Join Coupang Media Group (CMG) to define and build next-generation machine learning systems and AI-native advertising capabilities for Offsite Ads.

Design and build machine learning models and systems to improve ad targeting, ranking, bidding, and campaign performance for Coupang Offsite Ads.
Develop large-scale prediction and optimization models, including CTR, CVR, GMV, and bidding optimization.
Apply modern AI approaches (including LLMs, embeddings, agentic AI, and deep learning) to solve complex advertising problems.
Build scalable ML infrastructure and production systems that support rapid experimentation and reliable model deployment.
Define success metrics, evaluate business impact, and improve model performance using data-driven experimentation.
Partner with Product, Engineering, Data Science, and business teams to address high-impact customer and advertiser problems.
Lead projects from concept to production with strong ownership and accountability for business outcomes.
Mentor engineers and help build a culture of technical excellence, innovation, and continuous learning.

Bachelor’s degree in Computer Science, Machine Learning, Statistics, Mathematics, Electrical Engineering, or a related quantitative field.
6+ years of industry experience developing and deploying machine learning solutions in production environments.
Strong foundation in machine learning, deep learning, statistical modeling, optimization, and large-scale data systems.
Hands-on experience building production-grade ML systems using Python and/or Java.
Strong experience with PyTorch and modern deep learning architectures for prediction, ranking, recommendation, retrieval, or optimization problems.
Ability to solve complex and ambiguous business problems through data-driven analysis and machine learning innovation.
Track record of owning large technical initiatives and delivering measurable business impact.

Master’s degree or PhD in Computer Science, Machine Learning, Statistics, Mathematics, or a related field.
Experience in digital advertising, recommendation systems, ranking systems, marketplace optimization, or large-scale machine learning.
Experience with modern AI technologies including LLMs, generative AI, embedding models, retrieval systems, or agentic AI.
Expertise in PyTorch and building large-scale production machine learning systems.
Experience with distributed training, model serving, and ML platforms in cloud environments.
Familiarity with ML tools and frameworks such as PyTorch, XGBoost, LightGBM, Scikit-learn, MLflow, Kubeflow, Spark, and Airflow.
Strong communication and collaboration skills, with the ability to influence stakeholders across multiple functions.
Comfort working in a fast-paced, high-growth environment with ownership and customer focus.

Base pay range for Staff position: $164,000/year to $282,000/year.
Annual bonus: 0-20% of base salary.
Medical/Dental/Vision/Life, AD&D insurance.
Flexible Spending Accounts (FSA) and Health Savings Account (HSA).
Long-term/Short-term Disability.
Employee Assistance Program (EAP) program.
401K Plan with Company Match.
Paid Time Off (PTO): 18-21 days per year based on tenure.
12 Public Holidays.
6 weeks Paid Parental leave.
Pre-tax commuter benefits.
MTV - [Free] Electric Car Charging Station.
Other Compensation may include bonuses, equity, or other forms of compensation in addition to base salary range.

Application Review → Phone Interview → Onsite (or Virtual Onsite) Interview → Offer
Exact process may vary and may change due to scheduling or other circumstances.
Interview schedules and results are communicated via the email provided at application stage.

This posting may be closed prior to the stated application end date if all openings are filled.
Coupang may rescind an offer if a candidate submitted false information as part of the application process.
Certain candidates eligible for employment protection (for example, veterans’ benefits recipients and disabled individuals) may receive preferential treatment according to applicable laws.
Personal information is collected and managed per Coupang’s Application Privacy Notice: https://www.coupang.jobs/privacy-policy/
Reasonable accommodation for disability during the recruiting process can be requested at [email protected].
Requisition ID: R0078849.

Staff Machine Learning Engineer

Job Description