Google is seeking a Software Engineer III specializing in AI/ML for the YouTube Ads team. This role combines software engineering with machine learning expertise to build and optimize advertising systems at massive scale. The position involves working with billions of YouTube queries, implementing state-of-the-art machine learning techniques, and developing sophisticated user modeling and ad features. The ideal candidate will have strong programming skills in Python and C++, along with deep knowledge of machine learning infrastructure and algorithms. This role offers the opportunity to work on cutting-edge AI technology while directly impacting Google's advertising business. The position includes competitive compensation ($141,000-$202,000) plus benefits and equity, and is based in Mountain View, CA. As part of Google's engineering team, you'll collaborate with experts in the field and have access to advanced computing resources like Tensor Processing Units. This role represents an excellent opportunity for those interested in applying machine learning to real-world problems at scale while working for one of the world's leading technology companies.