Machine Learning Engineer
Job Title: Senior Machine Learning EngineerLocation: United States - remoteVisa: US Citizens or Green Card HoldersFluency in Chinese/Mandarin is required, so only reach out exclusively to candidates of Chinese ethnic background.What you will ownBuild recommendation and search across feed, discovery, search, and content continuation.Own retrieval/ranking: candidate generation, embeddings, two-tower models, features, and serving quality.Design, launch, and analyze recommendation/search experiments.Requirements5+ years industry experience building production ML systems with senior ownership.Bachelor's degree from a recognized university in China is requiredHands-on recommendation, search, ranking, ads ranking, feed ranking, or content discovery systems.Consumer apps, entertainment, social, gaming, creator, or engagement-driven products.Two-tower models, embedding retrieval, candidate generation, ranking, and online/offline evaluation.Hard filters5+ years industry experience building production ML systems with senior ownership.Hands-on recommendation, search, ranking, ads ranking, feed ranking, or content discovery systems.Consumer apps, entertainment, social, gaming, creator, or engagement-driven products.Two-tower models, embedding retrieval, candidate generation, ranking, and online/offline evaluation.Strong fitBuild recommendation and search across feed, discovery, search, and content continuation.Own retrieval/ranking: candidate generation, embeddings, two-tower models, features, and serving quality.Background in the entertainment or social media industry (e.g., TikTok, Pinterest, Instagram).Design, launch, and analyze recommendation/search experiments.Bonus:Bonus signal: 5+ years production MLBonus signal: recommendation systemsBonus signal: search rankingBonus signal: embedding retrievalAnti-signalsCannot show core Senior Machine Learning Engineer, Recommendation experienceNot comfortable with the listed work modeLow ownership, coordination-only, or no shipped examplesThis is a remote position.