Staff, Ranking Engineer (Recommendations)

Key Skills

Analytical and Problem solving, Deep Learning, Design, Java Programming, Machine learning techniques

Job Description

As a Staff Ranking Engineer for Recommendations, you will be responsible for the design, development and maintenance of the end-to-end Recommendation 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, a serving system that produces content for most of Coupang app. You will need to collaborate closely with the Silicon Valley team that share ownership of the system. In a controlled environment, run experiments to validate and launch any features that would improve the customer experience.

Key Responsibilities:

• Own the Recommendation service, one of the most critical for Coupang to make sure we are wowing customers constantly.
• Collaborate tightly with the Silicon Valley team to co-build a world class recommendation system
• 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
• 5+ 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
• 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

Selection process and instructions

selection process

• Document screening > 1st interview > 2nd interview > Treatment consultation
• The selection process may operate differently for each job and may change depending on schedule and circumstances.
• The selection schedule and results will be individually notified to the email address registered in the application.

Note

• This announcement may close early when recruitment is complete.
• If there are false information in your application, your acceptance may be cancelled.
• Being a veteran or a disabled person does not put you at any disadvantage during the hiring process.
• The position and scope of work may be changed taking into account various circumstances, such as the candidate's overall career and experience. If such changes are necessary, they will be communicated to candidates in a timely manner prior to final notification of acceptance.

privacy policy

• Coupang Group collects and processes your personal information in accordance with the Job Applicant Personal Information Processing Policy (link below).
• https://www.coupang.jobs/kr/privacy-policy