Staff ML Engineer, Personalization & Search

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

Benefits offered by this job

Annual bonus 0-20% of base salary

Medical/Dental/Vision/Life insurance

FSA & HSA

Disability insurance

EAP program

401K with company match

PTO 18-21 days/year

Public holidays

Parental leave 6 weeks

Pre-tax commuter benefits

Electric car charging station

Job summary

Coupang is hiring for a Staff-level ML Engineer to design and deploy large-scale ML systems that power search, ranking, and recommendations. You will process billions of records, build scalable pipelines, and serve real-time models to millions of customers.

You will work with data scientists, engineers, and product teams to translate business goals into robust solutions, mentoring junior engineers and driving technical excellence in a fast-paced, 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 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

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

4+ years applied ML

ML & statistical modeling

Python or Java production ML

Education

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

Tools

TensorFlow

PyTorch

Scikit-learn

Keras

XGBoost

LightGBM

Job description

Coupang is hiring for a Staff-level ML Engineer to design and deploy large-scale ML systems that power search, ranking, and recommendations. You will process billions of records, build scalable pipelines, and serve real-time models to millions of customers.

You will work with data scientists, engineers, and product teams to translate business goals into robust solutions, mentoring junior engineers and driving technical excellence in a fast-paced, global environment.