CareerPlan

[Coupang Ads] Senior Back-end Engineer (ACI Intelligence)

SeoulFull-time2026-10-14 → 2026-11-12

Core

Designing and building scalable, high-performance backend services for Coupang's advertising platform to support advertisers and sellers.

Role type

Senior IC backend engineer (advertising platform)

Builds

Microservices, APIs, and infrastructure for the Coupang Ads platform

Domain

E-commerce advertising

Deliverable

production ML models | product features

Required skills

Distributed systems, microservices architecture, API design (RESTful, GraphQL, gRPC), database systems (SQL, NoSQL), algorithmic problem solving, system debugging, large-scale operations

Preferred skills

Advertising and e-commerce domain experience, big data and/or machine learning, cloud platforms (AWS, Azure, GCP), containerization and orchestration (Docker, Kubernetes), team leadership, agile development, Spring, Java, Kotlin, Node.js, Kafka, Redis, Hive, Hadoop, Spark, ElasticSearch

Technologies

Java, Kotlin, Node.js, Spring, Kafka, Redis, Docker, Kubernetes, SQL, NoSQL, GraphQL, gRPC, RESTful APIs

Responsibilities

Design and develop scalable microservices for ad campaign management and reporting; implement secure APIs for platform integration; troubleshoot complex system issues to improve scalability and reliability; collaborate with cross-functional teams to deliver technical solutions; define requirements and processes for development and testing projects

Seniority

Senior, hands-on IC