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Senior Back End Engineer

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Senior Back End Engineer in Others new

  • Coupang
  • Full time
  • Email
  • Seoul, Korea

Responsibilities

  • Design a greenfield AWS data lake architecture, schemas, and data contracts with upstream HR and talent systems while supporting PIPA compliance.
  • Consolidate relocation, visa, vendor, and payroll source systems into unified ETL pipelines.
  • Build multi-country data routing engines for operations across Korea, Taiwan, Japan, and other markets.
  • Deliver operational BI, analytical reporting, and process automation for Global Mobility, payroll, and compliance teams.
  • Create data quality frameworks, validation rules, monitoring, and automated alerting for production pipelines.
  • Own technical execution, infrastructure provisioning, tool selection, architecture decision records, and operational runbooks.
  • Balance the Q3 go-live target with long-term architectural integrity and scalability.

Requirements

  • 3+ years of production software engineering experience with an SDE background and deep Python or Java expertise.
  • Strong AWS infrastructure and database design skills, including experience with EC2, RDS, S3, Lambda, and Glue.
  • At least 1 year of ETL/ELT pipeline design and orchestration experience using Airflow, Temporal, or similar tools.
  • Experience with dynamic schema design, data validation, pipeline observability, and end-to-end system architecture.
  • Ability to translate ambiguous business needs into concrete technical specifications for near-term and future scale.
  • Strong collaboration and documentation skills, including partnership with PMs and cross-functional teams.
  • Understanding of data governance, privacy standards, compliance requirements, and cross-functional stakeholder priorities.
  • Preferred qualifications include experience with sensitive PII, privacy or compliance standards, Coupang’s technology stack, multi-region deployments, greenfield-to-production delivery, and asynchronous or non-English technical collaboration.

Benefits

  • Full-time regular position with a 12-week probation period, which may be skipped, shortened, or extended according to business needs.
  • The recruitment process includes application review, phone interview, and onsite or virtual onsite interview, with possible variation by role or circumstance.

Coupang

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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