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Senior, Back-end Engineer (Advertiser Platform)

Seoul💼 Full-time🗓 2026-08-28 → 2026-09-26

Core

Designing and developing new features for Coupang's advertiser platform to support self-service ad operations for sellers and suppliers.

Role type

Senior back-end engineer (advertising platform)

Builds

High-performance, scalable microservices and APIs for ad campaign management and reporting

Domain

E-commerce advertising technology

Deliverable

production ML models | product features

Required skills

Distributed systems, microservices architecture, RESTful/GraphQL/gRPC API design, SQL/NoSQL databases, fault tolerance, system debugging

Preferred skills

Ad/ecommerce domain experience, big data/ML, cloud platforms (AWS/Azure/GCP), containerization (Docker/Kubernetes), Spring/Java/Kotlin/Node.js/Kafka/Redis

Technologies

Java, Kotlin, Node.js, Kafka, Redis, Hive, Hadoop, Spark, ElasticSearch, Docker, Kubernetes, AWS, Azure, Google Cloud

Responsibilities

Translate business needs into technical solutions for ad campaign management and reporting; design and operate scalable microservices; implement secure APIs for platform integration; decompose complex problems into efficient solutions; proactively resolve root causes of system issues; investigate new technologies to improve platform value and efficiency; define requirements and processes for development and testing projects

Seniority

Senior, hands-on IC

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