I've joined Coupang about 5 months ago as a recommender system software engineer. Here I've wrote down several inspiring points of working in Coupang before I lost my fresh view and feedlings on it.

General Organizational cultures

User Problem-driven

Experimentation-driven

Own problem, not domain

Self AAR

Modeling, Pipeline, Serving, Operation

Pipeline

Serving

Data-Intensive application, need detailed debugging, no sensitive info,

Maintaining Recommendation Model Serving System Running 3 exps Interface Cleanup

Operation

Oncall

Migration Spark, Single TG, Jenkins to Airflow, Front API proxy deprecation