Senior Machine Learning Engineer

The Search Ads team constantly pushes the boundaries of general search engine monetization across multiple apps within our ecosystem, building a globally leading Search Ads monetization system. At the Search Ads team, you will have the chance to work on large-scale distributed storage and architecture, NLP, Rank, and IR related problems. You will be also deeply involved in the innovation and optimization of our Ad format, creative display, and the ROI of ads delivery. We are looking for candidates who brave difficulties, share a passion for tackling complexity and developing our Search Ads product from 0 to 1 with a world-class team of passionate engineers.

What You'll Do:

• Participate in the development of a large-scale Ads system
• Responsible for relevance model and strategy optimization, such as semantic matching models, active learning, text/photo/video multi-model, ranking strategy, etc
• Participate in the development and iteration of Ads algorithms by using Machine Learning
• Work on NLP (Natural Language Processing) capability improvement and query understanding, such as query classification, seq2seq, NER (Named Entity Recognition), knowledge graph, bidword optimization, etc
• Work on CTR/CVR model estimation accuracy, data analysis, modeling, feature engineering
• Research and develop Ads pacing algorithms, ads traffic control, etc
• Partner with product managers and product strategy & operation team to define product strategy and features

• BS degree in Computer Science, Computer Engineering or other relevant majors
• Experience with one or more general purpose programming languages including but not limited to: Go, C/C++, Python
• 5+ years of experience in and a good understanding of one of the following domains: Search, Ads, Recommendation, Monetization Products, Shopping Products.
• Experience with one or more of the following: Machine Learning, Deep Learning, NLP, ranking systems, recommendation systems
• Ability to think critically and formulate solutions to problems in a clear and concise way
• Solid communication and collaboration skills with the ability to work effectively with internal teams in a cross-cultural and cross-functional environment