Amazon Principal Applied Scientist Alexa Sensitive Content Intelligence 

United States, Washington, Bellevue 

99125712

Key job responsibilities
A day in the life
You will be working with a group of talented scientists on researching algorithm and running experiments to test scientific proposal/solutions to improve our sensitive contents detection and mitigation for worldwide coverage. This will involve collaboration with partner teams including engineering, PMs, data annotators, and other scientists to discuss data quality, policy, model development, and solution implementation. You will mentor other scientists, review and guide their work, help develop roadmaps for the team. You work closely with partner teams across Alexa to deliver platform features that require cross-team leadership.

· Master’s degree in Computer Science (Machine Learning, AI, Statistics, Mathematics, or equivalent)
· 6+ years of experience in building machine learning models for business application especially applying NLP or Computer Vision to solve complex problems
· Experience programming in Java, C++, Python or related language
· Algorithm and model development experience for large-scale applications
· Experience distilling informal customer requirements into problem definitions, dealing with ambiguity and competing objectives

· PhD in Computer Science (Machine Learning, AI, Statistics, Mathematics, or equivalent)
· 10+ years of practical experience applying ML to solve complex problems
· Extensive knowledge and practical experience in some of the following areas: machine learning, statistics, deep learning, NLP (Natural Language Processing), recommendation systems, dialogue systems or information retrieval; Computer Vision
· Peer reviewed scientific contributions in premier journals and conferences
· Experience with defining research and development practices in an applied environment
· Track record in technically leading, mentoring scientists
· Excellent written and verbal communication skills. Able to explain complex solutions in easy-to-understand terms.