Staff ML Engineer — Real-Time Personalization & Recommendations

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

Benefits offered by this job

PTO 18-21 days

12 public holidays

6 weeks parental leave

MTV - Free electric car charging

Job summary

Coupang in Mountain View, CA is seeking a Senior ML Engineer to build scalable offline and online ML platforms for ranking and discovery. You will handle billions of records and petabytes of logs, turning them into consumable data objects for engineers and scientists.

You will deploy real-time models to improve search and product recommendations, work with cross-functional teams, and mentor engineers while pushing for technical excellence in a fast-paced, high-growth 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 ad targeting, relevance, ranking, 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 high-leverage 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

Python

Java

ML Systems

Production ML

Education

Bachelor's degree in CS/EE/math

Tools

Apache Spark

Airflow

Kubeflow

MLflow

Job description

Coupang in Mountain View, CA is seeking a Senior ML Engineer to build scalable offline and online ML platforms for ranking and discovery. You will handle billions of records and petabytes of logs, turning them into consumable data objects for engineers and scientists.

You will deploy real-time models to improve search and product recommendations, work with cross-functional teams, and mentor engineers while pushing for technical excellence in a fast-paced, high-growth environment.