Applied Scientist, Search Ranking

Amazon Amazon · Big Tech · Seattle, WA · Applied Science

Builds and improves ML models for Amazon's search ranking system, focusing on efficient early-stage ranking, personalization, and automatic optimization at Amazon's scale.

What you'd actually do

  1. build search ranking models that work for thousands of product types, billions of queries, and hundreds of millions of customers spread around the world.
  2. find the next set of big improvements to ranking, leverage large datasets to understand the complexities of customer behavior, and build ML models that work at Amazon scale.
  3. focuses on efficient models for early stage ranking phase, and techniques to personalize these models and optimize them automatically.
  4. building ML models, analyzing data from your recent A/B tests, and collaborating with partner teams on joint goals.
  5. presenting proposals to Amazon's business and tech leaders.

Skills

Required

  • 4+ years of applied research experience
  • 3+ years of building machine learning models for business application experience
  • PhD, or Master's degree and 6+ years of applied research experience
  • Experience programming in Java, C++, Python or related language
  • Experience with neural deep learning methods and machine learning

Nice to have

  • Experience with modeling tools such as R, scikit-learn, Spark MLLib, MxNet, Tensorflow, numpy, scipy etc.
  • Experience with large scale distributed systems such as Hadoop, Spark etc.

What the JD emphasized

  • build ML models
  • Amazon scale

Other signals

  • build search ranking models
  • ML models at Amazon scale
  • improve search ranking systems
  • build ML models
  • personalization
  • reinforcement learning