We exist to wow our customers. We know we’re doing the right thing when we hear our customers say, “How did I ever live without Coupang?” Born out of an obsession to make shopping, eating, and living easier than ever, we’re collectively disrupting the multi-billion-dollar e-commerce industry from the ground up. We are one of the fastest-growing e-commerce companies that established an unparalleled reputation for being a dominant and reliable force in South Korean commerce. 

We are proud to have the best of both worlds — a startup culture with the resources of a large global public company. This fuels us to continue our growth and launch new services at the speed we have been since our inception. We are all entrepreneurs surrounded by opportunities to drive new initiatives and innovations. At our core, we are bold and ambitious people that like to get our hands dirty and make a hands-on impact. At Coupang, you will see yourself, your colleagues, your team, and the company grow every day. 

Our mission to build the future of commerce is real. We push the boundaries of what’s possible to solve problems and break traditional tradeoffs. Join Coupang now to create an epic experience in this always-on, high-tech, and hyper-connected world. 

Who We Are
The Ads Ranking Machine Learning Engineering team is a globally distributed team responsible for developing scalable, high-performance AI/ML solutions that power Coupang’s advertising platform. Our mission is to maximize ad relevance and revenue by delivering the right ad to the right user at the right time, enhancing the shopping experience without compromising user engagement. We build state-of-the-art Deep Learning models for large-scale CTR/CVR prediction, list-wise ranking, and personalized ad recommendations. We own our services end-to-end and work closely with Product Management and Infra Engineering teams to transform massive amounts of e-commerce data into real-time business value.

What you will gain

• Model Optimization: Apply deep learning, learning-to-rank, recommendation algorithms, and advanced feature engineering to optimize ad ranking and retrieval models.
• Algorithmic Design: Understand business objectives and user behavior to design effective loss functions, evaluation metrics, and model architectures for CTR/CVR prediction.
• Production Implementation: Implement, test, and prototype machine learning solutions within our high-concurrency, low-latency production systems under the mentorship of senior engineers.
• Cross-Functional Collaboration: Collaborate with other Coupang tech and infrastructure teams to ensure models scale seamlessly and unlock new monetization opportunities.

Basic Qualifications 

• Currently pursuing a bachelor’s in computer science, Computer Engineering, or a related technical field  
• Experience with at least one programming language (e.g., Python, Java, or C++)  
• Foundation in data structures, algorithms, and software engineering principles  
• Familiarity with machine learning concepts  
• Ability to work in a collaborative, fast-paced environment 
• Preferred Qualifications 
• Experience with ML frameworks (e.g., TensorFlow, PyTorch, XGBoost) 
• Familiarity with big data tools (e.g., Spark, Hive, Hadoop) 
• Experience with SQL and relational databases 
• Exposure to distributed systems or cloud platforms (AWS, GCP, or Azure) 
• Prior internship or research experience in ML, data engineering, or systems 
• Strong problem-solving skills and demonstrated ownership 
• Eligibility & Program Details 
• Must be actively enrolled in an accredited university during the internship 
• Preferred academic level: Sophomore, Junior, Senior 
• Internship Term: Summer 2026 (10-week program) 

Pay & Benefits 

• Internships are full-time (40 hours per week) 
• Hourly Pay Range: $40 – $45 per hour; we do not anticipate overtime work, but if there is, any overtime hours would be paid in accordance with applicable law 
• Compensation is based on market location, skills, and experience  
• Mentorship, performance feedback, and final evaluation 

Coupang is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to actual or perceived race (including traits historically associated with race, including but not limited to hair texture and protective hair styles), color, religion, religious creed (including religious dress and grooming practices), sex or gender (including pregnancy, childbirth, breastfeeding, and medical conditions related to pregnancy, childbirth or breastfeeding), gender identity, gender expression, sexual orientation, ,ancestry, national origin (including language use restrictions), age (40 and over), physical or mental disability, medical condition, genetic information, HIV/AIDS or Hepatitis C status, family status (including but not limited to marital or domestic partnership status), military or veteran status, use of a trained dog guide or service animal, political activities or affiliations, ancestry, citizenship, family and medical leave status, status as a victim of any violent crime, or any other characteristic or class protected by the laws or regulations in the locations where we operate. 

Requisition # R0073831