Senior Machine Learning Engineer, Generative AI Search - job 1 of 2
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.
Role Overview
- Build end-end Search & Discovery systems and help design our latest Gen AI based search engine.
- Ability to drive key developments and overcome technical blockers
- Ensure solid ML design and operational excellence
- Be metrics driven and identify big opportunities
- Build strong collaborations with partner teams
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• Bachelor's degree in computer science, electrical engineering, mathematics, statistics orclosely related fields• 2 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 MLsystems
Preferred Qualifications
- Retrieval: Uses embedding-based retrieval (EBR) with Approximate Nearest Neighbor (ANN) search (e.g., FAISS, HNSW). Familiar with advanced techniques like contrastive learning or adaptive retrieval.
- Ranking: Know SOTA models like DCNv2, DeepFM, FFM and Generative Recommendation. Explores multi-objective loss functions (e.g., optimizing engagement, diversity, and revenue).
- Negative Sampling: Understands and applies standard in-batch and hard negatives to avoid overfitting to exposed distribution for retrieval and ranking.
- Model Evaluation: Discusses A/B testing, offline metrics (NDCG, MRR, precision@k), and online impact metrics (CTR, conversion rate).
- Cold Start & Exploration: Discusses meta-learning, few-shot learning, or reinforcement learning (multi-arm bandit and usage of randomization experiments).
- Scalability: Aware of serving constraints and may mention precomputing embeddings or caching strategies.
- Feature Engineering: Uses standard user, item, query-item engagement features, and contextual features.
Pay & Benefits
Our compensation reflects the cost of labor 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 $159,000/year in our lowest geographic market to $204,000/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 Benefits
- Medical/Dental/Vision/Life, AD&D insurance
- Flexible Spending Accounts (FSA) & Health Savings Account (HSA)
- Long-term/Short-term Disability
- Employee Assistance Program (EAP) program
- 401K Plan with Company Match
- 18-21 days of the Paid Time Off (PTO) a year based on the tenure
- 12 Public Holidays
- Paid Parental leave
- Pre-tax commuter benefits
- MTV - [Free] Electric Car Charging Station
General 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 also committed to providing a safe work environment for its employees and its consumers.
If you need assistance and/or a reasonable accommodation in the application of recruiting process due to a disability, please contact us at [email protected].
Requisition Job ID: R0059270
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Our mission is to create a world in which our customers ask "How did I ever live without Coupang?"
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