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Coupang Fulfillment Services Logo

Staff Backend Engineer

Coupang Fulfillment Services

$138,000 - $297,000
Nov 6, 2025
Mountain View, CA, US
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Coupang is looking to evolve its Search & Discovery Customer Experience (CX) platform and explore rebuilding the search and discovery experience with advanced AI technology, specifically Large Language Models (LLMs), to help users find and discover products more easily.

Requirements

  • 4 years of relevant industry experience with distributed systems, system programming and backend development
  • 4 years of solid work with fundamental algorithms, system design, and large distributed systems.
  • Experience of LLM application or ML model serving
  • Experience in building and owning critical user-facing API platform and corresponding backend systems, and solving complex design, scaling, latency, or performance problems in high-volume low-latency distributed systems

Responsibilities

  • Analyze and understand the root causes the bottle necks of the current system architecture of search experience
  • Propose solutions which address these bottlenecks and leverage the state-of-the-art system technologies
  • Build brand new user search experience product for Coupang with AI, especially LLM
  • Knit across teams by collaborating with Product managers and designers and other functions

Other

  • Strong passion for building products
  • Strong ownership, having experience of working in early startups is a plus
  • Embrace messiness, wants to be challenged with complex issues Scrappy and willing to take risks
  • Big bonus if you have React Web development previously
  • Strong communication skills and great product sense