customer experience
• Mentor and grow engineering talent, fostering a culture of technical excellence, experimentation and continuous learning

Skills

Machine learning

Python

Java

Production ML

Education

Bachelor's degree

Tools

Apache Spark

Airflow

Kubeflow

MLflow

Job description

Coupang, Inc. in Mountain View, CA is seeking a senior ML systems engineer to design scalable offline and online platforms that support ranking and product discovery across the Coupang app and site.

You will handle billions of interaction records, serve complex ML models in real time, and collaborate with product, engineering, and data science teams to drive business impact. This role focuses on big data engineering, transformer models, and vector search in a rapid-growth, global environment.