Coupang

Senior Staff Back-end Engineer (eCommerce Engineering)

Coupang
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21 days ago
Seoul, Korea, SouthStaff+

Responsibilities

  • Define and champion a 12–18 month platform technology strategy and roadmap.
  • Author and approve RFCs while aligning cross-functional teams around shared technical objectives.
  • Design privacy-compliant architectures for multi-region and multi-tenant environments.
  • Establish API governance standards and control access, monitoring, detection, and response.
  • Lead complex system design involving backward compatibility, phased migrations, data integrity, eventual consistency, caching, and global scale.
  • Set SLOs and error budgets and lead capacity planning, performance optimization, incident management, root-cause analysis, and postmortems.
  • Drive privacy, regulatory compliance, cost optimization, and operational standards.
  • Contribute through high-impact code reviews and performance optimizations.
  • Partner with PMs, TPMs, and Search, Data, Checkout, and other teams to deliver reusable platform components and standards.
  • Mentor Senior and Staff engineers, lead design reviews, and raise engineering quality standards.

Requirements

  • 10+ years of professional backend development experience, excluding internships.
  • 7+ years of Java, Kotlin, or Spring-based service development experience and 3+ years of architecture leadership.
  • Experience designing and operating web-scale microservices with hands-on AWS and Kubernetes experience.
  • Deep expertise diagnosing mission-critical system failures, identifying root causes, and implementing preventive measures.
  • Strong communication and leadership skills for aligning stakeholders and driving complex technical decisions across organizations.
  • Experience designing and operating AuthN and AuthZ infrastructure and services, including access control, monitoring, detection, and response.
  • Experience with large-scale distributed systems handling global multi-region traffic.
  • Hands-on experience with data pipelines and event processing using Kafka, Spark, Cassandra, and Airflow.
  • Experience building observability frameworks using tools such as OpenTelemetry, Prometheus, and Grafana.
  • Expertise in JVM performance tuning, large-scale cache and storage design, API schema versioning, and testing.
  • Experience designing platforms, frameworks, or SDKs adopted across multiple product teams.

Tech Stack

Apache AirflowApache CassandraApache KafkaApache SparkAWSGrafanaJavaKotlinKubernetesPrometheus

Categories

Coupang

About Coupang

5,001-10,000 employees

Coupang builds and operates a South Korea–focused e-commerce marketplace with an end-to-end logistics network (Rocket Delivery), plus food delivery, video streaming, and fintech under brands such as Coupang, Eats, and Play. Revenue comes from first-party retail, third-party marketplace services, advertising, and memberships (Rocket WOW). Founded in 2010, the company is headquartered in Seattle and is publicly listed on the NYSE (CPNG).

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