Coupang

Senior Staff Back-end Engineer (eCommerce Engineering)

Coupang
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2 months ago
Seoul, Korea, SouthStaff+
H1B sponsor

Responsibilities

  • Define and champion a 12–18 month platform strategy, author and approve RFCs, and align cross-functional teams.
  • Provide architectural leadership for privacy-compliant, multi-region, and multi-tenant environments while establishing API governance and access-control standards.
  • Oversee complex system designs involving backward compatibility, phased migrations, data integrity, eventual consistency, and caching optimization.
  • Set and uphold SLOs and error budgets while leading capacity planning, performance optimization, incident management, root-cause analysis, and postmortems.
  • Drive security, privacy, regulatory compliance, cost optimization, and operational standards.
  • Contribute hands-on through high-impact code reviews and performance optimizations.
  • Partner with PMs, TPMs, and teams across Search, Data, Checkout, and other organizations to deliver reusable platform components and standards.
  • Mentor Senior and Staff engineers, lead design reviews, and raise engineering quality and technical 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.
  • 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.
  • Preferred: experience designing and operating AuthN and AuthZ infrastructure and services, including access control, monitoring, detection, and response.
  • Preferred: experience with large-scale distributed systems handling global multi-region traffic.
  • Preferred: hands-on experience with data pipelines and event processing using Kafka, Spark, Cassandra, and Airflow.
  • Preferred: experience building observability frameworks with OpenTelemetry, Prometheus, and Grafana.
  • Preferred: expertise in JVM performance tuning, cache and storage design, API schema versioning, and testing.
  • Preferred: experience designing platforms, frameworks, or SDKs adopted across multiple product teams.

Tech Stack

Apache AirflowApache CassandraApache KafkaApache SparkAWSGrafanaJavaKotlinPrometheus

Categories

Coupang

About Coupang

10,000+ employees

Coupang is a technology and Fortune 150 company listed on the New York Stock Exchange (NYSE: CPNG) that provides retail, restaurant delivery, video streaming, and fintech services to customers around the world under brands that include Coupang, Eats, Play, Rocket Now, and Farfetch.

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