CareerPlan

Staff, Back-end Engineer (Advertiser Platform)

SeoulFull-time2026-10-31 → 2026-11-10

Core

Designing and building scalable, high-performance backend services and APIs for Coupang's advertiser platform to enable self-service ad operations for sellers and suppliers.

Role type

Staff, Back-end Engineer (Advertiser Platform)

Builds

Microservices, APIs, and infrastructure for the Coupang Ads platform

Domain

E-commerce advertising technology

Required skills

Distributed systems, Microservices architecture, API design (RESTful, GraphQL, gRPC), Database systems (SQL, NoSQL), High availability systems, System design, Algorithmic problem solving, Mentoring

Preferred skills

Ad tech 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

Responsibilities

Design and develop scalable microservices and APIs for ad campaign management and reporting; Collaborate with cross-functional teams to deliver technical solutions; Implement secure integrations with various platform components; Decompose complex problems into efficient solutions; Proactively resolve root causes of system issues; Research and introduce new technologies to improve platform value; Define processes for development, improvement, and testing projects; Conduct code reviews and mentor junior team members

Seniority

Staff, hands-on IC with significant mentorship responsibilities