Applied Scientist, Search Ranking

Amazons Search team creates ML algorithms that connect customers around the world with products that delight them. We harness machine learning at Amazons scale to make the customer experience easier and smoother. Our impact is large. For example if your innovations save even 1 minute per customer per year then for every 100 million customers you save approximately 190 years of human effort.

Key job responsibilities
As an Applied Scientist on the Search Ranking team you will build search ranking models that work for thousands of product types billions of queries and hundreds of millions of customers spread around the world. You will 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. Amazons Search ranking relies on efficient early stage ranking followed by power final stage ranking models. this role will focus on developing efficient models and exploration techniques to optimize the early stage ranking phase.

A day in the life
Our primary focus is improving search ranking systems. On a day-to-day this means building ML models analyzing data from your recent A/B tests and collaborating with partner teams on joint goals. You will also find yourself in meetings with business and tech leaders at Amazon communicating your next big initiative.

About the team
We are a team consisting of ML scientists and software engineers. Our interests span machine learning for better ranking reinforcement learning to bring the benefits of exploration to search ranking and infrastructure to make it all happen at scale and efficiently.

- PhD or Masters degree and 4 years of CS CE ML or related field experience
- Experience programming in Java C Python or related language
- Experience in any of the following areas: algorithms and data structures parsing numerical optimization data mining parallel and distributed computing high-performance computing

- Experience using Unix/Linux
- Experience in professional software development

Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status disability or other legally protected status.

Our inclusive culture empowers Amazonians to deliver the best results for our customers. If you have a disability and need a workplace accommodation or adjustment during the application and hiring process including support for the interview or onboarding process please visit for more information. If the country/region youre applying in isnt listed please contact your Recruiting Partner.

The base salary range for this position is listed below. Your Amazon package will include sign-on payments and restricted stock units (RSUs). Final compensation will be determined based on factors including experience qualifications and location. Amazon also offers comprehensive benefits including health insurance (medical dental vision prescription Basic Life & AD&D insurance and option for Supplemental life plans EAP Mental Health Support Medical Advice Line Flexible Spending Accounts Adoption and Surrogacy Reimbursement coverage) 401(k) matching paid time off and parental leave. Learn more about our benefits at WA Seattle - 142800.00 - 193200.00 USD annually