Staff, Machine Learning Engineer (Eats Search & Discovery) 

Team Overview 

Coupang Eats is a new service by Coupang where we deliver quality food and beverages from restaurants and cafes to your door. Within the Customer app, our goal is to help the customer find the best food that fit their needs. As part of Search & Discovery organization, we aim at achieving this goal through 

• infallible search experience that can retrieve and rank the most relevant stores for a user query 
• personalized restaurants discovery with our tailored category browsing and recommendation content 
• facilitate the customer search journey through spelling correction, autocomplete, suggested queries, etc. 

These search and discovery experiences are powered by a comprehensive ecosystem including state of the art ranking models, relevance models, scalable data processing systems, flexible online ranking framework, etc. 

About the Role 

As a Staff Machine Learning Engineering, you will work within a team of 8 engineers to strengthen and innovate our search and discovery experience for the Coupang Eats products. You will be responsible for the design, development and maintenance of the end-to-end Search ecosystem. This encompasses our online ranking system, multiple data pipeline that produces the candidates and features (offline and online) used across our different ranking logics, relevance and conversion modeling, etc. In a controlled environment, run experiments to validate and launch any features that would improve the customer experience. 

Key Responsibilities: 

• Own the Search service, the backbone of Coupang Eats to make sure we are wowing customers constantly. 
• Collaborate with the Silicon Valley eCommerce teams to share knowledge and continually incorporate latest state of the art technics 
• Mine vast amount of data to gain insights from customer behavior 
• Develop new Machine Learning models and features to create new recommendation algorithm or improve existing algorithms 
• Create data jobs to generate Machine Learning features; build and train new models; run experiments to validate and launch new models 
• Mentor and grow engineers on the team 

Qualifications: 

• Master degree in Computer Science, Mathematics or related science majors 
• 4+ years experience working with large-scale, complex datasets to extract robust features and create reliable machine learning models. 
• Track record of diving into data to discover hidden patterns and solving problems with data science 
• Fast paced self-learner with proven record of launching successful features and improving business metrics 
• Strong communication skills. 

Preferred Qualifications: 

• Professional Korean proficiency 
• Ph.D. degree in Computer Science, Mathematics or related science majors 
• Experience with LLMs or recent NLP models 
• Experience as a ranking engineering in a fast moving environment. 
• Industrial experience working with online serving system working at scale 
• Write robust and efficient code using Java with unit and integration tests 
• Excellent communicator with great listening skills, growth mindset and can-do attitude 

Recruitment Process   

• Application Review - Phone Interview - Onsite (or Virtual Onsite) Interview – Offer   
• The exact nature of the recruitment process may vary according to the specific job and may be changed due to scheduling or other circumstances.   
• Interview schedules and the results will be informed to the applicant via the e-mail address submitted at the application stage.   

Details to Consider   

• This job posting may be closed prior to the stated end date for application if all openings are filled.      
• Coupang has the right to rescind an offer of employment if a candidate is found to have submitted false information as part of the application process.      

• Coupang does not discriminate against disabled applicants or those with veteran status. We are proud to offer equal opportunities for all applicants.   
• Job titles and responsibilities may be subject to change depending on the candidate’s overall experience, etc. This will be communicated to the candidate at the appropriate time before the offer.  

Privacy Notice   

• Your personal information will be collected and managed by Coupang as stated in the Application Privacy Notice located below.   

https://www.coupang.jobs/en/privacy-policy/ 

Document Return Policy. This notification is given pursuant to Article 11 (6) of the Fair Hiring Procedure Act.    

A job applicant, who has applied but not been finally selected for a position at Coupang (the “Company”), may request the Company to return his/her hiring documents submitted pursuant to the Fair Hiring Procedure Act.  However, this will not apply where the hiring documents were submitted via the website of the Company or e-mail, or where the job applicant submitted those documents voluntarily without a request from the Company.  In addition, if the hiring documents were destroyed due to a natural disaster or any other reasons not attributable to the Company, such documents will be deemed to have been returned to the job applicant.   

A job applicant who wishes to request the return of his/her hiring documents pursuant to the main sentence of paragraph 2 above should fill out a “Request for Return of Hiring Documents” [Annex Form No. 3 in the Enforcement Rule of the Fair Hiring Procedure Act] and submit the request to the Company (Coupang Recruiting Team, Tower 730, 570 Songpa-daero, Songpa-gu, Seoul). In such case, within fourteen (14) days from the date of identifying the receipt of the request, the Company will send the hiring documents to the job applicant’s designated address via registered mail.  Please be informed that the job applicant is required to pay the postage on the registered mail.   

In preparation for a job applicant’s request for the return of hiring documents pursuant to the main sentence of paragraph 2 above, the Company shall retain the original hiring documents submitted by the job applicant for 180 days from the completion of the recruiting process.  If no request is made until the end of this period, all of his/her hiring documents will be destroyed immediately in accordance with the Personal Information Protection Act.  

Equal Opportunities for All 

Coupang is an equal opportunity employer. Our unprecedented success could not be possible without the valuable inputs of our globally diverse team.