Staff Machine Learning Engineer

We exist to wow our customers. We know we’re doing the right thing when we hear our customers say, "How did we 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 at 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.Role OverviewAs our Staff Machine Learning Engineer for Coupang Ads Learning (Ads Tech), you will be responsible for developing, designing machine learning models, optimization algorithms and new product features for our advertising platform.The Coupang Ads Learning (Ads Tech) is responsible for providing vendors that sell their products on Coupang with a host of marketing products and services. Our group is responsible for advertising brands and products inside our e-commerce website.This is an opportunity to be part of building up a new development organization with strong revenue potential inside a successful company. We’re building full-stack engineering teams to handle large scale advertising problems, including real-time behavioral targeting, auctioning and bidding systems and search-based advertising.In this role you will be responsible for innovating and building our new ad quality stack for our ads platform and eventually extend it into a full ad exchange, DSP, and SSP.What You Will DoDesign and implement large-scale ML systems for personalized recommendation using state-of-the-art techniques such as transformer-based models, contrastive learning and vector searchDefine and track key performance metrics to evaluate model impact and identify high leverage opportunities for improvementCollaborate cross-functionally with product, engineering and data science teams to align technical solutions with business goals and customer experienceBasic QualificationsBachelor's degree in computer science, electrical engineering, mathematics, statistics or closely related fields4 years of professional experience in applied machine learningExperience in machine learning, deep learning, and statistical modelingProficiency in Python and/or Java, with experience in building production grade ML SystemsPreferred QualificationsMaster’s or PhD in relevant technical fieldsExperience with search systems, information retrieval or recommendation enginesExperience with LLMs, embeddings, and vector search technologiesExperience with cloud platforms such as AWS, Google Cloud Platform including services like Vertex AI, BigQuery or SageMakerExperience working in startup or high-growth environmentsProven ability to lead-cross-functional teams and deliver results in a multicultural, global organizationHands-on experience with modern ML frameworks such as TensorFlow, PyTorch, Scikitlearn, Keras, XGBoost, LightGMB, and H2o.aiExperience with ML lifecycle tools such as MLflow, Kubeflow, Weights & Biases, or Amazon SageMakerExcellent communication skills with the ability to explain complex technical concepts to both technical and non-technical stakeholdersPay & BenefitsOur compensation reflects the cost of living across several US geographic markets. At Coupang, your base pay is one part of your total compensation. The base pay for this position ranges from $138,000/year in our lowest geographic market to $297,000/year in our highest geographic market.Pay is based on several factors including market location and may vary depending on job-related knowledge, skills, and experience.General Description of All BenefitsMedical/Dental/Vision/Life, AD&D insuranceFlexible Spending Accounts (FSA) & Health Savings Account (HSA)Long-term/Short-term DisabilityEmployee Assistance Program (EAP) program401K Plan with Company Match18-21 days of the Paid Time Off (PTO) a year based on the tenure12 Public HolidaysPaid Parental leavePre-tax commuter benefitsMTV - [Free] Electric Car Charging StationGeneral Description of Other Compensation"Other Compensation" includes, but is not limited to, bonuses, equity, or other forms of compensation that would be offered to the hired applicant in addition to their established salary range or wage scale.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.Coupang is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, or gender (including pregnancy, gender identity, gender expression, sexual orientation, transgender status), national origin, age, disability, medical condition, HIV/AIDS or Hepatitis C status, marital status, military or veteran status, use of a trained dog guide or service animal, political activities, or affiliations, citizenship, or any other characteristic or class protected by the laws or regulations in the locations where we operate. If you need assistance and/or reasonable accommodation in the recruiting process due to a disability, please contact us at usrecruiting@coupang.com.   Job Requisition ID: R0063970