Coupang

Staff Back-end Engineer [L6-1] (Business Support and Innovation)

Coupang
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4 hours ago
Shanghai, ChinaStaff+
H1B Sponsor

Responsibilities

  • Lead the architecture and core development of LLM- and multimodal-model-powered multi-agent systems.
  • Design and implement long-running hosted agents, sandbox execution environments, hierarchical context management, persistent storage, and Function Calling orchestration.
  • Deliver complex Agent and RAG systems end to end, from solution design through production deployment.
  • Translate research and advances in memory, long context, planning, and tool use into production engineering solutions.
  • Design highly concurrent, highly available backend and distributed systems for supply chain automation and inventory planning.
  • Build and operate AI agent platforms supporting conversational and Slack-based operational interfaces, ordering automation, and LLM-based reorder-quantity optimization.

Requirements

  • Experience architecting and developing complex multi-agent systems based on LLMs or multimodal models.
  • End-to-end production delivery experience with complex Agent or RAG systems.
  • Familiarity with memory, long context, planning, and tool-use technologies and the ability to apply research to engineering systems.
  • Proficiency with one or more AI development frameworks, including LangChain, LangGraph, Deerflow, Claude Code, or Hermes.
  • Strong Java or Python programming skills and experience designing and launching large-scale distributed systems.
  • Understanding of asynchronous programming, concurrency, idempotency, rate limiting, and other backend engineering fundamentals.
  • Strong software architecture and design-pattern knowledge, with the ability to read and understand open-source framework source code.
  • High standards for code quality and system maintainability.

Benefits

  • Recruitment includes application review, phone interview, and onsite or virtual onsite interview before an offer.
  • Interview schedules and results are communicated by email.
  • Applications may close early once openings are filled.
  • Eligible veterans, people with disabilities, and other employment-protected groups may receive preferential treatment as required by law.
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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