Staff ML Engineer — Large-Scale Search & Personalization

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

Benefits offered by this job

Annual bonus 0-20%

Medical/Dental/Vision/Life

AD&D insurance

FSA/HSA

Disability insurance

EAP program

401K with company match

PTO 18-21 days

Job summary

Coupang is seeking a Staff Machine Learning Engineer to design features and build large-scale ML models that improve search relevance, ranking, and personalized product discovery. You will handle billions of records, deploy real-time models, and work with state-of-the-art techniques to push the boundaries of the customer experience.

You will collaborate with product, engineering, and data science teams, mentor engineers, and drive initiatives across ranking, retrieval and multimodal learning in

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 modelling
• 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 modelling using large language models (LLMs), embedding-based retrieval, and multi-modal learning
• Build and optimise 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

Python

Java

Machine Learning

Deep Learning

Production ML Systems

Education

Bachelor's degree in CS/EE/Math/Stats

Tools

TensorFlow

PyTorch

Scikit-learn

Keras

XGBoost

H2O.ai

Job description

Coupang is seeking a Staff Machine Learning Engineer to design features and build large-scale ML models that improve search relevance, ranking, and personalized product discovery. You will handle billions of records, deploy real-time models, and work with state-of-the-art techniques to push the boundaries of the customer experience.

You will collaborate with product, engineering, and data science teams, mentor engineers, and drive initiatives across ranking, retrieval and multimodal learning in