Senior Ranking Engineer(Java)

Coupang is one of the largest and fastest growing e-commerce platforms on the planet. We are on a mission to revolutionize everyday lives for our customers, employees and partners. We solve problems no one has solved before to create a world where people ask, “How did we ever live without Coupang?”  

Coupang is a global company with offices in Beijing, Los Angeles, Seattle, Seoul, Shanghai, and Silicon Valley. 

Job Overview:

As a Ranking Engineer working on Search Quality, you have the opportunity to work with world-class Search Engineers who have been worked for Google, Amazon, Pinterest, etc. You will define and solve hard problems to improve search quality, increase GMV, conversion rate, as well as understand customer’s intention better. We are desired to provide customer a friction-less search engine and help customer to find useful products. Your ideas and experience would help us achieve the goal.

 Job Responsibilities:

  1. Everyday query debug to dive deep into search results and understand defects and problems, based on which design experiments to improve search quality.
  2. Develop on different java based ranking frameworks efficiently and fast iterate experiments, using statistical or machine learning methods.
  3. Collaborate with different organizations, including PO and KM, to deliver search products.

 Qualifications:

  1. Bachelor’s degree in Computer Science, Computer Engineering, or related majors
  2. 3+ years of coding experience with Java, C++
  3. 2+ years of solid work with data structures, fundamental algorithms and system design

 Preferred:

  1. Hands-on experience with Search Engine/Recommendation Systems
  2. Hands-on experience in statistical/machine learning modeling and implementation
  3. Experience on big data platform and parallel computation, like Hadoop, Spark
  4. Ability to analyze, simplify and solve problems
  5. Good communication and team play
  6. Master’s or PhD degree in Computer Science or related Engineering majors

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